| Registro completo |
| Provedor de dados: |
Scientia Agricola
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| País: |
Brazil
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| Título: |
Ultrasonography as a predicting tool for carcass traits of young bulls
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| Autores: |
Suguisawa,Liliane
Mattos,Wilson Roberto Soares
Oliveira,Henrique Nunes de
Silveira,Antônio Carlos
Arrigoni,Mário de Beni
Haddad,Cláudio Maluf
Chardulo,Luis Artur Loyola
Martins,Cyntia Ludovico
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| Data: |
2003-12-01
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| Ano: |
2003
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| Palavras-chave: |
Beef cattle
Ribeye area
Fat thickness
Growth
Cross breeds
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| Resumo: |
Considerable resources have been allocated to support research in the development of non-invasive and non-destructive techniques for carcass composition and quality evaluation. Ultrasonography is a reliable and relatively low-cost technique that can be used. In the present study, real-time ultrasonography was used to predict ribeye area (REA) and subcutaneous fat thickness (FT) in live animals as compared to carcass measurements. Animals used were 115 yearling bull calves (initial body weight, 329 kg), kept under feedlot conditions, of four genetic groups (30, ½ Angus x Nellore; 30, ½ Canchim x Nellore; 30, ½ Simmental x Nellore, and 25 Nellore), and two finishing frame sizes (small and large). Four ultrasonographic measurements were taken every 28 days until slaughter. Predictive precision of ultrasonographic measurements increased as animals approached slaughter, reaching maximum values at the last measurement (R²=0.68 and 0.82 for REA and FT, respectively). FT carcass measurements was influenced by genetic group and live measurements (P < 0.05). Frame size did not influence REA and FT, probably due to small, but distinctive differences among genetic groups.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400026
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| Editor: |
São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
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| Relação: |
10.1590/S0103-90162003000400026
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| Formato: |
text/html
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| Fonte: |
Scientia Agricola v.60 n.4 2003
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| Direitos: |
info:eu-repo/semantics/openAccess
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