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| Freitas Júnior,José Esler de; Rennó,Francisco Palma; Santos,Marcos Veiga dos; Gandra,Jefferson Rodrigues; Maturana Filho,Milton; Venturelli,Beatriz Conte. |
| The objective of this study was to evaluate the use of fat sources in rations for lactating cows on the productive performance and composition of milk protein fraction. Twelve Holstein cows were used, grouped in three balanced 4 × 4 Latin squares, fed with the following rations: control; refined soybean oil; whole raw soybean; and calcium salts of unsaturated fatty acid (Megalac-E). Dry matter and nutrient intake, and daily milk production were evaluated. The samples used to analyze milk composition were collected in two alternate days and were obtained from two daily milking. Milk composition and total nitrogen, non-protein nitrogen and non-casein nitrogen ratios were analyzed. The casein, serum protein and true protein ratios were obtained by difference.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fat supplementation; Intake; Milk production and composition; Non-protein nitrogen; True protein. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000400021 |
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| Rennó,Francisco Palma; Freitas Júnior,José Esler de; Gandra,Jefferson Rodrigues; Maturana Filho,Milton; Verdurico,Lenita Camargo; Rennó,Luciana Navajás; Barletta,Rafael Villela; Vilela,Flávio Garcia. |
| The objective of this study was to evaluate the influence of unsaturated fatty acids in diets for dairy cows during the transition period and early lactation on intake, digestion and nutrient balance. Thirty-six multiparous and pregnant Holstein cows were randomly distributed to receive one of the experimental diets in the period from 35 days before the expected date of parturition to 84 days post-partum. Diets were fed as a total mixed ration and were as follows: control (C); soybean oil (SO), based on inclusion of 30 g/kg (DM basis); and calcium salts of unsaturated fatty acids (CS), based on inclusion of 30 g/kg (DM basis). Pre-partum dry matter intakes (DMI) of cows fed C, SO and CS were 11.9, 9.5 and 9.6 kg/d, respectively. Post-partum DMI was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dry matter intake; Energy balance; Ruminant digestion. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000400212 |
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| Freitas Júnior,José Esler de; Rennó,Francisco Palma; Silva,Luiz Felipe Prada e; Gandra,Jefferson Rodrigues; Maturana Filho,Milton; Foditsch,Carla; Venturelli,Beatriz Conte. |
| O objetivo deste trabalho foi avaliar a utilização de diferentes fontes de gordura nas rações de vacas em lactação e seus efeitos sobre o consumo de matéria seca e as concentrações dos parâmetros sangüíneos. Foram utilizadas 12 vacas da raça Holandês, agrupadas em três quadrados latinos balanceados 4x4 e alimentadas com as seguintes rações: 1) controle; 2) óleo de soja refinado; 3) grão de soja in natura; e 4) sais de cálcio de ácidos graxos (Megalac-E). As concentrações de colesterol total, colesterol, lipoproteína de baixa densidade (LDL) e colesterol de alta densidade (HDL) foram maiores (P<0,05) para as vacas alimentadas com as rações contendo fontes de gordura em relação à ração controle. As concentrações de uréia e nitrogênio ureico no soro foram... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lipídios; Enzimas hepáticas; Perfil metabólico; Lipidograma; Proteinograma. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000400032 |
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