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Avaliaçao das sub-fraçoes dos carboidratos e das proteínas, usando a metodologia do CNCPs e "in situ" com bovinos da raça Nelore. III. Milho

By: Contributor(s): Material type: ArticleArticleLanguage: Portuguese Description: p. 311-313Subject(s): LOC classification:
  • SB 193 .3 .B7 A5
 In: In:Barcellos, Alexandre de Oliveira; Mariante, Arthur da S.; Rocha, Carlos Magno Campos da; Leite, Gilberto Gonçalves (eds.). Reuniao Anual da Sociedade Brasileira de Zootecnia (32, 1995, Brasília, Brasil). AnaisSummary: To verify the use the Cornell Net Carbohydrate and Protein System" (CNCPS) under Brazilian conditions the bromatological composition of corn grain and the potencial and effective degradability and degradation rates, of the subfractional carbohydrate and protein, were determined, in diets with roughage:concentrate ratio of 80:20 (D 1) and 60:40 (D2). Four nelore, castrated males with an average weight of 520 kg were used. Corn grain samples of 5,5 9 were grounded in 2 mm and put in nylon bags of 7 x 14 cm, and incubated in the rumen for 2, 4, 6, 12, 24 e 48h. The level of 40 percent of concentrate caused: increase of potentially degradable MS (P less than 0,05); and higher values for degradation rates of DM, CP and starch. There was an diet effect (P less than 0,05) on corn EDDM when lag time was not considered. This resulted in an 10 percent increase in D2. Furthermore, the use of lag time significantly increased (P less than 0,05) EDDM in D1 by 22,6 percent and 18 percent in D2. The CP degradability was high when compared with the literature and with CNCPS, while the starch degradability was lower than the one considered by the model
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To verify the use the Cornell Net Carbohydrate and Protein System" (CNCPS) under Brazilian conditions the bromatological composition of corn grain and the potencial and effective degradability and degradation rates, of the subfractional carbohydrate and protein, were determined, in diets with roughage:concentrate ratio of 80:20 (D 1) and 60:40 (D2). Four nelore, castrated males with an average weight of 520 kg were used. Corn grain samples of 5,5 9 were grounded in 2 mm and put in nylon bags of 7 x 14 cm, and incubated in the rumen for 2, 4, 6, 12, 24 e 48h. The level of 40 percent of concentrate caused: increase of potentially degradable MS (P less than 0,05); and higher values for degradation rates of DM, CP and starch. There was an diet effect (P less than 0,05) on corn EDDM when lag time was not considered. This resulted in an 10 percent increase in D2. Furthermore, the use of lag time significantly increased (P less than 0,05) EDDM in D1 by 22,6 percent and 18 percent in D2. The CP degradability was high when compared with the literature and with CNCPS, while the starch degradability was lower than the one considered by the model eng

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