Artículo
Stress Response at different Ages of Weaning in Cattle
Odeon, Maria Mercedes
; Munilla, María Eugenia
; Lado, M.; de Fino, Fernanda Teresa
; Maidana, Silvina Soledad
; Vittone, Juan Sebastian; Romera, Sonia
Fecha de publicación:
02/2019
Editorial:
Infogain Publication
Revista:
International Journal of Environment, Agriculture and Biotechnology
ISSN:
2456-1878
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Weaning is an inherent husbandry practice incow-calf beef production systems that impose physical,psychological, and nutritional stressors on calves. In orderto characterize the main stressors and corresponding stressresponses of calves, two weaning schemes were studied.One of conventional weaning (6 month calves) and anotherof early weaning (1 month calves). Blood samples wereanalyzed in an hematology analyzer, the plasma wasseparated and an analysis of total protein and of cortisollevels was carried. Finally, the response to a vaccine wasassessed by analyzing antibody response titers. Asignificant decrease in the number of lymphocytes andincrease in the number of granulocytes was observed in theconventionally weaned group leading to an elevated GR:LYratio. On day one post-weaning, plasmatic proteins showeda significant increase of similar range in both groups. Withregard to cortisol levels, there was a strong increase at dayone corresponding to a clear stress response in theconventional weaning group, wheras in the group of earlyweaning animals only a marginal increase which difficultreturned to baseline levels could be observed. As to theantibody response to vaccination, early weaning animalsdid not show a satisfactory response as was observed incalves subjected to conventional weaning. In conclusion,leukocyte subsets, plasmatic proteins, cortisol levels, andimmune status were altered after weaning challenge in bothstudied age groups of calves. Results indicate weaning as astressor, regardless of age.
Palabras clave:
EARLY WEANING
,
CORTISOL
,
IMMUNE RESPONSE
,
STRESS RESPONSE
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Articulos(ININFA)
Articulos de INST.DE INVEST.FARMACOLOGICAS (I)
Articulos de INST.DE INVEST.FARMACOLOGICAS (I)
Articulos(OCA PQUE. CENTENARIO)
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA PQUE. CENTENARIO
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA PQUE. CENTENARIO
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Odeon, Maria Mercedes; Munilla, María Eugenia; Lado, M.; de Fino, Fernanda Teresa; Maidana, Silvina Soledad; et al.; Stress Response at different Ages of Weaning in Cattle; Infogain Publication; International Journal of Environment, Agriculture and Biotechnology; 4; 2-2019; 133-141
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