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http://dx.doi.org/10.5713/ajas.2008.80061

Carcass Characteristics, Chemical Composition and Fatty Acid Profile of Longissimus Muscle of Bulls and Steers Finished in a Pasture System Bulls and Steers Finished in Pasture Systems  

Aricetti, Juliana Aparecida (Bachelor in Chemistry, Department of Chemistry, State University of Maringa)
Rotta, Polyana Pizzi (Undergraduate student, Animal Science Department, State University of Maringa)
do Prado, Rodolpho Martin (Undergraduate student, Animal Science Department, State University of Maringa)
Perotto, Daniel (IAPAR. Agronomic Institute of Parana)
Moletta, Jose Luiz (APAR. Agronomic Institute of Parana)
Matsushita, Makoto (Graduate Chemistry Program, State University of Maringa)
do Prado, Ivanor Nunes (Graduate and Undergraduate studies in Animal Science, State University of Maringa)
Publication Information
Asian-Australasian Journal of Animal Sciences / v.21, no.10, 2008 , pp. 1441-1448 More about this Journal
Abstract
This experiment was carried out to study the carcass characteristics, chemical composition and fatty acid profile of the Longissimus muscle (LM) of bulls (10) and steers (17) finished in a pasture system. Animals (1/2 Zebu vs. 1/2 Aberdeen Angus) were fed in a pasture system (Hermatria altissima) and with a supplement of soybean meal, cracked corn, urea, limestone and mineral salts, twice a day. Both animal groups were slaughtered at 27 months of age, with an average 508.88 kg of live weight. Final weight, hot carcass weight and texture were similar (p>0.05) between bulls and steers. Carcass dressing, fat thickness, color and marbling were higher (p<0.02) in steers. Conversely, the Longissimus area was greater (p<0.05) in bulls. Moisture levels were higher (p<0.01) in bulls. Ash, crude protein, total lipids and total cholesterol levels were higher (p<0.10) in steers. C14:0, C16:0, C16:1 n-7 and C18:1 n-9 fatty acids percentages were higher (p<0.06) in steers. C16-1 n-10, i 17:0, C19:0, C18:2 n-6, C18:3 n-3, C20:2 n-3 C20:4 n-6, C20:5 n-3, C22:1 n-7, C22:4 n-6 and C22:5 n-3 fatty acids percentages were higher (p<0.05) in bulls. The percentage of the other fatty acids was similar (p>0.05) in bulls and steers. The levels of monounsaturated fatty acids were higher (p<0.02) in steers while polyunsaturated fatty acids, n-3, n-6, PUFA/SFA and n6:n3 ratios, were higher (p<0.05) in bulls. The CLA contents (mg/g lipids) were similar (p>0.10) in bulls and steers.
Keywords
Beef; Bulls; Chemical Composition; CLA; Longissimus Muscle; Steers;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By Web Of Science : 18  (Related Records In Web of Science)
Times Cited By SCOPUS : 18
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