Nutritional Characteristics and Muscle Fiber Histological Characters of Muscle from Hu Sheep

WANG Yuqin, TIAN Zhilong, SHI Huibin, ZHONG Jiali, REN Guoyan, LI Yuanxiao, LIU Yumei, WU Qiujue, WANG Jianping, ZHANG Ziqiang, DING Ke, YU Zuhua, ZHAO Zhanqin

doi:10.3969/j.issn.1006-267x.2017.08.031

Chinese Journal of Animal Nutrition >

2017 , Vol. 29 >Issue 8: 2867 - 2874

DOI: https://doi.org/10.3969/j.issn.1006-267x.2017.08.031

Molecular Nutrition

Nutritional Characteristics and Muscle Fiber Histological Characters of Muscle from Hu Sheep

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1. College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China;
2. Engineering Research Center for Mutton Sheep Breeding of Henan Province, Luoyang 471003, China

Received date: 2017-02-08

Online published: 2017-08-02

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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, calcium 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 (newborn, 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 (methionine), 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 femoris 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.

Key words： Hu sheep; muscle; nutrient components; muscle fiber histological characters

Cite this article

WANG Yuqin, TIAN Zhilong, SHI Huibin, ZHONG Jiali, REN Guoyan, LI Yuanxiao, LIU Yumei, WU Qiujue, WANG Jianping, ZHANG Ziqiang, DING Ke, YU Zuhua, ZHAO Zhanqin . Nutritional Characteristics and Muscle Fiber Histological Characters of Muscle from Hu Sheep[J]. Chinese Journal of Animal Nutrition, 2017 , 29(8) : 2867 -2874 . DOI: 10.3969/j.issn.1006-267x.2017.08.031

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