The effect of feeding system on slaughter-carcass characteristics, meat quality, and fatty acid composition of lambs

The effect of feeding system on slaughter-carcass characteristics, meat quality, and fatty acid composition of lambs

In this study, we aimed to determine the slaughter-carcass characteristics, meat quality, and fatty acid composition in lambs raised under intensive and extensive conditions. The animal material consisted of 30 Norduz male lambs, with an average age of 171 days. The lambs were divided into two group...

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Bibliographic Details
Published in:Archiv für Tierzucht Vol. 59; no. 1; pp. 121 - 129
Main Authors: Karaca, Serhat, Yılmaz, Ayhan, Kor, Aşkın, Bingöl, Mehmet, Cavidoğlu, Ä°sa, Ser, Gazel
Format: Journal Article
Language:English
Published: Gottingen Copernicus GmbH 01-03-2016
Copernicus Publications
Subjects:
Animal feeding and feeds
Carbon monoxide
Carcasses
Composition
Dietary supplements
Fatty acid composition
Fatty acids
Food and nutrition
Lambs
Meat
Meat quality
Muscles
Pasture
Physiological aspects
Polyunsaturated fatty acids
Principal components analysis
Proteins
Slaughter
Zoological research
United States > US
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Summary:In this study, we aimed to determine the slaughter-carcass characteristics, meat quality, and fatty acid composition in lambs raised under intensive and extensive conditions. The animal material consisted of 30 Norduz male lambs, with an average age of 171 days. The lambs were divided into two groups: concentrate-fed lambs (CO) and pasture-fed lambs (PS). The results showed that the CO lambs had heavier carcasses (p< 0.001), a higher dressing percentage (p< 0.001), and higher intramuscular fat (p< 0.01) than the PS lambs. It was determined that the longissimus thoracis muscle of the CO lambs had a lower ultimate pH and higher L* and water-holding capacity than the PS lambs. In this study, intramuscular fat (longissimus thoracis, semimembranosus, triceps brachii), subcutaneous and tail fat samples were used to evaluate the effect of feeding system on fatty acid composition. The polyunsaturated fatty acid to saturated fatty acid ratio (PUFA ∕ SFA) of intramuscular fat was found to be significantly higher in the CO group than in the PS lambs, while similar subcutaneous and tail fat results were found in both groups. Moreover, the PS lambs had a lower n6 ∕ n3 ratio and higher percentage of omega-3 than the CO lambs in all tissues studied (p< 0.05). Overall, the CO lambs have heavier and fattier carcasses with better meat quality traits than the PS lambs. However, the effects of feeding system have varying results based on the fatty acid composition of different types of fat deposits.
ISSN:2363-9822
0003-9438
2363-9822
DOI:10.5194/aab-59-121-2016