Analysis of Fatty Acid Contents of longissimus dorsi in Different Crossbreeds of Beef Cattle
LI Ju-cai;LIU Zi-xin;WANG Chuan;MEI Ning-an;MA Xiao-ming
1.Research Center of Grass and Livestock Engineering Technology, Ningxia Academy of Agriculture and Forestry Sciences,
Yinchuan 750002, China；2. Animal Husbandry and Veterinary Institute, Ningxia Academy of Agriculture
and Forestry Science, Yinchuan 750002, China
Abstract：A total of 18 bulls with similar age, body weight and body condition (6 ones from each crossbreed) from three crossbreeds (AG×L, LM × L and SM × L) of local cattle with Angus, Limousin and Simmental were analyzed for fatty acid contents in Longissimus dorsi. Three bulls randomly selected from each crossbreed were slaughtered to collect Longissimus dorsi samples. The results showed that the Longissimus dorsi of SM × L had a higher SFA content than that of AG × L and LM×L. For all the three crossbreeds, the major SFA were palmitic acid and stearic acid in Longissimus dorsi. Stearic acid content were higher in the Longissimus dorsi of SM × L and AG × L than that of LM × L (P＜0.01; P＜0.05), while conversely the Longissimus dorsi of LM×L was richer in MUFAs than that of SM × L and AG×L. In addition, the Longissimus dorsi of SM×L revealed higher PUFA content than that of AG×L and LM×L, and linoleic acid and arachidonic acid were dominant among the PUFAs in the Longissimus dorsi of each crossbreed. Total fatty acids, eicosapentaenoic acid, n-6 PUFAs and n-3 PUFAs as well as PUFA/SFA ratio showed a higher level in AG × L than LM × L and SM × L, while SM × L had a higher n-6/n-3 PUFAs ratio than AG×L and LM×L.
2012, Vol. 26 
