<b>Performance and carcass characteristics of bulls or steers supplemented or not supplemented during the winter</b> - DOI: 10.4025/actascianimsci.v28i2.648

  • Saulo Malaguido Climaco UEL
  • Edson Luis de Azambuja Ribeiro UEL
  • Ivone Yurita Mizubuti UEL
  • Marco Antônio da Rocha UEL
  • Leandro das Dores Ferreira da Silva UEL
  • Elzânia Sales Pereira UEL
DOI: https://doi.org/10.4025/actascianimsci.v28i2.648

Abstract

Forty Nellore bovines were used. Animals were divided in two groups: 1) SUP – Animals on pasture and supplemented (0.5% of live body weight) with a concentrated during the winter (dry season), and 2) NSU – Animals on pasture, without supplementation. Half of the animals of each treatment was steers and the other half was bulls. Best average daily gain (ADG) during the period of the winter was observed in the supplemented animals (SUP = 0.339; NSU = 0.193 kg), and the animals belonging to the control group (NSU) presented compensatory weight gain in the period of the summer. Bulls had greater ADG during the whole period than steers (0.506 vs. 0.412 kg), and they reached the slaughter weight (480 kg) at a younger age (330 vs. 409 days up to slanghter). Best cold carcass dressing percentage was verified for steers and the supplementation did not promote better carcass characteristics in the tested animals.

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Author Biography

Edson Luis de Azambuja Ribeiro, UEL
EDSON LUIS DE AZAMBUJA RIBEIRO concluiu o doutorado em Ciência Animal - University of Nebraska em 1995. Atualmente é Professor Associado C da Universidade Estadual de Londrina. Publicou 60 artigos em periódicos especializados e 124 trabalhos em anais de eventos. Possui 11 itens de produção técnica. Orientou 4 dissertações de mestrado e co-orientou 2, além de ter orientado 32 trabalhos de iniciação científica e 9 trabalhos de conclusão de curso nas áreas de Zootecnia e Medicina Veterinária. Entre 1989 e 2003 participou de 6 projetos de pesquisa, sendo que coordenou 4 destes. Atualmente participa de 3 projetos de pesquisa, sendo que coordena 1 destes. Atua na área de Zootecnia, com ênfase em Produção Animal. Em suas atividades profissionais interagiu com 269 colaboradores em co-autorias de trabalhos científicos. Em seu currículo Lattes os termos mais freqüentes na contextualização da produção científica, tecnológica e artístico-cultural são: Ovinos, Reprodução, Ganho de peso, Bovinos, Carcaça, Peso, Proteína bruta, Confinamento, Mice e Nutrição Currículo Lattes
Published
2008-02-15
How to Cite
Climaco, S. M., Ribeiro, E. L. de A., Mizubuti, I. Y., Rocha, M. A. da, Silva, L. das D. F. da, & Pereira, E. S. (2008). <b>Performance and carcass characteristics of bulls or steers supplemented or not supplemented during the winter</b&gt; - DOI: 10.4025/actascianimsci.v28i2.648. Acta Scientiarum. Animal Sciences, 28(2), 209-214. https://doi.org/10.4025/actascianimsci.v28i2.648
Issue
Vol 28 No 2 (2006)
Section
Ruminant Nutrition

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