Animal ART Source Register
Animal ART Source Register
Equine & Bovine Reproduction
The documented, quality-rated evidence base behind the Animal IVF Store Bovine and Equine Reproduction Technical References — covering artificial insemination (AI), embryo transfer (ET), in vitro fertilization (IVF), in vitro embryo production (IVP), and advanced reproductive techniques (OPU, ICSI, cryopreservation, cloning). Every entry below was individually verified against the publisher, registry, or issuing body on the compilation date. Nothing is cited from memory.
Contents
- Purpose & Method
- Quality Rating System
- Key Sources by Technique
- International Standards & Regulation
- Standards Bodies, Societies & Certification
- Bovine — Textbooks & Manuals
- Bovine — Key Peer-Reviewed Literature
- Equine — Textbooks & Manuals
- Equine — Key Peer-Reviewed Literature
- Journals & Proceedings Venues
- Extension & Consortium Protocols
- Commercial & Laboratory Protocol Sources
- Verification Notes & Residual Uncertainties
This register is the published evidence base of the Animal IVF Store technical references, built to the same standard as the IVF Store Clinical IVF Laboratory Procedure Manual: sources first, procedures second, so that every protocol statement in the references can be traced — by its S-number — to a named, rated authority on this page.
Each source was located and verified on 26 August 2026 by one of four verification methods, recorded per entry: Direct — the page or document itself was retrieved and its content confirmed; Registry — bibliographic details (authors, journal, volume, pages, DOI) confirmed against Crossref, Europe PMC, or WorldCat, the authoritative registries for published literature; Search-verified — existence and publisher confirmed via multiple independent records where the publisher blocks direct retrieval (common for Elsevier/Wiley journal homepages); Partial — a stated limitation remains, described in the entry's caveat. Chapter/article locators are given where directly verified (WOAH article numbers, ICAR Section 6, book chapters inspected); page-level locators are added only from direct inspection of the work. Anything that could not be verified was excluded or flagged — see §13 for the honest list of residual uncertainties.
TIER A Definitive
International standards, consensus bodies, landmark peer-reviewed work, or the recognized defining reference of its topic. Safe to cite as primary authority.
TIER B Strong
Authoritative textbooks, peer-reviewed reviews, and society standards with minor currency or scope limits noted in the entry.
TIER C Credible practical
Extension guides, practitioner proceedings, and commercial protocols. Real-world technique from credible operators — corroborate before citing as authority.
TIER D Supplementary
Background, historical, or instrumentation material. Use for context, never as sole support for a procedure.
Independently of tier, every entry carries a role: Evidence & standards (standards bodies, regulation, textbooks and peer-reviewed literature — the only entries the technical references cite as claim-level authority); Practical protocol (training manuals, extension sheets and proceedings how-tos — citable for technique when their tier permits); Discovery resource (journals, proceedings venues, portals and program hubs — places where evidence is found, never themselves evidence for a procedure); and Commercial instructions (supplier and operator materials — always identified as commercial and corroborated before use).
Where to start reading on each topic: the two or three sources this library treats as primary for each technique. Source numbers (S1–S94) refer to the entries below.
| Technique | Bovine — anchor sources | Equine — anchor sources |
|---|---|---|
| AI & semen handling | Hopper (S20) · CSS Min. Requirements (S11) · DCRC sheets (S82) · Penn State (S83) | Samper (S46) · McKinnon (S43) · Loomis & Graham (S66) · Morris & Allen (S62) |
| Embryo transfer | IETS Manual (S7) · Hopper (S20) · Bó & Mapletoft (S34) · Hansen 2020 (S37) | McCue & Squires (S47) · Dascanio & McCue (S44) · Stout 2006 (S57) |
| OPU | Ferré 2023 (S42) · Boni 2012 (S41) | Hinrichs 2018 (S56) · Stout 2020 (S58) · Galli 2014 (S63) |
| IVF / IVP | Ferré 2020 (S31) · Hansen 2023 (S38) · Gordon (S21) | Felix et al. 2022 (S55) · Hinrichs 2018 (S56) · Claes & Stout 2022 (S59) |
| ICSI | — (minor in cattle; Galli 2014, S63) | Hinrichs 2018 (S56) · Galli 2014 (S63) · Squires 1996 (S52) |
| Cryopreservation | Vajta 1998 (S29) · Sanches 2016 (S30) · IETS Manual (S7) | Choi & Hinrichs 2017 (S67) · Loomis & Graham (S66) |
| Sanitary / trade standards | WOAH Code Ch. 4.6–4.12 (S1–S2) · IETS Manual + HASAC (S7–S8) · EU 2020/686 (S4) · 9 CFR 98 (S5) | |
| Industry statistics | IETS Data Retrieval reports, Viana (S9) · AETE European statistics (S19) | |
WOAH Terrestrial Animal Health Code — semen chapters
WOAH (World Organisation for Animal Health), Terrestrial Animal Health Code, current online edition, updated 5 September 2025 (incorporating texts adopted at the 92nd General Session, May 2025, Resolution No. 25); archived edition of record: 32nd edition, 2024. Chapter 4.6 "Semen collection, processing and storage" (first adopted 1986) and Chapter 4.7 "Collection and processing of bovine, small ruminant and porcine semen".
WOAH is the WTO-recognized international standard-setting body for animal health; the Code governs trade certification for semen worldwide. woah.org access portal · Ch. 4.6 text
Chapter numbering shifted between editions — cite both the online-version date and the archived edition. The online Code is the current legal-trade text; the archived 32nd edition (2024) is the immutable citation of record. WOAH standards portal
WOAH Terrestrial Animal Health Code — embryo, oocyte & SCNT chapters
WOAH, Terrestrial Animal Health Code, current online edition, updated 5 September 2025 (92nd General Session, Resolution No. 25); archived edition of record: 32nd edition, 2024. Ch. 4.8 "Collection and processing of in vivo derived embryos from livestock and equids" (last update 2015); Ch. 4.9 "Collection and processing of oocytes and in vitro produced embryos from livestock and horses" (last update 2018); Ch. 4.10 "Collection and processing of micromanipulated oocytes or embryos from livestock and horses"; Ch. 4.12 "Somatic cell nuclear transfer in production livestock and horses" (last update 2017).
These chapters embed the IETS/HASAC disease-risk categorization and embryo washing/trypsin protocols — the legal-trade expression of the underlying IETS science. Ch. 4.8 text
Pre-2024 editions number these chapters differently; cite the online-version date alongside the archived edition. Note for equine use: Art. 4.8.7 states trypsin treatment is "not always beneficial and it should not be regarded as a general disinfectant" and "may also have adverse effects on embryo viability, for instance in the case of equine embryos where the embryonic capsule could be damaged by the enzyme" — bovine and equine sanitary assurances are not equivalent (reflected in the references’ §4).
Regulation (EU) 2016/429 — the EU Animal Health Law
Regulation (EU) 2016/429 of the European Parliament and of the Council of 9 March 2016 on transmissible animal diseases ("Animal Health Law"), OJ L 84, 31.3.2016; applicable from 21 April 2021.
The framework statute for all EU rules on semen, oocytes and embryos — the parent act every EU-facing customer operates under. EUR-Lex 32016R0429
Framework only — operative detail sits in the delegated acts (S4). Cite the consolidated version; amendments exist.
Commission Delegated Regulation (EU) 2020/686 — germinal product establishments
Commission Delegated Regulation (EU) 2020/686 of 17 December 2019 supplementing Regulation (EU) 2016/429 as regards approval of germinal product establishments and traceability and animal health requirements for movements of germinal products; applicable from 21 April 2021.
The operative EU standard for semen collection centres, embryo collection teams and embryo production teams — successor to Directives 88/407/EEC and 89/556/EEC. EUR-Lex 32020R0686
Use the EUR-Lex consolidated version for current text. Third-country imports are governed separately (Reg. (EU) 2020/692; Impl. Reg. (EU) 2021/403 certificates) — not verified in this pass.
9 CFR Part 98 — US import regulation for embryos and semen
9 CFR Part 98, "Importation of Certain Animal Embryos and Animal Semen" (Subparts A–C). Current eCFR text as amended through 3 June 2026.
The controlling US legal text for germplasm imports — permits, health certification, quarantine. eCFR Part 98
Covers imports only; exports follow the importing country's requirements (S6). eCFR is continuously amended — pin the retrieval date when citing.
USDA APHIS — Live Animal & Germplasm Exports (IRegs)
USDA APHIS, "Live Animal Exports" portal — International Regulations for Animal Exports (IRegs): country-by-country export requirements for live animals and germplasm (semen, embryos, oocytes), with endorsed health certificates. Continuously updated.
The certificates it hosts — which frequently reference CSS Minimum Requirements and AETA/IETS protocols — are the operative US export documents. aphis.usda.gov/live-animal-export
A living repository, not a single citable standard; country requirements change without notice. Tier C as a citation, operationally indispensable.
Manual of the International Embryo Transfer Society (IETS), 4th edition
Stringfellow DA, Givens MD (eds.), Manual of the International Embryo Transfer Society: A Procedural Guide and General Information for the Use of Embryo Transfer Technology, Emphasizing Sanitary Procedures, 4th edition. IETS, Champaign/Savoy, IL (2010 per library records).
The global standard for embryo classification codes (stage 1–9, quality 1–4), straw labeling, and the 10-wash/trypsin sanitary protocol referenced by the WOAH Code. iets.org/Publications/IETS-Manual
The 4th-edition year (2010) and editorship rest on WorldCat/secondary citations — iets.org confirms the edition but not the year. Recheck with IETS before print. Some content predates newer IVP-era practice.
IETS Health and Safety Advisory Committee (HASAC)
IETS HASAC — disease-risk categorization for embryo transmission and embryo biosecurity recommendations to WOAH; ongoing committee outputs.
The consensus scientific authority behind embryo sanitary standards — its categorization underpins WOAH Code Ch. 4.8. iets.org HASAC
Outputs are distributed across the IETS Manual, WOAH Code and journal papers rather than one standalone document — cite the specific vehicle.
IETS Data Retrieval Committee — annual world embryo industry statistics (Viana reports)
Viana JHM (chair, IETS Data Retrieval Committee), "2024 Statistics of embryo production and transfer in domestic farm animals," Embryo Technology Newsletter 43(4), IETS, 2025. Published annually.
The only global census of the embryo industry — universal citation for industry-scale claims. Verified 2024 headline data: 2,325,527 total bovine embryos, of which 2,029,007 IVP (+8.1% y/y) vs 296,520 in vivo derived (−20.1%); equine total 40,862. 2024 report PDF
Voluntary practitioner reporting; known under-reporting in some regions — echo the report's own caveats when quoting.
IETS embryo certification forms & freeze codes
IETS official forms: A. Certificate of Embryo Recovery; A1. Certificate of Embryo Recovery or Oocyte Aspiration and IVM/IVF; C. Certificate of Freezing; SCNT source certificates; straw coding instructions. Undated, current on iets.org.
Adopted by breed registries (e.g., Holstein USA) and used in pedigree and trade documentation. Example: form A1/C1
Forms are undated on their face — confirm currency with IETS before reproducing.
CSS Minimum Requirements for Disease Control of Semen (NAAB)
Certified Semen Services, Inc. (subsidiary of the National Association of Animal Breeders), CSS Minimum Requirements for Disease Control of Semen Produced for AI, 2026 version (English and Spanish).
The de facto US industry standard for AI-stud health programs; referenced in APHIS export certificates and foreign import protocols. naab-css.org/minimum-requirements
US industry standard, not a government regulation; updated periodically — cite the dated version used.
AETA Certification Program & Study Guide
American Embryo Transfer Association, Certification Program (est. 1985); AETA Certification Program Study Guide, rev. 08-2024. Annual convention (2026: Wisconsin, Sept 24–26, joint with CETA/ACTE).
USDA/APHIS recognizes AETA certification within protocols qualifying practitioners for export of US bovine embryos. aeta.org certification
Practitioner certification rather than a technical procedures manual — it defers to the IETS Manual and APHIS protocols for technique. No verified public proceedings series; cite the study guide and certification pages.
CETA/ACTE (Canada) Certification Program
Canadian Embryo Transfer Association / Association Canadienne de Transfert d'Embryons, Certification Program — written and practical examination; includes IVF-lab supervision stream.
CFIA requires CETA/ACTE certification within its approval process for embryo export collection and freezing — a government-recognized national standard. ceta.ca/certification
National scope; procedural detail defers to the IETS Manual and CFIA export protocols.
SFT Manual for Breeding Soundness Examination of Bulls, 2nd ed.
Koziol JH, Armstrong CL, Manual for Breeding Soundness Examination of Bulls, 2nd edition, Society for Theriogenology, 2018. 147 pp.
The SFT BSE thresholds (≥30% progressive motility, ≥70% normal morphology framework) are the US practitioner standard for bull evaluation. therio.org BSE Manual
Examination standard, not a semen-processing or trade standard; US-centric.
American College of Theriogenologists / SFT position statements
American College of Theriogenologists (AVMA-recognized specialty board) and Society for Theriogenology — joint position statements; ACT General Information Guide, rev. 08-2024.
US professional consensus from the certifying college of the discipline. theriogenology.org position statements
Statements are revised without prominent version dates — verify each statement's revision date before citing; not individually fetched in this pass.
AAEP Infectious Disease Guidelines: Equine Viral Arteritis
American Association of Equine Practitioners, AAEP Infectious Disease Guidelines: Equine Viral Arteritis (EVA), revised 2022 (file "Final 2023"); companion EVA vaccination guidelines.
The standard US practitioner reference on the disease most relevant to stallion semen commerce — carrier-stallion management, screening imported semen, vaccination. AAEP EVA guidelines PDF
No comprehensive AAEP "reproduction guidelines" document exists as a single standard — do not cite one. Internal date (2022 revision) vs filename (2023) — cite carefully.
ICAR Guidelines, Section 6 — AI and Relevant Technologies
ICAR (International Committee for Animal Recording), ICAR Guidelines, Section 6 — Artificial Insemination and Relevant Technologies, version 17.02, August 2017.
ICAR's straw-coding standard is the international trade reference for semen identification; also defines non-return-rate calculation. icar.org Section 6 PDF
Covers recording and identification, not sanitary or clinical technique. Verified version is 17.02 (2017) — check icar.org for newer consolidated editions before final citation.
SBTE — Brazilian Embryo Technology Society (society + proceedings)
Sociedade Brasileira de Tecnologia de Embriões (est. 1985); annual meeting proceedings and invited reviews published in Animal Reproduction (e.g., Anim Reprod 22(3), 2025).
The leading scientific society of the world's largest bovine IVP industry — its invited reviews come from the groups that run commercial IVP at the highest volume anywhere. sbte.org.br
Abstract portions of proceedings are not fully peer-reviewed (treat abstracts as Tier C); site is largely Portuguese.
AETE — Association of Embryo Technology in Europe (society + European statistics)
AETE; annual conference (42nd: Rennes, France, Sept 2026); proceedings published in Animal Reproduction; annual European statistics of embryo production and transfer.
The European counterpart to IETS/AETA; its regional statistics feed the IETS global report. aete.eu
Current year's statistics compiler not verified — confirm before citing a specific report.
Hopper (ed.) — Bovine Reproduction, 2nd edition
Hopper RM (ed.), Bovine Reproduction, 2nd edition. Wiley-Blackwell, 2021. 1,280 pp. ISBN 9781119602361. DOI 10.1002/9781119602484.
The most comprehensive dedicated bovine reproduction reference in English (chapter locator verified: recipient herd management, ch. 84); chapter authors are the recognized specialists (Seidel, Bó, et al.). Current edition (2021). Wiley Online Library
Gordon — Laboratory Production of Cattle Embryos, 2nd edition
Gordon I, Laboratory Production of Cattle Embryos, 2nd edition. Biotechnology in Agriculture No. 27, CABI Publishing, 2003. ISBN 9780851996660. DOI 10.1079/9780851996660.0000.
Long the standard monograph of bovine IVP, by a pioneer of large-scale abattoir-ovary IVP (UC Dublin); heavily cited. CABI
2003 — media and protocol specifics superseded; pair with Ferré 2020 (S31) and Hansen 2023 (S38). Verified: no 3rd edition exists.
Noakes, Parkinson & England — Veterinary Reproduction & Obstetrics, 10th edition
Noakes DE, Parkinson TJ, England GCW (eds.), Veterinary Reproduction & Obstetrics, 10th edition. Elsevier, 2019. ISBN 9780702072338.
The canonical UK/Commonwealth veterinary reproduction text, in print across generations of editions. Elsevier
Multi-species — bovine ART chapters less deep than Hopper; cite for clinical and obstetric framing.
Senger — Pathways to Pregnancy and Parturition, 3rd edition
Senger PL, Pathways to Pregnancy and Parturition, 3rd edition. Current Conceptions Inc., 2012. ISBN 9780965764834.
The dominant repro-physiology teaching text in North American animal science and veterinary curricula.
Small-press imprint (no publisher peer-review apparatus) but universal field acceptance. Cite for physiology, not technique.
Hafez & Hafez — Reproduction in Farm Animals, 7th edition
Hafez B, Hafez ESE (eds.), Reproduction in Farm Animals, 7th edition. Lippincott Williams & Wilkins, 2000 (online: Wiley). ISBN 9780683305777. DOI 10.1002/9781119265306.
Classic teaching text with decades of worldwide use and heavy citation.
7th (2000) is the final edition — 26 years old; use for fundamentals only, never for current ART practice. Verified: no 8th edition exists.
Seidel & Seidel — Training Manual for Embryo Transfer in Cattle (FAO Paper 77)
Seidel GE Jr, Seidel SM, Training Manual for Embryo Transfer in Cattle. FAO Animal Production and Health Paper 77, FAO, Rome, 1991. Full text online.
FAO imprint authored by one of the founders of bovine ET (Colorado State); the basis of countless training courses and the verifiable citable form of the CSU short-course lineage. fao.org full text
1991 — hormone products and freezing specifics dated; the step-by-step technique remains pedagogically sound. Current CSU commercial short-course manuals are not publicly published — do not cite them.
Landmarks first (the historical claims a credible manual must get right), then the modern reviews that carry current protocol authority.
Willett et al. 1951 — first calf born from embryo transfer
Willett EL, Black WG, Casida LE, Stone WH, Buckner PJ, "Successful transplantation of a fertilized bovine ovum," Science 1951;113(2931):247. DOI 10.1126/science.113.2931.247.a.
The origin citation of bovine ET (University of Wisconsin).
A one-paragraph letter — cite for historical priority only. The ".a" suffix in the DOI is correct.
Brackett et al. 1982 — first calf from IVF
Brackett BG, Bousquet D, Boice ML, Donawick WJ, Evans JF, Dressel MA, "Normal development following in vitro fertilization in the cow," Biology of Reproduction 1982;27(1):147–158. DOI 10.1095/biolreprod27.1.147. PMID 6896830.
The foundational IVF-calf citation ("Virgil"), in the SSR flagship journal.
Used in vivo-matured oocytes; the fully in vitro system came later (Sirard; Parrish/First heparin capacitation).
Pursley, Mee & Wiltbank 1995 — the original Ovsynch protocol
Pursley JR, Mee MO, Wiltbank MC, "Synchronization of ovulation in dairy cows using PGF2α and GnRH," Theriogenology 1995;44(7):915–923. DOI 10.1016/0093-691X(95)00279-H.
One of the most-cited papers in cattle reproduction (>1,500 citations); the basis of essentially all modern dairy fixed-time AI programs.
Vajta et al. 1998 — Open Pulled Straw vitrification
Vajta G, Holm P, Kuwayama M, Booth PJ, Jacobsen H, Greve T, Callesen H, "Open Pulled Straw (OPS) vitrification: a new way to reduce cryoinjuries of bovine ova and embryos," Molecular Reproduction and Development 1998;51(1):53–58. PMID 9712317.
The method that seeded modern minimum-volume vitrification (including Cryotop); Vajta and Kuwayama are the central names in embryo/oocyte vitrification.
The DOI contains SICI special characters — URL-encode when linking.
Sanches et al. 2016 — direct transfer of cryopreserved IVP embryos
Sanches BV, Zangirolamo AF, da Silva NC, Morotti F, Seneda MM et al., "A new direct transfer protocol for cryopreserved IVF embryos," Theriogenology 2016;85(6):1147–1151. DOI 10.1016/j.theriogenology.2015.11.029.
Field-scale direct transfer of frozen IVP embryos, from Brazil's commercial IVP heartland — the practice that unlocked mass IVP logistics.
Confirm full middle-author order from the article page before final citation (first/senior authors verified).
Ferré et al. 2020 — bovine IVP history & methods review
Ferré LB, Kjelland ME, Strøbech LB, Hyttel P, Mermillod P, Ross PJ, "Review: Recent advances in bovine in vitro embryo production: reproductive biotechnology history and methods," Animal 2020;14(5):991–1004. DOI 10.1017/S1751731119002775. PMID 31760966.
The standard modern methods overview, co-authored by leading embryologists (Hyttel, Mermillod, Ross) — and by L.B. Strøbech, whose bovine protocols already appear on animal.ivfstore.com. Open access makes it an ideal manual anchor. Cambridge Core
Lonergan & Fair 2016 — in vitro maturation of oocytes
Lonergan P, Fair T, "Maturation of oocytes in vitro," Annual Review of Animal Biosciences 2016;4:255–268. DOI 10.1146/annurev-animal-022114-110822. PMID 26566159.
Among the most-cited living authors in bovine embryology (UC Dublin), in the Annual Reviews imprint.
Sirard et al. 2006 — contribution of the oocyte to embryo quality
Sirard MA, Richard F, Blondin P, Robert C, "Contribution of the oocyte to embryo quality," Theriogenology 2006;65(1):126–136. DOI 10.1016/j.theriogenology.2005.09.020. PMID 16256189.
Sirard (Laval) pioneered bovine IVM/IVF; this is the conceptual basis for stimulated-OPU programs.
Bó & Mapletoft 2014 — superovulation in cattle
Bó GA, Mapletoft RJ, "Historical perspectives and recent research on superovulation in cattle," Theriogenology 2014;81(1):38–48. DOI 10.1016/j.theriogenology.2013.09.020.
Bó and Mapletoft are the two definitive names in bovine superovulation; the authority for FSH regimens and wave-synchronized programs.
Bó & Baruselli 2014 — FTAI in beef cattle
Bó GA, Baruselli PS, "Synchronization of ovulation and fixed-time artificial insemination in beef cattle," Animal 2014;8(s1):144–150. DOI 10.1017/S1751731114000822.
The architects of the estradiol/progesterone FTAI systems used on tens of millions of Bos indicus-influenced cattle.
Open-access companion: Bó et al. 2018, Anim Reprod 15(Suppl 1), DOI 10.21451/1984-3143-AR2018-0025 — useful free anchor.
Wiltbank & Pursley 2014 — the cow as an induced ovulator
Wiltbank MC, Pursley JR, "The cow as an induced ovulator: Timed AI after synchronization of ovulation," Theriogenology 2014;81(1):170–185. DOI 10.1016/j.theriogenology.2013.09.017.
The two originators of Ovsynch reviewing twenty years of the protocol family's physiology and refinements.
Hansen 2020 — why aren't ET pregnancy rates greater?
Hansen PJ, "The incompletely fulfilled promise of embryo transfer in cattle…," Journal of Animal Science 2020;98(11):skaa288. DOI 10.1093/jas/skaa288. Free full text PMC7608916.
Leading authority on embryo–uterine biology (Univ. of Florida) in the ASAS flagship journal; open access.
Hansen 2023 — the IVP embryo in cattle production: state of the art
Hansen PJ, "Review: Some challenges and unrealized opportunities toward widespread use of the in vitro-produced embryo in cattle production," Animal 2023;17(Suppl 1):100745. DOI 10.1016/j.animal.2023.100745. PMC10659117.
The most current broad IVP assessment from a top laboratory.
Seidel 2014 — sexed semen technology in cattle
Seidel GE Jr, "Update on sexed semen technology in cattle," Animal 2014;8(s1):160–164. DOI 10.1017/S1751731114000202. PMID 24680061.
Seidel led the team that commercialized flow-cytometric semen sexing — the definitive insider review of the technology's fundamentals.
Pre-dates SexedULTRA 4M-era products (~2016+); pair with Holden & Butler 2018, Animal 12(1):97–103 (DOI 10.1017/S1751731117001306 — seen in searches, not independently re-verified) for current field performance.
Vishwanath 2003 — AI: the state of the art
Vishwanath R, "Artificial insemination: the state of the art," Theriogenology 2003;59(2):571–584. DOI 10.1016/S0093-691X(02)01241-4.
Widely cited AI-industry overview from a senior industry scientist (LIC, later STgenetics).
2003 — industry figures dated.
Boni 2012 — ovum pick-up in cattle: 25-year retrospective
Boni R, "Ovum pick-up in cattle: a 25 yr retrospective analysis," Animal Reproduction 2012;9(3):362–369. No DOI (pre-DOI era); full text on journal site.
By one of the pioneers of early-1990s OPU. animal-reproduction.org
Journal was lower-impact in 2012 (now Scopus/PubMed-indexed); pair with S42 for currency.
Ferré et al. 2023 — OPU state of the art
Ferré LB, Kjelland ME, Taiyeb AM, Campos-Chillon F, Ross PJ, "Transvaginal ultrasound-guided oocyte retrieval in cattle: State-of-the-art and its impact on the in vitro fertilization embryo production outcome," Reproduction in Domestic Animals 2023;58(3):363–378. DOI 10.1111/rda.14303.
Current benchmark reference for donor prep, FSH stimulation, retrieval variables and outcome expectations.
Verify middle-author list from the article page (first/last authors confirmed).
McKinnon, Squires, Vaala & Varner (eds.) — Equine Reproduction, 2nd edition
McKinnon AO, Squires EL, Vaala WE, Varner DD (eds.), Equine Reproduction, 2nd edition (2-volume set, ~3,000+ pp). Wiley-Blackwell, 2011. ISBN 978-0-8138-1971-6.
The standard reference work of equine reproduction; the editors are the discipline's leading figures. Confirmed current edition — no 3rd edition as of Aug 2026. Wiley
2011 — predates the 2022 conventional-IVF breakthrough (S55) and current commercial OPU-ICSI scale; pair with post-2018 reviews for in-vitro topics.
Dascanio & McCue (eds.) — Equine Reproductive Procedures, 2nd edition
Dascanio J, McCue P (eds.), Equine Reproductive Procedures, 2nd edition. Wiley-Blackwell, 2021. ISBN 978-1-119-55598-8. Book DOI 10.1002/9781119556015.
The most current step-by-step procedural reference in the field; McCue runs the CSU Equine Reproduction Laboratory, one of the largest academic ET/ICSI programs. Wiley Online Library
Procedure format is brief per topic — not a physiology reference.
Brinsko et al. — Manual of Equine Reproduction, 3rd edition
Brinsko SP, Blanchard TL, Varner DD, Schumacher J, Love CC, Hinrichs K, Hartman DL, Manual of Equine Reproduction, 3rd edition. Mosby/Elsevier, 2011. ISBN 978-0-323-06482-8.
Texas A&M theriogenology faculty (including Hinrichs); the standard student/practitioner manual. Confirmed current edition — no 4th found. Elsevier
Practical depth, not a research reference; advanced ART coverage is brief.
Samper (ed.) — Equine Breeding Management and Artificial Insemination, 2nd edition
Samper JC (ed.), Equine Breeding Management and Artificial Insemination, 2nd edition. Saunders/Elsevier, 2009. ISBN 978-1-4160-5234-0.
The dedicated stallion-side AI and breeding-management reference, by an internationally recognized ACT diplomate.
2009 — frozen-semen protocols largely still valid but check against newer reviews (e.g., Loomis & Graham, S66).
McCue & Squires — Equine Embryo Transfer
McCue PM, Squires EL, Equine Embryo Transfer. Teton NewMedia / CRC Press, 2015. ISBN 978-1-59161-047-2. Book DOI 10.1201/b18123.
The only dedicated equine-ET book, by the two names most associated with commercial-scale equine ET. Taylor & Francis
Concise handbook format; 2015.
Ginther — Reproductive Biology of the Mare, 2nd edition
Ginther OJ, Reproductive Biology of the Mare: Basic and Applied Aspects, 2nd edition. Equiservices Publishing, Cross Plains, WI, 1992. ISBN 978-0-9640072-1-5.
Ginther is among the most-cited equine reproductive physiologists; this is the canonical physiology source cited across the ART literature.
1992; self-published imprint (Ginther's own Equiservices — standard in this field but worth noting). Cite for physiology, not current technique.
Equine landmark history has several commonly mis-cited items; the corrected attributions below (S51, S52, S65) were established during verification and matter for credibility.
Oguri & Tsutsumi 1972 — first non-surgical equine egg recovery/transfer attempt
Oguri N, Tsutsumi Y, "Non-surgical recovery of equine eggs, and an attempt at non-surgical egg transfer in horses," Journal of Reproduction and Fertility 1972;31(1):187–195. DOI 10.1530/jrf.0.0310187. PMID 4637635.
The first journal report of non-surgical equine embryo recovery (Hokkaido University).
Oguri & Tsutsumi 1974 — first foals from non-surgical ET
Oguri N, Tsutsumi Y, "Non-surgical egg transfer in mares," Journal of Reproduction and Fertility 1974;41(2):313–320. DOI 10.1530/jrf.0.0410313. PMID 4452974.
First live foals from non-surgical embryo transfer.
Allen & Rowson 1972 — first surgical equine ET (horse/donkey)
Allen WR, Rowson LEA, "Transfer of ova between horses and donkeys," Proceedings of the 7th International Congress on Animal Reproduction and Artificial Insemination, Munich, 1972, pp. 484–486.
The foundational Cambridge report of surgical equine ET.
Correction to a common mis-citation: this is congress proceedings, not a J Reprod Fertil article — no such journal paper exists in Crossref or Europe PMC. Some sources give pp. 485–487. Original not independently inspected.
Squires et al. 1996 — first equine ICSI pregnancy (→ first ICSI foal)
Squires EL, Wilson JM, Kato H, Blaszczyk A, "A pregnancy after intracytoplasmic sperm injection into equine oocytes matured in vitro," Theriogenology 1996;45(1):306 (abstract). DOI 10.1016/0093-691X(96)84779-0.
The pregnancy reported here produced the world's first ICSI foal (born 1996 at CSU).
A one-page IETS abstract reporting a pregnancy, not a birth — phrase manual text as: "first ICSI pregnancy reported by Squires et al. (1996); the resulting foal was the first produced by ICSI," with the birth documented in subsequent literature (McKinnon S43; Hinrichs S56).
Woods et al. 2003 — first cloned equid (mule "Idaho Gem")
Woods GL, White KL, Vanderwall DK, Li G-P, Aston KI, Bunch TD, Meerdo LN, Pate BJ, "A mule cloned from fetal cells by nuclear transfer," Science 2003;301(5636):1063. DOI 10.1126/science.1086743. PMID 12775846.
First cloned member of the equid family, published ~10 weeks before Prometea.
Get precedence right: Idaho Gem (mule, May 2003, Science) = first cloned equid; Prometea (S54) = first cloned horse.
Galli et al. 2003 — first cloned horse ("Prometea")
Galli C, Lagutina I, Crotti G, Colleoni S, Turini P, Ponderato N, Duchi R, Lazzari G, "Pregnancy: a cloned horse born to its dam twin," Nature 2003;424(6949):635. DOI 10.1038/424635a. PMID 12904778.
First cloned horse (Avantea, Cremona); notably carried by the nuclear donor's genetic twin.
One-page Brief Communication — methods detail is in the group's follow-up papers (S63).
Felix et al. 2022 — the conventional equine IVF breakthrough
Felix MR, Turner RM, Dobbie T, Hinrichs K, "Successful in vitro fertilization in the horse: production of blastocysts and birth of foals after prolonged sperm incubation for capacitation," Biology of Reproduction 2022;107(6):1551–1564. DOI 10.1093/biolre/ioac172. Published correction: Biol Reprod 2023;108(5):849, DOI 10.1093/biolre/ioad028.
Widely recognized as the resolution of equine reproduction's 30-year "IVF problem" — ~74% fertilization, blastocysts and live foals from a repeatable standard method (Hinrichs lab, PennVet). PMC full text
Cite the 2023 correction alongside. Initial method used fresh semen; frozen-semen adaptations reported later by the same lineage.
Hinrichs 2018 — assisted reproductive techniques in mares
Hinrichs K, "Assisted reproductive techniques in mares," Reproduction in Domestic Animals 2018;53(Suppl 2):4–13. DOI 10.1111/rda.13259.
The best single modern overview of mare-side ART, from the researcher whose lab defined clinical equine ICSI.
Invited conference review in a supplement issue — still peer-reviewed and heavily cited.
Stout 2006 — equine embryo transfer: review of developing potential
Stout TAE, "Equine embryo transfer: review of developing potential," Equine Veterinary Journal 2006;38(5):467–478. DOI 10.2746/042516406778400529.
Utrecht's program lead in the field's top equine clinical journal.
2006 — pair with S58/S67 for the vitrification era.
Stout 2020 — clinical application of in vitro embryo production in the horse
Stout TAE, "Clinical application of in vitro embryo production in the horse," Journal of Equine Veterinary Science 2020;89:103011. DOI 10.1016/j.jevs.2020.103011.
Current clinical OPU-ICSI practice from one of Europe's leading programs.
Claes & Stout 2022 — success rates in a clinical equine IVP program
Claes A, Stout TAE, "Success rate in a clinical equine in vitro embryo production program," Theriogenology 2022;187:215–218. DOI 10.1016/j.theriogenology.2022.04.019.
The go-to citation for real-world per-session and per-embryo success figures.
Short communication.
Carnevale 2004 — oocyte transfer and GIFT in the mare
Carnevale EM, "Oocyte transfer and gamete intrafallopian transfer in the mare," Animal Reproduction Science 2004;82–83:617–624. DOI 10.1016/j.anireprosci.2004.04.002. PMID 15271484.
Carnevale (CSU) built the world's principal clinical oocyte-transfer program — the definitive source on the technique.
Oocyte transfer has since been largely displaced clinically by ICSI — the manual should state this.
Carnevale et al. 2005 — clinical oocyte transfer outcomes
Carnevale EM, Coutinho da Silva MA, Panzani D, Stokes JE, Squires EL, "Factors affecting the success of oocyte transfer in a clinical program for subfertile mares," Theriogenology 2005;64(3):519–527. DOI 10.1016/j.theriogenology.2005.05.008.
The largest published clinical oocyte-transfer dataset.
Morris & Allen 2002 — low-dose insemination in the mare
Morris LHA, Allen WR, "An overview of low dose insemination in the mare," Reproduction in Domestic Animals 2002;37(4):206–210. DOI 10.1046/j.1439-0531.2002.00375.x.
From the pioneers of hysteroscopic AI (Allen, Cambridge — a central figure of 20th-century equine reproduction; Morris, EMCU).
2002; complement with Samper 2010 RDA (DOI 10.1111/j.1439-0531.2010.01632.x) for later technique comparison if needed.
Galli et al. 2014 — OPU, ICSI and SCNT: lab to clinic
Galli C, Duchi R, Colleoni S, Lagutina I, Lazzari G, "Ovum pick up, intracytoplasmic sperm injection and somatic cell nuclear transfer in cattle, buffalo and horses: from the research laboratory to clinical practice," Theriogenology 2014;81(1):138–151. DOI 10.1016/j.theriogenology.2013.09.008.
From Avantea — producers of the first cloned horse and Europe's leading commercial equine ICSI/cloning lab.
Commonly mis-dated as 2007 — it is 2014, vol. 81.
Squires, McCue & Vanderwall 1999 — the current status of equine ET
Squires EL, McCue PM, Vanderwall D, "The current status of equine embryo transfer," Theriogenology 1999;51(1):91–104. DOI 10.1016/S0093-691X(98)00234-9.
The CSU group that industrialized equine ET.
1999 — historical/contextual value; use S57/S58 for current practice.
Kraemer 2013 — a history of equine embryo transfer
Kraemer DC, "A history of equine embryo transfer and related technologies," Journal of Equine Veterinary Science 2013;33(5):305–308. DOI 10.1016/j.jevs.2013.03.007.
By an ET pioneer across species (Texas A&M) — the anchor for any historical chapter.
Attribution note: this history review is by Kraemer, not Squires, as sometimes credited.
Loomis & Graham 2008 — commercial stallion semen freezing
Loomis PR, Graham JK, "Commercial semen freezing: individual male variation in cryosurvival and the response of stallion sperm to customized freezing protocols," Animal Reproduction Science 2008;105(1–2):119–128. DOI 10.1016/j.anireprosci.2007.11.010.
Real commercial data from Select Breeders Services (a leading stallion-semen freezing network) with CSU cryobiology.
Industry-affiliated first author — also its strength.
Choi & Hinrichs 2017 — equine blastocyst vitrification in a clinical program
Choi Y-H, Hinrichs K, "Vitrification of in vitro-produced and in vivo-recovered equine blastocysts in a clinical program," Theriogenology 2017;87:48–54. DOI 10.1016/j.theriogenology.2016.08.005. PMID 27634397.
The practice reference for equine embryo vitrification.
For >300 µm embryos without puncture, newer work exists (e.g., Theriogenology 2024, PMID 38450769) — supplementary.
Schmidt 2011 — deep-horn frozen-semen AI (AAEP how-to)
Schmidt AR, "How to breed mares with frozen semen by deep horn insemination," Proceedings of the 57th Annual Convention of the AAEP, San Antonio, TX, 2011. Archived on IVIS.
Practitioner-level technique detail from the AAEP convention program. IVIS
Convention program review, not journal peer review; pull page numbers from the PDF before final citation.
Hudson & McCue 2004 — increasing embryo recovery and transfer success (AAEP how-to)
Hudson JJ, McCue PM, "How to increase embryo recovery rates and transfer success," Proceedings of the 50th Annual Convention of the AAEP, Denver, CO, 2004. Archived on IVIS.
Practical ET technique from the CSU program. IVIS
2004; not journal peer-reviewed.
The venues themselves — where the manual's ongoing evidence will come from, and how much weight each carries.
Theriogenology
Theriogenology: An International Journal of Animal Reproduction. Elsevier. ISSN 0093-691X.
The flagship journal of animal clinical reproduction and the principal venue for bovine/equine ART technique literature; Q1 in its categories.
Animal Reproduction Science
Animal Reproduction Science. Elsevier. ISSN 0378-4320.
Q1 animal-science journal; historically the venue for equine reproduction symposium special issues.
Reproduction, Fertility and Development — IETS proceedings venue
Reproduction, Fertility and Development. CSIRO Publishing. ISSN 1031-3613. Publishes the IETS Annual Conference proceedings each January (confirmed on iets.org; IETS 2026 abstracts in Vol. 38(1)).
The official publication route of IETS conference science. publish.csiro.au/rd
January IETS issues mix abstracts (short, not fully peer-reviewed) with invited reviews (full papers) — distinguish when citing.
Journal of Equine Veterinary Science
Journal of Equine Veterinary Science. Elsevier. ISSN 0737-0806. Also publishes Equine Science Society symposium proceedings.
The principal equine-specific venue for applied reproduction.
Paper quality varies more than Theriogenology — check methods on individual papers.
Reproduction in Domestic Animals
Reproduction in Domestic Animals. Wiley. ISSN 1439-0531. Publishes ESDAR conference material.
Long-standing (formerly Zuchthygiene); strong clinical repro content.
Animal Reproduction (open access)
Animal Reproduction. Official journal of the Colégio Brasileiro de Reprodução Animal; carries SBTE (and joint SBTE×AETE) proceedings. ISSN 1984-3143. Diamond open access (CC-BY).
The open-access window into the world's largest commercial bovine IVP industry — Tier A for its bovine IVP reviews and proceedings. animal-reproduction.org
Some proceedings content is invited review rather than primary data.
Clinical Theriogenology
Clinical Theriogenology. Official journal of the Society for Theriogenology and the American College of Theriogenologists. ISSN 2154-3968. Open access (CC BY-NC 4.0).
Backed by the two principal North American theriogenology bodies; excellent for clinical technique. clinicaltheriogenology.net
Lower citation metrics; much content is case reports — Tier C for basic-science claims.
Reproduction (formerly J. Reproduction and Fertility)
Reproduction. Society for Reproduction and Fertility; now published by Oxford University Press (migration from Bioscientifica confirmed by redirect). 2025 IF 3.4.
High-standing reproductive biology; its predecessor's JRF Supplements carried the historical ISER equine proceedings. Tier A for mechanism, B for applied technique.
Publisher change alert: cite current volumes as OUP/SRF, not Bioscientifica.
Journal of Dairy Science
Journal of Dairy Science. American Dairy Science Association / Elsevier. ISSN 0022-0302. Fully open access since 2024.
The primary literature behind the DCRC protocols (Fricke, Wiltbank, Santos et al.) is published here; definitive for dairy repro management.
Bovine dairy only.
Frontiers in Veterinary Science — Animal Reproduction/Theriogenology section
Frontiers in Veterinary Science, section "Animal Reproduction – Theriogenology" (launched 2017). Frontiers Media SA. Gold OA.
Useful review collections, often by recognized authors.
APC-driven volume means variable rigor — prefer reviews by known authors and corroborate primary claims elsewhere.
ISER — International Symposium on Equine Reproduction
International Symposium on Equine Reproduction, quadrennial since 1974; historical proceedings in J Reprod Fertil Supplements and Animal Reproduction Science special issues; back proceedings archived on IVIS.
The defining scientific meeting of equine reproduction. iser-online.org
Verify the exact journal/volume per edition before citing a specific ISER paper.
IVIS — International Veterinary Information Service
IVIS digital library — free repository hosting AAEP and ISER proceedings and equine reproduction texts.
Long-established nonprofit access route to otherwise scattered proceedings. ivis.org
An aggregator — always cite the underlying document; content tier follows the original.
DCRC — Dairy Cattle Reproduction Council protocol sheets
Dairy Cattle Reproduction Council, recommended synchronization protocol sheets (Ovsynch, Presynch-Ovsynch, Double-Ovsynch, G-6-G, CIDR-based cow and heifer programs), periodically revised (2016, 2018+ revisions documented); plus annual meeting proceedings.
Industry–academic consensus authored by the leading university physiologists (Fricke, Wiltbank et al.); the de facto North American field standard for FTAI. dcrcouncil.org/protocols
Sheets are versioned — cite the revision year of the sheet used, alongside Pursley 1995 (S28) / Wiltbank & Pursley 2014 (S36) as the peer-reviewed basis.
Penn State Extension — Artificial Insemination Technique: Cattle
O'Connor ML, Peters JL (updated by A. Sandeen, 2022; page updated 25 Nov 2024), "Artificial Insemination Technique: Cattle," Penn State Extension. Companion pages on timed-AI protocols and insemination timing.
Land-grant extension by dairy science faculty, current (2024 update) — definitive for practical AI technique teaching. extension.psu.edu
Extension review, not journal peer review.
Mississippi State Extension — Artificial Insemination Programs for Cattle (P2628)
Parish J, Larson J (rev. Karisch B), Artificial Insemination Programs for Cattle, MSU Extension Publication P2628. MSU also runs a hands-on AI School.
Land-grant, faculty-authored beef AI program guidance. extension.msstate.edu
Colorado State University — ARBL / Equine Reproduction Laboratory
Animal Reproduction and Biotechnology Laboratory, CVMBS, Colorado State University, Fort Collins — with the associated CSU Equine Reproduction Laboratory (clinical services and short courses).
Historically the origin of much modern equine ET/AI methodology (Squires, Seidel, McCue, Carnevale lineage); one of the most respected ART programs worldwide. colostate.edu/arbl
The website is an institutional overview, not a protocol repository — cite ARBL-affiliated publications rather than web pages. Short-course manuals are not publicly published.
IVF Bioscience — BO media line & bovine/equine IVF protocols
IVF Bioscience (UK). Ready-to-use serum-free media: BO line for bovine (BO-IVM, BO-IVF, BO-IVC class; BO-Freeze confirmed) plus a dedicated equine range; protocol guides and hands-on training courses.
Widely used in commercial bovine IVP labs; presents at IETS/AETE. Directly relevant: the existing animal.ivfstore.com protocol blog posts sit in this media ecosystem. ivfbioscience.com
Protocols are optimized for their own media. The Dr. Lotte Strøbech attribution on current guides is not verifiable on today's site — she is historically associated with the media line but now operates separately (Strøbech Media / Strøbech IVF). Check each document's byline before crediting; her peer-reviewed authority is anchored via Ferré et al. 2020 (S31).
IMV Technologies
IMV Technologies, L'Aigle, France — AI equipment (originator of the plastic straw system), semen processing/analysis, ET equipment; "IMV Academy" training resources.
The 0.25/0.5 mL straw standard is theirs — technical documentation reflects de facto industry practice. imv-technologies.com
Specific handbooks not individually verified — cite named documents from the Academy/media library after retrieval.
Minitube (Minitüb GmbH)
Minitube, Tiefenbach, Germany — systems for assisted animal reproduction from semen collection through ET; CASA (AndroVision), filling/sealing, freezing; Media Library with catalogs and technical reports.
One of the two dominant global suppliers (with IMV); technical reports widely used in practice. minitube.com
Protocols tied to Minitube consumables.
Vytelle
Vytelle LLC — hormone-free bovine IVF platform (Vytelle ADVANCE: OPU + IVF network across the US, Australia, NZ; Vytelle SENSE phenotyping).
Major global commercial IVP operator with a documented, distinctive hormone-free methodology. vytelle.com
"Hormone-free" framing is a marketing differentiator — corroborate performance claims against peer-reviewed data.
Trans Ova Genetics
Trans Ova Genetics, Sioux Center, IA — 45+ years; bovine ET, IVF, sexed semen, cloning and genetic preservation, fresh-ship embryo program, export services; educational blog and downloads.
Among the largest and longest-established US bovine ART providers — client materials reflect industry-standard practice. transova.com
Client-facing pages are simplified; cite their peer-reviewed output where possible.
Boviteq (a Semex company)
Boviteq — bovine IVF laboratory (Madison, WI and Canadian operations); OPU, IVF, ET, cryopreservation via accredited satellite centers.
R&D-active lab whose scientists publish in Theriogenology/JDS. boviteq.com
Cite their peer-reviewed papers rather than web copy; downloadable PDF contents not individually verified.
ABS Global / Select Sires — AI industry technique resources
ABS Global (Genus plc), DeForest, WI; Select Sires Inc., Plain City, OH — technical services, "Select University" educational program, member-cooperative AI training schools, semen handling and thawing specifications.
These organizations train most US AI technicians; their semen-handling specifications are de facto industry standards. absglobal.com · selectsires.com
They sell the semen. Genex (URUS) was not verified in this pass — do not cite without verification.
Botupharma — equine semen extenders
Botupharma (Botucatu, Brazil; US arm Botupharma USA) — BotuSemen and BotuCrio extenders for stallion semen cooling and cryopreservation, with per-product usage instructions.
Extenders from the UNESP-Botucatu research lineage, widely used and featured in peer-reviewed stallion cryo studies. botupharmausa.com
"Most used worldwide" is marketing. The Dr. Frederico Papa founding attribution is not stated on the fetched pages — verify before printing.
Hamilton Thorne — CASA instrumentation
Hamilton Thorne — IVOS II and CEROS II computer-assisted sperm analysis systems; laser systems for ICSI/embryo biopsy; application documentation.
IVOS/CEROS are the reference CASA platforms in a large share of published semen studies — instrument settings from their documentation are frequently cited in methods sections. hamiltonthorne.com
Relevant to methodology/QC chapters only, never as clinical protocol authority.
A register that claims to survive scrutiny must disclose what it could not fully verify. The following are the honest residuals as of 26 August 2026:
1. IETS Manual edition year (S7). The 4th edition, format, price and languages are confirmed on iets.org; the year 2010 and Stringfellow & Givens editorship rest on WorldCat and citing literature. Confirm with IETS before print.
2. WOAH currency (S1–S2). Entries cite the current online Code (updated 5 September 2025, 92nd General Session, Resolution No. 25) alongside the archived 32nd edition (2024) as the citation of record; the Ch. 4.6 and 4.8 texts were fetched directly, including the Art. 4.8.7 trypsin caution reflected in the equine reference.
3. Corrected attributions established during verification: Allen & Rowson 1972 is congress proceedings, not a J Reprod Fertil paper (S51); the equine ET history review is Kraemer 2013, not Squires (S65); Galli's OPU/ICSI/SCNT review is 2014, not 2007 (S63); Squires et al. 1996 reports a pregnancy, not a birth (S52); Felix et al. 2022 has a published correction to cite alongside (S55); Reproduction has moved from Bioscientifica to Oxford University Press (S77).
4. Flagged before use: Strøbech attribution on current IVF Bioscience guides (S86); Botupharma founder attribution (S93); ISER recent proceedings venue (S80); Genex resources (unverified — excluded); Holden & Butler 2018 DOI (S39, seen but not re-verified); AETE current statistics compiler (S19); EU import acts 2020/692 and 2021/403 (mentioned at S4, not fetched).
5. Excluded as uncitable: current CSU commercial short-course manuals (not publicly published — FAO Paper 77, S25, is the citable form); any "AAEP reproduction guidelines" as a single document (does not exist — S16 is the verified AAEP item); Gordon 3rd edition and Hafez 8th edition (do not exist).
Document control. Compiled by Animal IVF Store with AI-assisted research and verification. Scientific reviewer: to be named on publication — until a named reviewer appears here, treat this page as editorially compiled, not peer-reviewed. Jurisdictional scope: international standards (WOAH, IETS) with United States and European Union regulatory detail; other jurisdictions differ. Change log: Ed. 1.0 (26 Aug 2026) — initial published edition: 94 sources, verified the same date; incorporates a pre-publication external review (WOAH online-Code currency, APHIS routing correction, per-source anchors and DOI links, role taxonomy, jump index and accessibility).
