Changes in ruminal fermentation of fistulated cattle fed with sugar cane as a substitute for corn silage

Authors

  • Edison Valvasori 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 e Alimentação Animal, Nova Odessa, SP
  • Wagner Lavezzo Universidade Estadual Paulista, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Nutrição e Produção Animal, Botucatu, SP
  • Carlos de Sousa Lucci Universidade Estadual Paulista, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Nutrição e Produção Animal, Botucatu, SP
  • Laércio Melotti Universidade Estadual Paulista, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Nutrição e Produção Animal, Botucatu, SP
  • Francisco Stefano Wechsler Universidade Estadual Paulista, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Nutrição e Produção Animal, Botucatu, SP
  • Ari Luís de Castro Universidade Estadual Paulista, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Nutrição e Produção Animal, Botucatu, SP

Keywords:

nutrition, rumen, pH, ammonia nitrogen, volatile fatty acids, ciliate protozoa

Abstract

Four Holstein cows with rumen cannulae were used in a 4 x 4 latin square to evaluate ruminal alterations. The animals received roughage (59.4% in DM basis) composed of corn silage and/or sugar cane on the following proportions: A)1:0; B) 1/3:2/3; C) 2/3:1/3; and D) 0:1. The concentrate participated with 40.6% in the different rations, raising the crude protein level to 15%. Ruminal volume, turn-over rate, pH and concentrations of NH3-N and of total VFA of the ruminal liquid in all treatments were similar (48 l; 11.85%h; 6.32; 8.82mg/100ml and 88.01mM/l respectively). The pH decreased and an increase in N-NH3 concentrations and total VFA concentrations were observed until 3h after presenting the diets. The largest ciliate protozoa population (P<0,10) was observed in rumen of animals receiving only sugar cane, as a sole forage in diet, being 40,85% higher than those receiving just corn silage. Inclusion of higher quantities of sugar cane in diets, led to higher population of ciliate Dasytricha.

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Published

2013-12-02

Issue

Section

ANIMAL NUTRITION

How to Cite

Changes in ruminal fermentation of fistulated cattle fed with sugar cane as a substitute for corn silage. (2013). Bulletin of Animal Husbandry, 58(1), 35-45. http://35.198.24.243/index.php/bia/article/view/1386

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