Ruminal degradability in dry and lactating cows, with 70% or 50% of roughage as dry matter diets

Authors

  • Carlos de Sousa Lucci Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Nutrição e Produção Animal, Pirassununga, SP
  • Laércio Melotti Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Nutrição e Produção Animal, Pirassununga, SP
  • Vanessa Kodaira
  • Ari Luiz de Castro Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Nutrição e Produção Animal, Pirassununga, SP
  • Paulo Henrique Mazza Rodrigues Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Nutrição e Produção Animal, Pirassununga, SP

DOI:

https://doi.org/10.1590/S1413-95961998000300007

Keywords:

Roughage, Dairy cows

Abstract

Four dry and four lactating Holstein heifers, received the following treatments to evaluate rumen degradabilities of soybean meal, rice meal, coast cross hay and sugar cane, through a dacron bag in situ technique: A = 70% roughage diet; dry cows; B = 70% roughage diet, lactating cows; C = 50% roughage diet, dry cows and D = 50% roughage diet, lactating cows. A randomized block design was used and the treatments had four repetitions in different times. Dry cows presented a higher degradability rate for soybean meal, coast cross hay and sugar cane than lactating females. Lactating cows consumed 40% more dry matter than the dry ones and presented higher rumen liquid turn-over. Coast cross hay and sugar cane were better digested with 70% roughage diets, than with the 50% roughage diets.

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Published

1998-01-01

Issue

Section

ZOOTECHNICS

How to Cite

Ruminal degradability in dry and lactating cows, with 70% or 50% of roughage as dry matter diets. (1998). Brazilian Journal of Veterinary Research and Animal Science, 35(3), 127-133. https://doi.org/10.1590/S1413-95961998000300007