| 湖羊肌肉营养特点及肌纤维组织学特性 |
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| 引用本文： | 王玉琴,田志龙,施会彬,钟甲丽,任国艳,李元晓,刘玉梅,吴秋珏,王建平,张自强,丁轲,余祖华,赵战勤.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). |
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| 作者姓名： | 王玉琴 田志龙 施会彬 钟甲丽 任国艳 李元晓 刘玉梅 吴秋珏 王建平 张自强 丁轲 余祖华 赵战勤 |
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| 作者单位： | 1. 河南科技大学动物科技学院,洛阳 471023;河南省肉羊繁育工程技术研究中心,洛阳 471003;2. 河南科技大学动物科技学院,洛阳,471023 |
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| 基金项目： | 国家自然科学基金项目，国家科技部星火计划项目，国家现代农业(肉羊)产业技术体系建设专项 |
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| 摘 要： | 为了研究湖羊肌肉营养特点及肌纤维组织学特性,分别测定了不同年龄(初生、断奶、成年)湖羊肌肉中常规营养成分(水分、粗蛋白质、粗脂肪、粗灰分、钙、磷)、18种氨基酸的含量以及不同年龄湖羊不同部位肌肉(臂三头肌、股二头肌、背最长肌)的肌纤维组织学特性(肌纤维直径、肌纤维密度)。结果表明:随着年龄的增长,肌肉中水分含量显著降低(P0.05),粗脂肪、粗蛋白质、粗灰分、钙和磷的含量逐渐增加,且成年羊与初生羔羊和断奶羔羊之间差异显著(P0.05)。湖羊肌肉中苏氨酸、缬氨酸、蛋氨酸、异亮氨酸、亮氨酸、苯丙氨酸、赖氨酸、组氨酸和精氨酸的含量随着年龄的增长而显著增加(P0.05),非必需氨基酸含量随着年龄的增长大致呈增加趋势。在湖羊肌肉的所有氨基酸中含量最高的是谷氨酸,其次是天冬氨酸。不同年龄湖羊的肌纤维直径均表现为背最长肌股二头肌臂三头肌,肌纤维密度均表现为背最长肌股二头肌臂三头肌,且同龄湖羊3个部位之间的肌纤维密度均差异显著(P0.05)。相同部位的肌肉,其肌纤维直径随年龄的增长而增大,肌纤维密度随年龄的增长而减小,且不同年龄间差异显著(初生羔羊与断奶羔羊的臂三头肌除外)(P0.05)。综上可知,湖羊肌肉营养丰富,氨基酸种类齐全,肌纤维组织学特性在不同年龄和不同部位间存在差异,断奶羔羊肉营养更丰富,更具香、嫩等特点。
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| 关 键 词： | 湖羊 肌肉 营养成分 肌纤维组织学特性 |
Nutritional Characteristics and Muscle Fiber Histological Characters of Muscle from Hu Sheep |
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| 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].Acta Zoonutrimenta Sinica,2017,29(8). |
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| Authors: | 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 |
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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, 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. |
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| Keywords: | Hu sheep muscle nutrient components muscle fiber histological characters |
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