动物营养学报2017，Vol.29Issue(8)：2867-2874,8.DOI:10.3969/j.issn.1006-267x.2017.08.031
湖羊肌肉营养特点及肌纤维组织学特性
Nutritional Characteristics and Muscle Fiber Histological Characters of Muscle from Hu Sheep
摘要
Abstract
In order to study the nutritional characteristics and muscle fiber histological characters of muscle from Hu sheep, the contents of common nutrition components ( moisture, crude protein, crude fat, ash, calci-um and phosphorus) , eighteen kinds of amino acids and histological traits ( muscle fiber diameter and density of three parts from arm triceps, biceps femoris and longissimu dorsi) of Hu sheep with different ages ( new-born, weaned and adult) were measured. The results showed as follows:with the age increasing, the moisture content in muscle was significantly decreased ( P<0.05) , and the crude fat, crude protein, ash, calcium and phosphorus contents were gradually increased, and the differences of those indexes between newborn and weaned lambs and adult sheep were significant ( P<0.05) . The threonine ( Thr) , valine( Val) , Met ( methio-nine) , isoleucine ( Ile) , leucine ( Leu) , phenylalanine ( Phe) , lysine ( Lys) , histidine ( His) and arginine ( Arg) contents in muscle of Hu sheep were significantly increased with the age increasing ( P<0.05) , and the non-essential amino acids had generally upward trend with the age increasing. Among all of amino acids in muscle of Hu sheep, glutamic acid ( Glu) content was the highest and the second was aspartic acid ( Asp) . The muscle fiber diameter of arm triceps in the three ages' sheep was the biggest, followed by the biceps fem-oris and the longissimus dorsi. The muscle fiber density of longissimus dorsi in the three ages sheep was the biggest, followed by the biceps femoris and the arm triceps, and the difference of muscle fiber density among the three body part muscles of the same age sheep was significant ( P<0.05) . For the same body part muscle, the muscle fiber diameter was increased and the muscle fiber density was decreased with the age increasing, and the significant differences were existed among different ages ( except the arm triceps of newborn and weaned lambs) ( P<0.05) . It is concluded that Hu sheep muscle has rich nutrition and many kinds of amino acids, and its muscle fiber histological characters are different among different body parts and different ages. Especially, for weaned lamb, the muscle is more nutritious with more sweet and tender.关键词
湖羊/肌肉/营养成分/肌纤维组织学特性Key words
Hu sheep/muscle/nutrient components/muscle fiber histological characters分类
农业科技引用本文复制引用
王玉琴,张自强,丁轲,余祖华,赵战勤,田志龙,施会彬,钟甲丽,任国艳,李元晓,刘玉梅,吴秋珏,王建平..湖羊肌肉营养特点及肌纤维组织学特性[J].动物营养学报,2017,29(8):2867-2874,8.基金项目
国家自然科学基金项目(31472095) （31472095）
国家科技部星火计划项目(2015GA750002) （2015GA750002）
国家现代农业(肉羊)产业技术体系建设专项( CARS-39) （肉羊）
