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
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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