Effect of intake on the digestibility of complete rations fed to Zebu cattle

Authors

  • Gilberto Braun Instituto de Zootecnia, Seção de Avaliação de Forragens, Nova Odessa, SP
  • Celso Boin Universidade de São Paulo, ESALQ, Departamento de Zootecnia de Ruminantes, Piracicaba, SP
  • Rosana Aparecida Possenti Instituto de Zootecnia, Seção de Avaliação de Forragens, Nova Odessa, SP
  • João José Assumpção de Abreu Demarchi Instituto de Zootecnia, Seção de Criação e manejo de gado de leite, Nova Odessa, SP

Keywords:

digestibility, intake levels, Nellore bulls

Abstract

To study the effect of intake level on the digestibility of complete rations fed to Zebu bulls, three trial were carried out in 1988/89 and three in 1989/90 utilizing three treatments: A - "ad libitum"; B - 70 and C - 55g DM/kg LW0,75. The rations had 60% silage and 40% concentrate, with 12% CP. The dry matter intake and digestibility for the treatments A, B and C were, respectively, 72.4 and 62.6; 64.6 and 64.8; 51.4 and 68.9 in 88/89 and of 86.7 and 68.6; 80.4 and 66.6; 59.5 and 70.9 in 89/90. In 1988/89 the increase in the intake level resultedin linear decrease (P < 0.05) or the digestibility coefficients of all the parameters studied, while in 1989/90 this effect was not significant. On these trials the digestibility coefficient of the A, B and C treatment did not show difference.

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Published

2014-01-14

Issue

Section

ANIMAL NUTRITION

How to Cite

Effect of intake on the digestibility of complete rations fed to Zebu cattle. (2014). Bulletin of Animal Husbandry, 53, 23-27. http://bia.iz.sp.gov.br/index.php/bia/article/view/987

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