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| Mota,Diego Azevedo; Messana,Juliana Duarte; Canesin,Roberta Carrilho; Fiorentini,Giovani; Pires,Alexandre Vaz; Berchielli,Telma Teresinha. |
| The present study was conducted to investigate the effect of alternative true-protein sources to soybean meal, with different ruminal degradability, using a sugarcane-based diet, on nutrient digestion, ruminal fermentation, efficiency of microbial protein synthesis and passage rate in prepubertal dairy heifers. Eight crossbred rumen- and duodenum-cannulated Holstein × Gyr dairy heifers (202.0±11.5 kg BW) were evaluated in a 4 × 4 Latin square experimental design with four treatments and four periods in two simultaneous replicates. Dietary treatments were: soybean meal; cottonseed meal; peanut meal; and sunflower meal. When associated with diets containing sugarcane, the different protein sources did not affect intake or digestibility of dry mater, crude... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microbial synthesis; Nitrogen balance; Rumen degradable protein; Sugarcane. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000200052 |
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| Imaizumi,Hugo; Santos,Flávio Augusto Portela; Bittar,Carla Maris Machado; Correia,Paulo Sérgio; Martinez,Júnio César. |
| Feeding extra protein as an attempt to increase amino acid flux to the intestine may increase lactational performance of dairy cattle. The objective of this study was to compare lactating dairy cow diets containing 16% crude protein (CP), adequate in rumen degradable protein (RDP) and metabolizable protein (MP) according to NRC (2001), with diets containing 17.5% CP. Forty-two Holstein cows (27 primiparous and 15 multiparous, with 172 days in milk) were used in a 3 ´ 3 Latin Square design with 14 replicates. Control diet consisted of 16% CP, adequate in RDP and MP . Crude protein content of diets was increased to 17.5% by feeding extra soybean meal and cottonseed meal (SBCS17.5) to increase diet MP, or extra urea (U-17.5) to increase diet RDP. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cottonseed meal; Metabolizable protein; Protein sources; Rumen degradable protein; Soybean meal. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000100003 |
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