In situ degradability of dry matter, organic matter and crude protein of some feeds in crossbred steers

Authors

  • Jane Maria Bertocco Ezequiel Universidade Estadual Paulista
  • Paulo Sérgio de Azevedo Universidade Estadual Paulista
  • José Carlos Barbosa Universidade Estadual Paulista
  • José Wanderley Cattelan Universidade Estadual Paulista
  • Flávio Dutra de Resende Instituto de Zootecnia - Colina
  • José Renato Caleiro Seixas Indústria Fri-Ribe S.A.
  • Flávio Roberto Gonzaga do Carmo Universidade Estadual Paulista
  • Leandro das Dores Ferreira da Silva Universidade Estadual de Londrina

DOI:

https://doi.org/10.5433/1679-0359.1999v20n1p25

Keywords:

Soybean hulls, Soybean meals, Grain corn, Starea, Poultry by-product, Degradability potential, Effective degradability, Solubility.

Abstract

The objective of this work was to evaluate the in situ degradability of DM, OM and CP in coast-cross hay (CH), soybean hulls (SH), grounded com grain (CG), soybean meal (SBM), poultry by-product meal (PBM) and starea 72 (ST), estimated by nailon bags in the rumen. It was used six crossbred steers (Holstein x Zebu), fed with a total mixed ration (60:40 rougage/concentrate). A 6 X 6 Latin square design was used to study a 2 X 3 factorial arrangement: three protein sources and two SH levels as a replacement for CH. To estimate DM, OM and CP effective degrabability (ED), a passage rate of5%/h was considered. Higher DM, OM and CP solubility for ST were found. DM, OM and CP disappearance for CG and SH were similar. Values of potential degrabability for DM were 54.5; 88.7; 93.4; 97.5; 61.4 and 86.4%; for OM were: 51.8; 88.4; 93.4; 96.6; 66.9 and 87.3%; for CP were: 65.2; 92.1; 95.6; 99.2; 60.5 and 88.1 %; for ED were: 36.1; 53.3; 66.7. 77.4; 54.0 and 76.6%; for DM were: 32.4; 51.1; 65.6; 76.5; 59.1 and 77.2% and for OM were: 51.1; 68.4; 67.8; 79.6; 53.0 and 84.1 %, for CP, CH, SH, CG, SBM, PBM and ST, respectively.

 

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Author Biographies

Jane Maria Bertocco Ezequiel, Universidade Estadual Paulista

 

Professora Doutores da FCAVJ - UNESP, Campus de Jaboticabal – SP.

Paulo Sérgio de Azevedo, Universidade Estadual Paulista

 

Mestrando em Zootecnia da FCAVJ - UNESP - Jaboticabal - SP.

José Carlos Barbosa, Universidade Estadual Paulista

 

Professores Doutores da FCAVJ - UNESP, Campus de Jaboticabal – SP.

José Wanderley Cattelan, Universidade Estadual Paulista

 

Professores Doutores da FCAVJ - UNESP, Campus de Jaboticabal – SP.

Flávio Dutra de Resende, Instituto de Zootecnia - Colina

 

Doutor em Zootecnia, pesquisador do Instituto de Zootecnia - Colina - SP.

José Renato Caleiro Seixas, Indústria Fri-Ribe S.A.

 

Mestre em Zootecnia; Gerente da Indústria de rações Fri-Ribe S.A. - Pitangueiras - SP

Flávio Roberto Gonzaga do Carmo, Universidade Estadual Paulista

 

Aluno de Graduação em Zootecnia da FCAVJ - UNESP - Jaboticabal

Leandro das Dores Ferreira da Silva, Universidade Estadual de Londrina

 

Estudante de Doutorado em Zootenia da FCAVJ - UNESP, Professor da Universidade Estadual de Londrina - PR.

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Published

1999-01-29

How to Cite

Ezequiel, J. M. B., Azevedo, P. S. de, Barbosa, J. C., Cattelan, J. W., Resende, F. D. de, Seixas, J. R. C., … Silva, L. das D. F. da. (1999). In situ degradability of dry matter, organic matter and crude protein of some feeds in crossbred steers. Semina: Ciências Agrárias, 20(1), 25–30. https://doi.org/10.5433/1679-0359.1999v20n1p25

Issue

Vol. 20 No. 1 (1999)

Section

Articles

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