INTAKE, DIGESTIBILITY AND PERFORMANCE OF BEEF CATTLE RECEIVING DIETS CONTAINING UREA IN DIFFERENT PROPORTIONS

Authors

  • Odilon Gomes Pereira Universidade Federal de Viçosa
  • Viviane Glaucia de Souza
  • Sebastião de Campos Valadares Filho Universidade Federal de Viçosa
  • Dalton Henrique Pereira Universidade Federal de Viçosa
  • Karina Guimarães Ribeiro Universidade Federal dos Vales do Jequitinhonha e Mucurí
  • Paulo Roberto Cecon Universidade Federal de Viçosa

DOI:

https://doi.org/10.5216/cab.v9i3.643

Keywords:

Produção de bovinos

Abstract

Intake, apparent digestibility of nutrients, daily gain, feed conversion and the carcass yield in beef cattle receiving diets containing 0; 0.5; 1.0 e 1.5% of urea in total dry matter were evaluated. Twenty four crossed steers Holstein x Zebu (HxZ), castrated, with initial mean body weight of 290 kg were distributed in a completely randomized design. Sorghum silage was used as roughage adopting relation roughage:concentrate of 70:30 in dry matter basis. In order to determine the fecal excretion, indigestible acid detergent fiber was used as a marker. Intake and digestibility of nutrients were not influenced (P>0.05) by the proportions of urea in the diets. For intake and apparent digestibility of dry matter, mean values of 8.42 kg/day or 2.33% of BW and 64.52% were registered, respectively. Mean daily gain (1.05kg), feed conversion (8.07) and carcass yield (48.72%) were not influenced (P>0.05) by the proportions of urea in the diets. Levels of 1.5% of urea in dry matter of total diet can be used in the preparation of diets for finishing beef cattle (HxZ), without compromising intake and digestibility of nutrients and the animal performance as well.

KEY WORDS: Carcass yield, feed conversion, feedlot, sorghum silage.

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Author Biographies

Odilon Gomes Pereira, Universidade Federal de Viçosa

Professor Associado do Departamento de Zootecnia da UFV, bolsista do CNPq

Viviane Glaucia de Souza

Doutora em Zootecnia/UFV

Sebastião de Campos Valadares Filho, Universidade Federal de Viçosa

Professor Titular do Departamento de Zootecnia da UFV, bolsita do CNPq

Dalton Henrique Pereira, Universidade Federal de Viçosa

Doutorando do Departamento de Zootecnia da Universidade Federal de Viçosa. Bolsista do CNPq

Karina Guimarães Ribeiro, Universidade Federal dos Vales do Jequitinhonha e Mucurí

Professora Adjunta do Departamento de Zootecnia da UFVJM

Paulo Roberto Cecon, Universidade Federal de Viçosa

Professor do Departamento de Informática da UFV

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Published

2008-10-14

How to Cite

PEREIRA, O. G.; DE SOUZA, V. G.; VALADARES FILHO, S. de C.; PEREIRA, D. H.; RIBEIRO, K. G.; CECON, P. R. INTAKE, DIGESTIBILITY AND PERFORMANCE OF BEEF CATTLE RECEIVING DIETS CONTAINING UREA IN DIFFERENT PROPORTIONS. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 9, n. 3, p. 552–562, 2008. DOI: 10.5216/cab.v9i3.643. Disponível em: https://revistas.ufg.br/vet/article/view/643. Acesso em: 17 jul. 2024.

Issue

Vol. 9 No. 3 (2008)

Section

Animal Production

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