Predicting carcass chemical composition of young Nellore bulls / Predição da composição química da carcaça de machos da raça Nelore
Henrique Oliveira Silva, Luiz; Figueiredo Martins Bonilha, Sarah; Noely dos Santos Gonçalves Cyrillo, Joslaine; Eugênia Zerlotti Mercadante, Maria; Helena Branco, Renata; Geraldo Ribeiro, Enilson.
B. Indústr. Anim.;
71: 35-35, 2014.
Artigo
em Inglês
| VETINDEX
| ID: vti-467262
Resumo
The direct determination of carcass composition as experimental routine, despite being the most accurate method, is time consuming, laborious and expensive. Indirect methods have been developed to estimate on quick, simple, economical and reliable ways empty body composition of beef cattle. This study was performed with the objective of developing accurate regression equations to predict carcass composition of Nellore animals using 9-10-11th ribs chemical composition and performance measures as independent variables. Sixty-seven non-castrated Nellore bulls were randomly selected for finishing period in two consecutive years (2008 and 2009) and were finished in individual pens for approximately 100 days, until they reached four millimeters of subcutaneous fat thickness over Longissimus muscle. They were slaughtered at 540 days of average age and body weight at slaughter (BW) and carcass weight (CW) were taken. The 9-10-11th ribs cut was obtained according to Hankins and Howe (1946) and weighted (RW). The carcass composition was obtained after grinding, homogenizing, sampling and analyzing the left side of the carcass. Chemical analysis of 9-10-11th ribs cut and carcass were carried for protein (RP and CP), fat (RF and CF), ashes (RA and CA) and water (RWt and CWt). Stepwise and Mallows Cp options were used in PROC GLMSELECT (SAS Inst., Inc., Cary, NC) to determine significant (O artigo não apresenta resumo em português.
Biblioteca responsável:
BR68.1
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