Data/hora: 08/06/2024 17:46:08

Provedor de dados: | 80
País: | Brazil
Título: | Association between handling stress in the corral and rabies antibody titers in selenium-supplemented cattle
Autores: | Reis,LSLS; Chiacchio,SB; Oba,E; Pardo,PE; Frazatti-Gallina,NM.
Data: | 2009-01-01
Ano: | 2009
Palavras-chave: | Cattle; Cortisol; Stress; Rabies immune response; Selenium supplementation.
Resumo: | This study determined the correlation between serum cortisol levels and rabies antibody titers in cattle primo-vaccinated against rabies and supplemented with dietary selenium (Se). Sixty Nelore male calves (10 to 12 months old) received daily and individual dietary supplementation with 0, 3.6, 5.4 and 6.4 mg Se (groups Gc, G3.6, G5.4 and G6.4, respectively). The animals were vaccinated against rabies (day 0) and subjected to handling stress in the corral for 120 days. Blood sampling procedures were performed on days 0, 15, 30, 60, 90 and 120. Cortisol levels increased until day 90, but had dropped significantly by day 120 (P &lt; 0.01). Rabies antibody titers on days 30 and 90 were similar among Se-supplemented groups; in the control group, rabies antibodies decreased significantly from day 30 to 60, and 90 to 120. Serum cortisol levels and antibody titers were not correlated in most of the groups or blood sampling days. A positive correlation among these variables was found only in G6.4 on days 60 (R = 0.513; P = 0.05) and 120 (R = 0.644; P = 0.009). In conclusion, repeated handling in the corral stresses cattle, but without compromising rabies humoral immune response.
Tipo: | Info:eu-repo/semantics/other
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992009000400015
Editor: | Centro de Estudos de Venenos e Animais Peçonhentos
Relação: | 10.1590/S1678-91992009000400015
Formato: | text/html
Fonte: | Journal of Venomous Animals and Toxins including Tropical Diseases  v.15 n.4 2009
Fonte: | info:eu-repo/semantics/openAccess