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Calf- and herd-level factors associated with dairy calf reactivity.
Calderón-Amor, J; Beaver, A; von Keyserlingk, M A G; Gallo, C.
Afiliação
  • Calderón-Amor J; Escuela de Graduados, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia 5090000, Chile; Animal Welfare Program, Faculty of Land and Food Systems, University of British Columbia, 2357 Mall, Vancouver, BC, Canada, V6T 1Z4.
  • Beaver A; Animal Welfare Program, Faculty of Land and Food Systems, University of British Columbia, 2357 Mall, Vancouver, BC, Canada, V6T 1Z4.
  • von Keyserlingk MAG; Animal Welfare Program, Faculty of Land and Food Systems, University of British Columbia, 2357 Mall, Vancouver, BC, Canada, V6T 1Z4.
  • Gallo C; Instituto de Ciencia Animal, Facultad de Ciencias Veterinarias, OIE Collaborating Centre for Animal Welfare and Livestock Production Systems-Chile, Universidad Austral de Chile, Valdivia 5090000, Chile. Electronic address: cgallo@uach.cl.
J Dairy Sci ; 103(5): 4606-4617, 2020 May.
Article em En | MEDLINE | ID: mdl-32147267
A positive relationship between handlers and animals in farm systems is essential because the human-animal relationship has implications for welfare and productivity. For this reason, on-farm animal welfare assessment protocols often include the behavioral response of animals to humans to measure the quality of the human-animal relationship. The existing literature has described this relationship as being multifactorial in nature. In the current study, we aimed to investigate the potential influence of farm management and infrastructure characteristics, calf manager traits, and intrinsic features of dairy calves on the human-animal relationship. To this end, an escape test was conducted with 698 calves on 30 dairy farms in Chile. This test measured the calf's response to the active approach of an unfamiliar human (and was scored from 0 [fearful] to 4 [friendly]). The explanatory variables used to predict calves' response in the escape test were grouped according to the following categories: (1) farm management and infrastructure (e.g., calf-dam separation age, space allowance); (2) calf manager (e.g., attitudes, behavior, and background); and (3) calf (e.g., breed, sex, age). We concluded that calf managers with additional jobs on the farm, no training, low job satisfaction, a greater proportion of negative contacts, and more negative attitudes were predictive of fearfulness in the escape test. Holstein breed (compared with Holstein and Jersey crossbreeds) was associated with greater odds of fearful calves. Our study confirms the association between animals' fear and handlers' features, which can potentially be used to select employees on a farm. Understanding the factors that influence fear responses in calves may highlight ways to improve the relationship between animals and humans.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Bem-Estar do Animal / Bovinos / Indústria de Laticínios / Fazendeiros Tipo de estudo: Prognostic_studies / Risk_factors_studies Limite: Animals / Female / Humans / Male País/Região como assunto: America do sul / Chile Idioma: En Revista: J Dairy Sci Ano de publicação: 2020 Tipo de documento: Article 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: Bem-Estar do Animal / Bovinos / Indústria de Laticínios / Fazendeiros Tipo de estudo: Prognostic_studies / Risk_factors_studies Limite: Animals / Female / Humans / Male País/Região como assunto: America do sul / Chile Idioma: En Revista: J Dairy Sci Ano de publicação: 2020 Tipo de documento: Article País de publicação: Estados Unidos