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Climatic and calf-related risk factors associated with failure of transfer of passive immunity in Holstein calves in a hot environment.
Mellado, M; Arroyo, N; García, J E; Arias, N; Macías-Cruz, U; Mellado, J.
Afiliação
  • Mellado M; Department of Animal Nutrition, Autonomous Agrarian University Antonio Narro, 25315, Saltillo, Mexico. mmellbosq@yahoo.com.
  • Arroyo N; Department of Veterinary Science, Autonomous Agrarian University Antonio Narro, 27054, Torreon, Mexico.
  • García JE; Department of Animal Nutrition, Autonomous Agrarian University Antonio Narro, 25315, Saltillo, Mexico.
  • Arias N; Private Dairy Consultant, Torreon, Mexico.
  • Macías-Cruz U; Institute of Agricultural Sciences, Autonomous University of Baja California, Mexicali, Mexico.
  • Mellado J; Department of Animal Nutrition, Autonomous Agrarian University Antonio Narro, 25315, Saltillo, Mexico.
Trop Anim Health Prod ; 56(2): 57, 2024 Jan 24.
Article em En | MEDLINE | ID: mdl-38265480
ABSTRACT
This retrospective observational study aimed to assess the effect of temperature-humidity index (THI) at calving and in the last trimester of pregnancy and calve-related factors affecting passive transfer of maternal immunoglobulin using Brix refractometry in Holstein calves. Blood samples from 4411 Holstein calves from a single large dairy farm in spring 2022 were used. A subset of data containing 6318 calvings was used to determine the effect of climatic conditions on the occurrence of agammaglobulinemia. Risk factors predictive of failure of passive transfer (FPT) were calculated using multiple logistic models. Females were 1.4 times more likely not to have FPT (56%; Brix% > 8 equivalent to ≥ 10 g/L IgG) than males (47.2%). Calves born as singles increased the likelihood of not presenting FPT (52.6%) than calves born as twins (42.9%). Calves from cows with no dystocic delivery had a lower risk for FPT (odds ratio = 2.3) than calves from cows with dystocia. Agammaglobulinemia was 1.5 and 1.8 times more likely to occur in calves with THI ≥ 80 and ≥ 82 in the last trimester of gestation and at calving, respectively, than in calves not experiencing heat stress. Agammaglobulinemia was twice as likely to occur in male than in female calves. Calves with birth weight ≥ 37 kg and gestation length ≥ 275 kg were less likely to present agammaglobulinemia than lighter calves and calves with shorter gestation periods. This study raises questions for management practices in Holstein calves undergoing in utero heat stress and around calving to avoid agammaglobulinemia.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Doenças dos Bovinos / Agamaglobulinemia / Distocia Tipo de estudo: Etiology_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Limite: Animals / Pregnancy Idioma: En Revista: Trop Anim Health Prod Ano de publicação: 2024 Tipo de documento: Article País de afiliação: México País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Doenças dos Bovinos / Agamaglobulinemia / Distocia Tipo de estudo: Etiology_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Limite: Animals / Pregnancy Idioma: En Revista: Trop Anim Health Prod Ano de publicação: 2024 Tipo de documento: Article País de afiliação: México País de publicação: Estados Unidos