Pregnancy Loss (28–110 Days of Pregnancy) in Holstein Cows: A Retrospective Study
Autor: | Francisco Sebastian, José Luis Pesantez-Pacheco, Juan Manuel Loste, Natividad Perez-Villalobos, Susana Astiz, Octavi Fargas, Aitor Fernandez-Novo, Raquel Patron-Collantes |
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Přispěvatelé: | Producción Científica UCH 2020, UCH. Departamento de Producción y Sanidad Animal, Salud Pública Veterinaria y Ciencia y Tecnología de los Alimentos |
Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
Holstein Cattle
genetic structures Embarazo medicine.medical_treatment Semen Farms - Management Article Reproducción asistida en los animales Animal science lcsh:Zoology medicine Ganado vacuno lcsh:QL1-991 Estrous cycle Animal welfare Pregnancy Cattle breeds - Holstein - Obstetrics lcsh:Veterinary medicine General Veterinary business.industry reproductive strategy Artificial insemination rank of AI Retrospective cohort study Odds ratio medicine.disease Ganado vacuno - Razas - Holstein - Obstetricia humanities type of AI Cattle breeds - Holstein - Reproductive technology body regions Granjas - Gestión Gestación parity lcsh:SF600-1100 Animal Science and Zoology Bienestar animal Veterinaria business Parity (mathematics) season Reproductive technologie in animals Ganado vacuno - Razas - Holstein - Reproducción asistida |
Zdroj: | Animals Volume 10 Issue 6 ABACUS. Repositorio de Producción Científica Universidad Europea (UEM) Animals, Vol 10, Iss 925, p 925 (2020) CEU Repositorio Institucional Fundación Universitaria San Pablo CEU (FUSPCEU) Animals : an Open Access Journal from MDPI |
ISSN: | 2076-2615 |
DOI: | 10.3390/ani10060925 |
Popis: | The objective of this retrospective study was to investigate the prevalence of pregnancy loss (PL between 28&ndash 110 pregnancy days) and its relationship with factors: farm, year (2015&ndash 2018), season, artificial insemination (AI)-rank, parity, AI-type (fixed-time vs. oestrus-AI), previous PL, days in milk (DIM), fixed-time-AI protocol, AI-technician, bull, and semen-type (sexed vs. conventional). Data of 19,437 Holstein cattle AIs from eight Spanish farms were studied. Overall conception rate was 34.3% (6696/19,437) and PL 12.3% (822/6696). The PL was more likely to occur in primiparous (10.8%, odds ratio (OR) = 1.35 p = 0.04) and multiparous (15.3% OR = 2.02, p < 0.01) than in heifers (PL = 6.9%, reference). Pregnancies achieved with AI after observed oestrus and natural breedings were associated with less PL than pregnancies after fixed-time-AI (12.7 vs. 11.9% OR = 0.12, p = 0.01). First AIs related to higher PL than &ge 2nd AIs (PL = 13.8% vs. 11.2 OR = 0.73, p < 0.01). The factors season, fixed-time-AI protocol, DIM, bull, AI-technician, or type of semen were not significantly associated with PL. Therefore, farmers and consultants should adapt their preventive strategies relating to PL, particularly, to the parity of the cattle. |
Databáze: | OpenAIRE |
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