RUMEN CHARACTERISTICS OF YOUNG BULLS FED DIETS BASED ON GRASS AND COMMERCIAL CONCENTRATE SUPPLEMENTED WITH Hibiscus rosa-sinensis AND Sacharina

Authors

  • Gaspar Pinzón Almeida Campus Tabasco Colegio de Postgraduados
  • Emilio Manuel Aranda-Ibáñez Campus Tabasco Colegio de Postgraduados
  • Jorge Pérez Pérez Campus Tabasco Colegio de Postgraduados
  • Hernández Garay Alfonso Campus Tabasco Colegio de Postgraduados
  • Ives Cláudio da Silva Bueno Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo
  • André César Vitti Pólo Centro Sul - Agência Paulista de Tecnologia dos Agronegócios

DOI:

https://doi.org/10.5216/cab.v12i1.4878

Keywords:

fermentação ruminal, taxa de degradação, degradabilidade

Abstract

Aiming at evaluating hibiscus (Hibiscus rosa-sinensis) and sacharina as supplements for young bulls, four crossbred animals were displayed in a Latin square experimental design. The following treatments were performed: 1 – 75% pasture + 25% concentrate; 2 – 50% pasture + 25% concentrate + 25% hibiscus; 3 – 50% pasture + 25% concentrate + 25% saccharina; and 4 – 25% pasture + 25% concentrate + 25% hibiscus + 25% saccharina. Diet composition, rumen fermentation, DM and CP degradation rates were evaluated. Rumen pH values varied from 5.82 to 6.98, for diets supplemented with hibiscus, at 9h post-feeding, and with saccharina, at the feeding moment. Ammonia N contents did not present great changes when only hibiscus or saccharina were added to the diet, but there was a significant effect when both were added (P<0.001). Rumen SCFA concentrations were lower due to saccharine presence in the diet (P<0.01). Sacharina diet presented higher values for readily soluble fraction for DM and CP (P<0.01). Sacharina promoted a higher effect on DM degradation of total diets (P<0.05). Hibiscus and saccharina inclusion increased the degradation of diets for grazing young bulls (P<0.05). Including these feed to the concentrate, the rumen environment and functionality were improved. Thus, it is viable the partial replacement of concentrate by the tested feed.

KEYWORDS: Rumen fermentation, degradation rate, degradability.

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Published

2011-03-31

How to Cite

ALMEIDA, G. P.; ARANDA-IBÁÑEZ, E. M.; PÉREZ, J. P.; ALFONSO, H. G.; BUENO, I. C. da S.; VITTI, A. C. RUMEN CHARACTERISTICS OF YOUNG BULLS FED DIETS BASED ON GRASS AND COMMERCIAL CONCENTRATE SUPPLEMENTED WITH Hibiscus rosa-sinensis AND Sacharina. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 12, n. 1, p. 26–36, 2011. DOI: 10.5216/cab.v12i1.4878. Disponível em: https://revistas.ufg.br/vet/article/view/4878. Acesso em: 16 aug. 2024.

Issue

Vol. 12 No. 1 (2011)

Section

Animal Production

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