Microbial protein production in dairy cows receiving diets with coffe hull

Authors

  • Fernanda Cipriano Rocha Universidade Federal de Viçosa, Departamento de Zootecnia, Viçosa, MG
  • Rasmo Garcia Universidade Federal de Viçosa, Departamento de Zootecnia, Viçosa, MG
  • Fernando Salgado Bernardino Universidade Federal de Viçosa, Departamento de Zootecnia, Viçosa, MG
  • Acyr Wanderley de Paula Freitas Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de Desenvolvimento Tecnológico dos Agronegócios da Alta Paulista, Adamantina, SP
  • Rilene Ferreira Diniz Valadares Universidade Federal de Viçosa, Departamento de Medicina Veterinária, Viçosa, MG
  • Beatriz de Assis Junqueira Universidade Federal de Viçosa, Departamento de Zootecnia, Viçosa, MG
  • João Paulo Sampaio Rigueira Universidade Federal de Viçosa, Departamento de Zootecnia, Viçosa, MG
  • Gabriel Cipriano Rocha Universidade Federal de Viçosa, Departamento de Zootecnia, Viçosa, MG

Keywords:

allantoin, microbial efficiency, uric acid

Abstract

It was evaluated the microbial production by urine purine derivatives and plasmatic urea concentration (PUC) and urea excretion in lactation cows, receiving diets containing four levels of coffee hulls in total dry matter (0; 6; 12 and 18% of DM), in substitution for corn silage. Twelve Holstein cows were distributed according to the lactation period in three latin squares 4 x 4 Diets were isoproteic, with 15% of crude protein (CP), constituted of 60% of roughage (corn silage and coffee hulls) and 40% of concentrate, in dry matter basis. A linear decrease (P<0.05) were observed for the urinary excretion of alantoin, absorbed purins and microbial nitrogen compounds, being estimated a reduction of 6.48 and 6.51 mM/day and 4.7 g/day with each unit of coffee hulls added, respectively. The estimated uric acid excretion, microbial efficiency and the relation between CP and CP consumption were not influenced (P>0.05) by the coffee hulls levels in the diet, with mean values of 19.06 mM/day; 133.88 g CP/kg of TDN and 54.83, respectively. Plasmatic N-urea and daily urea and N excretion (mg/kg BW and g/day) decreased linearly (P<0.05) with coffee hulls addition, with decreases observed of 0.26 mg/dL, 5.6 g/day, 4.95 mg/ kg BW and 3.08 g/day for each unit of coffee hulls added, respectively. The inclusion of coffee hulls up to 18% on lactation dairy cows diets reduced the alantoin, absorbed purins and microbial compounds production values.

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Published

2013-11-27

Issue

Section

ANIMAL NUTRITION

How to Cite

Microbial protein production in dairy cows receiving diets with coffe hull. (2013). Bulletin of Animal Husbandry, 62(2), 149-156. http://bia.iz.sp.gov.br/index.php/bia/article/view/1306

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