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- Title
EFEITO HETERÓTICO NAS PARTES NÃO-INTEGRANTES A CARCAÇA DE NOVILHOS TERMINADOS EM ONFINAMENTO.
- Authors
CATTELAM, JONATAS; BRONDANI, IVAN LUIZ; ALVES FILHO, DARI CELESTINO; ARGENTA, FLÂNIA MÔNEGO; SIQUEIRA JUNIOR, VICENTE; MARTINI, PATRÍCIA MACHADO
- Abstract
The objective of this study was to evaluate the heterotic effect on non-integrant parts of carcass from steers of the breeds Charolais (Ch) and Nellore (Ne) and crossbreeds from fifth (21/32Ch 11/32Ne; 21/32Ne 11/32Ch) and sixth (43/64Ch 21/64Ne; 43/64Ne 21/64Ch) generation, finished in feedlot. The heterotic effect was positive for slaughter weight, empty body weight in both generations, head in fifth (1.29 kg) and sixth (1.04 kg) generation and ears in fifth generation (0.17 kg). There was a heterotic effect on fifth and sixth generation for rumen-reticule and intestines, respectively, and abomasum on fifth generation. In absolute weight, a heterotic effect was observed on fifth generation for heart, lungs, kidneys and spleen (0.14; 0.11; 0.55 and 0.16 kg, respectively) and lungs in sixth generation (0.61 kg). The heterotic effect was positive for fats of heart, kidney and digestive tract in both generations and for inguinal fat in sixth generation. In relation to empty body weight, there were heterotic effects for rawhide, in both generations, ears in fifth generation, and heart fat and blood in sixth generation. The crossbred steers showed higher weights for different external compounds in relation to purebred Charolais or Nellore.
- Subjects
BEEF cattle breeding; HETEROSIS; BEEF carcasses; BEEF cattle physiology; SPECIES hybridization
- Publication
Ciência Animal Brasileira, 2014, Vol 15, Issue 2, p174
- ISSN
1518-2797
- Publication type
Article
- DOI
10.1590/1809-6891v15i228081