Feedlot finishing cull cows fed diets with different levels of concentrate

Authors

  • Ivan César Furmann Moura Universidade Tecnológica Federal do Paraná
  • Fernando Kuss Universidade Tecnológica Federal do Paraná
  • José Luis Moletta Instituto Agronômico do Paraná
  • Daniel Perotto Instituto Agronômico do Paraná
  • Maryon Guilherme Strack Fundação ABC
  • Luis Fernando Glasenapp de Menezes Universidade Tecnológica Federal do Paraná

DOI:

https://doi.org/10.5433/1679-0359.2013v34n1p399

Keywords:

Carcass, Conformation, Dry matter intake, Female cattle, Weight gain.

Abstract

The purpose of this study was to evaluate the performance and carcass quality and beef and cull cow subjected to diets with two levels of concentrate (1.08 and 1.62% of body weight, whith base in dry matter) durind the feedlot finishing. In this study were used twenty cull cows of the breed Aberdeen Angus, Charolais, Caracu, Canchim and Charolais x Caracu whith a mean age of 7.2 years. The average weight gain during the termination was similar between levels 1.08 and 1.62% (1.81 and 2.00 kg/day, respectively). However, animals in the 1.62% group consumed much digestible energy (46.13 Mcal / day) compared to the lowest level (38.32 Mcal / day), showing similarity (P > 0.01) in the values of conversion food (6.78 and 6.93 kg dry matter / kg weight gain) and energy efficiency (21.68 and 23.40) between the two groups. In feedlot finishing cull cows with an average age of 7.5 years, the increase of the concentrate from 1.08 to 1.62% of body weight based on dry matter based on corn silage, no benefits productive performance of cows nor the quality characteristics of meat. Increasing the concentrate level in the diet of this category can cause greater haunch thickness and better carcass conformation in feedlot finishing.

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Author Biographies

Ivan César Furmann Moura, Universidade Tecnológica Federal do Paraná

Discente de Mestrado do Programa de Pós Graduação em Zootecnia, Universidade Tecnológica Federal do Paraná, UTFPR, Campus Dois Vizinhos, Dois Vizinhos, PR.

Fernando Kuss, Universidade Tecnológica Federal do Paraná

Prof. do Programa de Pós Graduação em Zootecnia, UTFPR, Campus Dois Vizinhos, Dois Vizinhos, PR.

José Luis Moletta, Instituto Agronômico do Paraná

Pesquisador da área de Produção e Melhoramento Animal, Instituto Agronômico do Paraná, IAPAR, Fazenda Modelo, Ponta Grossa, PR.

Daniel Perotto, Instituto Agronômico do Paraná

Pesquisador da área de Produção e Melhoramento Animal, Instituto Agronômico do Paraná, IAPAR, Fazenda Modelo, Ponta Grossa, PR.

Maryon Guilherme Strack, Fundação ABC

Zootecnista, Pesquisadora do Setor de Forragicultura, Fundação ABC. Castro, PR.

Luis Fernando Glasenapp de Menezes, Universidade Tecnológica Federal do Paraná

Prof. do Programa de Pós Graduação em Zootecnia, UTFPR, Campus Dois Vizinhos, Dois Vizinhos, PR.

Published

2013-03-05

How to Cite

Moura, I. C. F., Kuss, F., Moletta, J. L., Perotto, D., Strack, M. G., & Menezes, L. F. G. de. (2013). Feedlot finishing cull cows fed diets with different levels of concentrate. Semina: Ciências Agrárias, 34(1), 399–408. https://doi.org/10.5433/1679-0359.2013v34n1p399

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