Combinations of starch and nitrogen sources in high and low ruminal degradability evaluated by <em>in situ</em> technique

  • Lúcia Maria Zeoula UEM
  • Andrea Cristiane Michelan UEM
  • Fábio Luiz Fregadolli UEM
  • Júlio Cesar Damasceno UEM
  • Ivanor Nunes do Prado UEM
  • Daniele Fridrich UEM
  • Reinaldo Gomes de Morais UEM
DOI: https://doi.org/10.4025/actascianimsci.v20i0.4368

Abstract

The objective of this paper was to evaluate the ruminal degradability of four isonitrogenized and isoenergetic concentrates which differed as for starch and nitrogen sources. Three holstein cows with 530kg average weight and fistulated rumen were used in this investigation. The concentrates formulated with starch and nitrogen sources of high ruminal degradability presented higher values of drymatter, crude protein and starch effective degradability (ED) for 2%/h, 5%/h and 8%/h passage rates, but the reverse was also observed for concentrates with starch and nitrogen sources of low ruminal degradability. The concentrates formulated by alternating starch and nitrogen sources of high and low ruminal degradability showed dry matter and protein ED intermediate values. The starch ED was influenced by the starch source independently of the nitrogen source.

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Author Biography

Lúcia Maria Zeoula, UEM
Possui graduação em Zootecnia pela Universidade Estadual Paulista Júlio de Mesquita Filho (1980), mestrado em Zootecnia pela Universidade Federal de Viçosa (1983) e doutorado em Zootecnia pela Universidade Federal de Viçosa (1990). Atualmente é professor titular da Universidade Estadual de Maringá, Conselheiro - Acta Scientiarum (UEM) e - Revista Brasileira de Zootecnia / Brazilian Journal of Animal Science. Tem experiência na área de Zootecnia, com ênfase em Nutrição e Alimentação Animal, atuando principalmente nos seguintes temas: fontes de amido, resíduos agroindustria, aditivos, digestibilidade, desempenho, degradabilidade Currículo Lattes
Published
2008-07-16
How to Cite
Zeoula, L. M., Michelan, A. C., Fregadolli, F. L., Damasceno, J. C., Prado, I. N. do, Fridrich, D., & Morais, R. G. de. (2008). Combinations of starch and nitrogen sources in high and low ruminal degradability evaluated by <em>in situ</em&gt; technique. Acta Scientiarum. Animal Sciences, 20, 325-332. https://doi.org/10.4025/actascianimsci.v20i0.4368
Issue
Vol 20 (1998)
Section
Zootecny

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