Effects of supplementation of calcium salts of polyunsaturated fatty acids on serum concentrations of progesterone and insulin of pregnant dairy cows

AUTOR(ES)

Moriel, Philipe, Cappellozza, Bruno Ieda, Ferraretto, Luiz Felipe, Aboin, Augusto Cossolino, Vieira, Fernanda Victor Rodrigues, Rodrigues, Ricardo de Oliveira, Cooke, Reinaldo Fernandes, Vasconcelos, José Luiz Moraes

FONTE

R. Bras. Zootec.

DATA DE PUBLICAÇÃO

2014-01

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 P4 and insulin. No treatment effects were detected for serum concentrations of P4 (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 µIU/mL for CON, SFA and PF, respectively). Heifers had greater serum concentrations of P4 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 µIU/mL). Feeding 0.22 kg of calcium salts of polyunsaturated fatty acids is not sufficient to increase the serum concentrations of P4 and insulin of non-lactating, pregnant dairy cows.

Documentos Relacionados

• Production, Composition, Fatty Acids Profile and Stability of Milk and Blood Composition of Dairy Cows Fed High Polyunsaturated Fatty Acids Diets and Sticky Coffee Hull
• Effects of dietary omega-3 polyunsaturated fatty acids on brain gene expression
• Effects of changes in acid base and calcium concentration on fasting serum insulin, proinsulin, and glucose concentrations.
• Inhibitory effects of polyunsaturated fatty acids on Kv4/KChIP potassium channels
• Polyunsaturated fatty acids modulate sodium and calcium currents in CA1 neurons.