Differencial rumen protozoa counting from steers fed Napier elephant grass (Pennisetum purpureum Schum) at different maturity stages

  • José Carlos Machado Nogueira Filho Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP
  • Carlos de Souza Lucci Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP
  • Laércio Melotti Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP
  • Maria Ely Miserochi de Oliveira Universidade de São Paulo, Instituto de Ciências Biomédicas, São Paulo, SP
  • Cesar Gonçalves de Lima Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP
  • José Aparecido da Cunha Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP
Keywords: Rumen (microbiology), Protozoa, Nutrition of ruminants, Cattle

Abstract

Napier grass (Pennisetum purpureum Schum) in-3 growing stages: a) 1,30 m tall and 17.54% dry matter; b) 2.35 m tall and 25.84% dry matter: and c) 3,25 m tall and 26.31% dry matter, was fed "ad libitum" to eight rumen fistulated steers all crossbred (5/8 european-zebu) weighting 220 kg, being fed 1,5 kg of a concentrate meal with 24.16% of crude protein. Treatments were compared in a completely randonmized design using the 4th week of each experimental period for rumen liquor sampling for differencial counts of the following protozoa: Entodinium, Diplodinium, Eudipiodinium and Polyplastron. Results showed Entodinium as 96.73% of total protozoa and its concentration per mililiter of rumen fluid decreased linearly as the plant matured (a = 18.2 x 104/ml; b = 12.1 x 104/ml; and c = 9.8 x 104/ml).

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Published
1992-12-02
How to Cite
Nogueira Filho, J. C., Lucci, C., Melotti, L., Oliveira, M., Lima, C., & Cunha, J. A. da. (1992). Differencial rumen protozoa counting from steers fed Napier elephant grass (Pennisetum purpureum Schum) at different maturity stages. Brazilian Journal of Veterinary Research and Animal Science, 29(2), 215-221. https://doi.org/10.11606/issn.1678-4456.bjvras.1992.51987
Section
ANIMAL NUTRITION AND NUTRITIONAL DISEASES

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