Publicação: Effect of environmental temperature on immune response of broilers
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Poultry Science Assoc Inc
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Resumo
Several studies demonstrate that environmental temperature can influence the immune response of poultry. The objective of this research was to determine at which stage in the life of a bird this effect is greatest. In experiment 1, broiler breeder eggs were incubated at three different temperatures (36.8+/-0.2, 37.8+/-0.2, and 38.8+/-0.2degreesC from the 13th day of incubation to hatching. After hatching, birds were raised in thermoneutral temperature. In experiment 2, 144 1-d-old broiler chicks were distributed into three environmental chambers with different temperatures (18+/-2, 24+/-2, and 32+/-2degreesC). In both experiments, the humoral immune responses to Newcastle disease virus (NDV) and infectious bursal disease (IBDV) were evaluated. NDV and IBDV antibody titers were not significantly different (P > 0.05) among treatments.
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broiler, Temperatura, humoral immunity
Idioma
Inglês
Como citar
Journal of Applied Poultry Research. Savoy: Poultry Science Associação Inc., v. 12, n. 3, p. 247-250, 2003.
