Author(s): ZHAO Yan-jiao, SUN Hai-yun, CUI Ya-li, CHANG Qing-ling, DUN Wei-tao, SUN Hong-xin, CHEN Xiao-yong, TIAN Shu-jun, College of Veterinary medicine, Hebei Agricultural University, College of Animal Science and Technology, Hebei Agricultural University, Research Institute of Animal Husbandry and Veterinary of Hebei Province
Pages: 128-132
Year: 2014 Issue:  5
Journal: China Animal Husbandry & Veterinary Medicine
Keyword:  lamb; muscle fiber; amino acid; intramuscular fat;
Abstract: Well-fed Small-tail Han sheep and crossbred Hanper sheep were selected respectively,and the longissimus dorsi, gluteus medius,biceps femoris,triceps brachii muscle samples were collected.We detected the myofiber cross-sectional areas, diameters,crude fat content and the amino acids composition in muscles.The results showed that the diameter and cross-sectional area of longissimus dorsi in Hanper sheep were significant less than that in Small-tail Han sheep(P<0.01).The diameter and cross-sectional area of biceps femoris in Hanper sheep were greater than that in Small-tail Han sheep(P<0.05).Crude fat contents of longissimus dorsi and biceps femoris in Hanper sheep were higher than that in Small-tail Han sheep(P<0.01, P<0.05).There was no difference in crude fat contents of triceps brachii and gluteus medius between the 2species(P> 0.05).Taurine content in Small-tail Han sheep was greater than that in Hanper sheep(P<0.01).The other 17kinds of amino acids between the 2species were not difference(P>0.05).Five kinds of flavor amino acids contents in Hanper sheep were greater than that in Small-tail Han sheep.The six kinds of essential amino acids contents except lysine and tryptophan in Hanper sheep were higher than that in Small-tail Han sheep.