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| Calomeni,Gustavo Delfino; Gardinal,Rodrigo; Venturelli,Beatriz Conte; Freitas Júnior,José Esler de; Vendramini,Thiago Henrique Annibale; Takiya,Caio Seiti; Souza,Heraldo Namorato de; Rennó,Francisco Palma. |
| ABSTRACTThe objective of this experiment was to quantify the effects of feeding polymer-coated slow-release urea on nutrient intake and total tract digestion, milk yield and composition, nutrient balances, ruminal fermentation, microbial protein synthesis, and blood parameters in dairy cows. Sixteen Holstein cows (580±20 kg of live weight (mean ± standard deviation); 90 to 180 days in milk (DIM); and 28 kg/d of average milk yield) were used in a replicated 4 × 4 Latin square experimental design. The animals were assigned to each square according to milk yield and DIM. The animals were randomly allocated to receive one of the following experimental diets: 1) control (without urea addition); urea (addition of 1% on the diet DM basis); polymer-coated slow... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nitrogen balance; Nitrogen efficiency; Non-protein nitrogen. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000900327 |
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| Rennó,Francisco Palma; Freitas Júnior,José Esler de; Gandra,Jefferson Rodrigues; Verdurico,Lenita Camargo; Santos,Marcos Veiga dos; Barletta,Rafael Villela; Venturelli,Beatriz Conte; Vilela,Flávio Garcia. |
| The objective of this study was to evaluate the utilization of different sources of unsaturated long-chain fatty acids in diets for dairy cows during the transition period and early lactation on the milk fatty acid profile and composition of the protein fraction. Thirty-six Holstein cows were divided into three groups, fed the following diets: control (C); soybean oil (SO); and calcium salts of long-chain unsaturated fatty acids (CS). The milk samples utilized for analysis were obtained weekly from parturition to twelve weeks of lactation; each one of the samples originated from two daily milkings. Milk composition and total nitrogen, non-protein nitrogen and non-casein nitrogen levels were analyzed. The cows receiving the diet with calcium salts had lower... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calcium salts of fatty acids; Corn silage; Soybean oil. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013001100008 |
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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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| Vilela,Flávio Garcia; Zanetti,Marcus Antonio; Saran Netto,Arlindo; Freitas Júnior,José Esler de; Rennó,Francisco Palma; Venturelli,Beatriz Conte; Canaes,Taissa de Souza. |
| This research was conducted with objective to evaluate the effect of different zinc (Zn) sources and doses in the diet for Santa Ines sheep. Forty lambs at weaning, with 18.4 kg of body weight were supplemented with three different sources of zinc (zinc oxide (ZnO), zinc amino acid and zinc proteinate) and three doses of zinc (200, 400 and 600 mg/kg DM) added to the basal diet. At every 28 days, animals were weighted and blood samples were collected for analyses of zinc (Zn), alkaline phosphatase and immunoglobulin G (IgG) and M (IgM). At the end of experiment, liver samples were collected for determination of the hepatic zinc levels. Zinc was analyzed with atomic absorption spectrophotometer, while phosphatase alkaline and immunoglobulins G and M were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioavailability; Immunoglobulin; Lambs; Minerals. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000900023 |
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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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