Effects of Leucaena and yeast in diets to cattle on rumen degradability and in vitro digestibility

Authors

  • Rosana Aparecida Possenti Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Centro de Pesquisa e Desenvolvimento em Nutrição Animal e Pastagem, Nova Odessa, SP
  • Raul Franzolin Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Pirassununga, SP
  • Eliana Aparecida Schammass
  • Patrícia Brás Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Nova Odessa, SP

Keywords:

leguminous, Leucaena leucocephala, Sachacaromyces cerevisae, rumen

Abstract

The aim of the present research was to evaluate the effect of use of Leucaena in catlle diets with or without addition of yeast (Saccharomyces cerevisiae) on dry matter intake (DMI), in situ degradability and in vitro digestibility of leucaena (Leucaena leucocephala (Lam.) de Wit.) and coast-cross grass hays (Cynodon dactylon cv. coast-cross) and rumen liquid outflow rate. Four crossbred rumen cannulated steers were assigned in a Latin square design (4x4) with the treatments in a factorial arrangement (2x2) with two levels of leucaena (20% and 50% DM) with coast-cross grass hay, with or without addition of 10g of yeast/animal/day No differences were observed among the treatments for the DMI, rumen liquid outflow rate, ruminal degradability of DM, NDF and CP. However, leucaena overall had lower rumen degradability of DM, NDF and CP than coast-cross grass. In vitro DM digestibility on both hays was decreased at the higher level of dietary leucaena. The addition of yeast to the diet with 50% of leucaena produced positive effect on in vitro DM digestibility at 24 and 48h of digestion in the coast-cross grass and in leucaena, respectively. However, digestibility of leucaena was decreased during hydrochloric acid and pepsin incubation which simulates the chemical digestion in ruminants.

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Published

2009-01-14

Issue

Section

ANIMAL NUTRITION

How to Cite

Effects of Leucaena and yeast in diets to cattle on rumen degradability and in vitro digestibility. (2009). Bulletin of Animal Husbandry, 66(1), 21-31. http://bia.iz.sp.gov.br/index.php/bia/article/view/1104

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