Nutrients balances and milk fatty acid profile of mid lactation dairy cows supplemented with unsaturated fatty acid
Esler de Freitas Júnior, Jose; Palma Rennó, Francisco; Rodrigues Gandra, Jefferson; Navajás Rennó, Luciana; Henrique Rodrigues, Gustavo; Veiga dos Santos, Marcos; Dal Secco de Oliveira, Mauro.
R. bras. Saúde Prod. Anim.
; 14(2)2013.
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en Inglés
| VETINDEX | ID: vti-717151
The objective was to evaluate the effect of unsaturated fatty acid sources supplementation on nutrients balances and milk fatty acid profile of mid lactation dairy cows. Twelve Brazilian Holstein cows in the mid lactation (mean of 128 days) and (580 ± 20kg of weight; mean ± SD) with milk yield of 25kg/d were assigned randomly into three 4 x 4 Latin square, fed the following diets control (C); refined soybean oil; (SO); whole soybean raw (WS) and; calcium salts of unsaturated fatty acids (CSFA). Milk yield was 26.6; 26.4; 24.1 and 25.7 to the diets CO, SO, WS and CSFA respectively. Cows fed the WS treatment produced less milk (1.95kg/d of milk), fat and lactose than did cows fed the SO and CSFA. Cows fed the CSFA treatment showed less blood, urine (g/d) concentrations of N more energetic efficiency and intake of energy than did cows fed the SO treatment. Cows fed the unsaturated fatty acids sources showed more C182 cis-9, trans-11 CLA and trans-C181 FA concentration in milk than did cows fed the CO treatment. Diets with whole soybeans and soybeans oil provide more efficient digestive processes, and increase milk composition of unsaturated fatty acids.
Biblioteca responsable:
BR68.1
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