Effects of supplementation of calcium salts of polyunsaturated fatty acids on serum concentrations of progesterone and insulin of pregnant dairy cows
Carregando...
Data
2014-01-01
Autores
Moriel, Philipe [UNESP]
Cappellozza, Bruno Ieda [UNESP]
Ferraretto, Luiz Felipe [UNESP]
Aboin, Augusto Cossolino [UNESP]
Rodrigues Vieira, Fernanda Victor [UNESP]
Rodrigues, Ricardo de Oliveira [UNESP]
Cooke, Reinaldo Fernandes [UNESP]
Vasconcelos, José Luiz Moraes [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Revista Brasileira Zootecnia Brazilian Journal Animal Sci
Resumo
Forty-five non-lactating, pregnant Holstein animals (18 heifers and 27 multiparous cows; BW = 561 +/- 114 kg; BCS = 2.9 +/- 0.3; days pregnant = 110 +/- 56 d) were stratified by initial BW and BCS, and randomly assigned to receive daily (as-fed basis) 0.50 kg of ground corn plus 0.22 kg of kaolin (CON), calcium salts of saturated fatty acids (SFA) or polyunsaturated fatty acids (PF) for 14 d. Blood samples were collected on days 0, 7 and 14, immediately prior to (0 h) and 3, 6, 9 and 12 h after feeding, to determine the serum concentrations of P 4 and insulin. No treatment effects were detected for serum concentrations of P 4 (5.52, 6.13 and 5.63 +/- 0.41 ng/mL for CON, SFA and PF, respectively). No treatment effects were detected for serum concentrations of insulin (11.5, 10.5 and 10.1 +/- 1.43 mu IU/mL for CON, SFA and PF, respectively). Heifers had greater serum concentrations of P 4 than multiparous cows (6.35 vs. 5.16 +/- 0.42 ng/mL), but lower serum concentrations of insulin (7.0 vs. 14.4 +/- 1.49 mu IU/mL). Feeding 0.22 kg of calcium salts of polyunsaturated fatty acids is not sufficient to increase the serum concentrations of P 4 and insulin of non-lactating, pregnant dairy cows.
Descrição
Palavras-chave
hepatic metabolism, linoleic, linolenic, PUFA
Como citar
Revista Brasileira de Zootecnia-brazilian Journal of Animal Science. Vicosa-mg: Revista Brasileira Zootecnia Brazilian Journal Animal Sci, v. 43, n. 1, p. 20-26, 2014.