SUPPLEMENTATION WITH PROTEIN SOURCES IN THE FINISHING STAGE OF BEEF HEIFERS: A BIOECONOMICAL STUDY

Authors

  • Rondineli Pavezzi Barbero Universidade Estadual de Londrina
  • Marco Aurélio Alves de Freitas Barbosa Universidade Estadual de Londrina
  • Ana Paula de Souza Fortaleza Universidade Estadual de Londrina
  • Fernando Luiz Massaro Júnior Universidade Estadual de Londrina
  • Leandro das Dores Ferreira da Silva Universidade Estadual de Londrina
  • Letícia Maria de Castro Universidade Estadual de Londrina

DOI:

https://doi.org/10.1590/cab.v17i1.15943

Keywords:

Economy, Animal Nutrition

Abstract

The purpose of this study was to evaluate biological and economically the use of three protein sources (soybean meal (SM), cottonseed (CS) or turnip cake (TC)), in the supplement formulation (1.0 % of body weight (BW)) in the finishing stage of heifers grazing Marandu grass pastures during the dry season. This experiment was conducted in the city of Potirendaba, São Paulo State, and the chemical analyses were performed at the Londrina State University, Paraná State. The experimental area had six hectares, divided into three paddocks, each one with six crossbred heifers (Simmental × Nellore), initial BW of 210 ± 8.34 kg, and age of 15 ± 3 months. Economic analysis was performed using the method of partial budgeting. The experimental design was completely randomized, with six replicates per treatment (n = 18). Analysis of variance was conducted, and means were compared by Tukey test (P <0.05). Animals supplemented with TC exhibited lower weight gain (SM = 0.81, CS = 0.76 and TC = 0.40 kg / animal / day; P <0.05). Negative changes were observed in net income for the CS supplements (US $ -22.15 / animal) and TC (US $ -1.96 / animal) relative to the SM supplement, which showed better biologic and economic results.

Keywords: beef cattle; partial budgets; supplementation.

 

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Author Biographies

Rondineli Pavezzi Barbero, Universidade Estadual de Londrina

Mestrando em Ciência Animal, área de concentração Produção Animal, da Universidade Estadual de Londrina.

Marco Aurélio Alves de Freitas Barbosa, Universidade Estadual de Londrina

Docente do Dep. Zootecnia da Universidade Estadual de Londrina.

Ana Paula de Souza Fortaleza, Universidade Estadual de Londrina

Docente do Dep. Zootecnia da Universidade Estadual de Londrina.

Fernando Luiz Massaro Júnior, Universidade Estadual de Londrina

Doutorando em Ciência Animal da Universidade Estadual de Londrina.

Leandro das Dores Ferreira da Silva, Universidade Estadual de Londrina

Docente do Dep. Zootecnia da Universidade Estadual de Londrina.

Letícia Maria de Castro, Universidade Estadual de Londrina

Mestrando em Ciência Animal da Universidade Estadual de Londrina.

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Published

2016-01-30

How to Cite

BARBERO, R. P.; BARBOSA, M. A. A. de F.; FORTALEZA, A. P. de S.; MASSARO JÚNIOR, F. L.; DA SILVA, L. das D. F.; CASTRO, L. M. de. SUPPLEMENTATION WITH PROTEIN SOURCES IN THE FINISHING STAGE OF BEEF HEIFERS: A BIOECONOMICAL STUDY. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 17, n. 1, p. 45–50, 2016. DOI: 10.1590/cab.v17i1.15943. Disponível em: https://revistas.ufg.br/vet/article/view/15943. Acesso em: 19 may. 2024.

Issue

Vol. 17 No. 1 (2016)

Section

Animal Production

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