Genetic group and heterosis on morphometric measurements during the growth of male beef cattle

Autores/as

  • Ricardo Zambarda Vaz Universidade Federal de Pelotas
  • João Restle Universidade Federal de Goiás
  • Paulo Santana Pacheco Universidade Federal de Santa Maria
  • Fabiano Nunes Vaz Universidade Federal de Santa Maria
  • Luiz Danilo Muehlmann Instituto EMATER
  • Dari Celestino Alves Filho Universidade Federal de Santa Maria
  • Régis Luis Missio Universidade Tecnológica Federal do Paraná
  • Marcia Bitencourt Vaz Universidade Federal de Pelotas

DOI:

https://doi.org/10.5433/1679-0359.2016v37n4Supl1p2759

Palabras clave:

Bos taurus Taurus, Bos taurus indicus, Charolais, Crosbreeding, Morphometric measurements, Nellore.

Resumen

In the present study, the effects of genetic group and heterosis on body measurements of purebreds (Charolais - C and Nellore - N), first-generation crossbreds (G1) (1/2C1/2N and 1/2N1/2C), and second-generation crossbreds (G2) (3/4C1/4N and 3/4N1/4C) males from rotational crossbreeding were evaluated at 8, 12, 18, and 24 months of age. Among the purebreds, the Nellore displayed greater rump height than the Charolais. The Charolais had greater thoracic perimeter than the Nellore, however this difference decreased gradually with advancing age, being equal between the two genetic groups at 24 months. For width of the rump, ischial opening and thoracic perimeter crossbred animals showed higher values than the purebred animals at all ages, but less pronounced at eight months of age. For all morphometric measurements, with exception of rump height, the differences of crossbreds males in relation to the purebreds, were more evident in relation to the Nellore. Heterosis was significant for morphometric measurements in male beef cattle. Morphometric measurements showed high correlation with each other and with body weight, thereby indicating that they are good indicators of body development.

Biografía del autor/a

Ricardo Zambarda Vaz, Universidade Federal de Pelotas

Prof., Departamento de Zootecnia, Faculdade de Agronomia, Universidade Federal de Pelotas, UFPEL, Pelotas, RS, Brasil.

João Restle, Universidade Federal de Goiás

Prof., Programa de Pós-Graduação em Zootecnia, Universidade Federal de Goiás, UFG, Goiânia, GO, Brasil.

Paulo Santana Pacheco, Universidade Federal de Santa Maria

Prof., Departamento de Zootecnia, Universidade Federal de Santa Maria, UFSM, Santa Maria, RS, Brasil.

Fabiano Nunes Vaz, Universidade Federal de Santa Maria

Prof., Departamento de Educação Agrícola e Extensão Rural, UFSM, Santa Maria, RS, Brasil.

Luiz Danilo Muehlmann, Instituto EMATER

Pesquisador, Instituto EMATER, Curitiba, PR, Brasil.

Dari Celestino Alves Filho, Universidade Federal de Santa Maria

Prof., Departamento de Zootecnia, Universidade Federal de Santa Maria, UFSM, Santa Maria, RS, Brasil.

Régis Luis Missio, Universidade Tecnológica Federal do Paraná

Prof., Departamento de Zootecnia, Universidade Tecnológica Federal do Paraná, UTFPR, Pato Branco, PR, Brasil.

Marcia Bitencourt Vaz, Universidade Federal de Pelotas

Discente do Curso de Mestrado, Programa de Pós-Graduação em Zootecnia, UFPEL, Pelotas, RS, Brasil.

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Publicado

2016-09-02

Cómo citar

Vaz, R. Z., Restle, J., Pacheco, P. S., Vaz, F. N., Muehlmann, L. D., Alves Filho, D. C., … Vaz, M. B. (2016). Genetic group and heterosis on morphometric measurements during the growth of male beef cattle. Semina: Ciências Agrárias, 37(4Supl1), 2759–2772. https://doi.org/10.5433/1679-0359.2016v37n4Supl1p2759

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