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| Queiroz,Maria Fernanda Soares; Berchielli,Telma Teresinha; Signoretti,Ricardo Dias; Ribeiro,Andressa Ferreira; Morais,Juciléia Aparecida da Silva. |
| The objective of this study was to evaluate the effect of increasing levels of crude protein (CP) in the diet (13, 15, 19 and 22 g/100 g of dry matter, DM) on the metabolism and ruminal parameters of crossbred heifers fed forage sugarcane. Four crossbred Holstein × Gir heifers of average initial weight of 200 kg and average age of 14 months were used. The experimental design was in a 4 × 4 latin square. The intake values of DM, organic matter (OM), neutral detergent fiber (NDF) and non-fibrous carbohydrates (NFC) were not affected by the protein contents of the diet. The apparent and ruminal digestibility of DM and OM were affected by the protein content of the diet. Greater total apparent digestibility coefficient of CP (0.749) was observed for the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Digestibility; Microbial synthesis; Plasma urea; Protein fractionation. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000900019 |
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| Lima, Hellen Leles; Universidade Federal da Grande Dourados; Goes, Rafael Henrique de Tonissi e Buschinelli de; Universidade Federal da Grande Dourados; Oliveira, Euclides Reuter de; Universidade Federal da Grande Dourados; Gressler, Maria Gizelma de Menezes; Universidade Federal da Grande Dourados; Brabes, Kelly Cristina da Silva; Universidade Federal da Grande Dourados; Gabriel, Andrea Maria de Araújo; Universidade Federal da Grande Dourados. |
| Four steers in individual paddocks with Marandu grass (B. Brizantha) in 4x4 square design were used to evaluate sunflower crushed supplementation in pasture-grazing animals on nitrogen balance and microbial protein synthesis. Supplements at 6 g kg-1 body weight comprised corn, soybean meal, and mineral and soybean meal substituted at proportions 0, 20, 40 and 60%. Diet contained averages 6.79, 6.96, 7.10 and 6.87% nitrogen respectively for substitution levels 0, 20, 40 and 60%. The inclusion of sunflower crushed (SC) increased nitrogen intake and fecal excretion of nitrogen while providing a positive balance. Animals’ plasma urea concentration supplemented with SC was 28.13% lower than that of supplemented animals without SC. SC inclusion did not change... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.04.04.01-6 creatinine; Microbial efficiency; Plasma urea; Purine derivatives; Urea Creatinine; Microbial efficiency; Plasma urea; Purine derivatives; Urea. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18654 |
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