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不同鸭品种肌纤维的发育规律研究
引用本文:廖菁,常国斌,徐琪,张依裕,张海波,周琼,陈国宏.不同鸭品种肌纤维的发育规律研究[J].农业科学与技术,2009,10(5):107-109.
作者姓名:廖菁  常国斌  徐琪  张依裕  张海波  周琼  陈国宏
作者单位:扬州大学动物科技学院,江苏扬州225009
基金项目:国家科技部支撑计划重大专项,国家"863"计划项目 
摘    要:目的]研究不同品种鸭在不同发育时期肌纤维的发育规律。方法]采用电子显微镜观察相同条件下饲养10周的樱桃谷鸭、金定鸭、白羽番鸭、苏牧麻鸭(樱桃谷♂×♀)的胸肌肌纤维的超微结构,并测定肌原纤维的直径和肌节长度。结果]随着日龄的增加,肌原纤维直径越来越粗;肌节长度及肌原纤维直径随日龄增长的变化差异不显著(P〉0.05);白羽番鸭和金定鸭肌原纤维直径相对较粗,而樱桃谷鸭和苏麻鸭相对较细;苏麻鸭和白羽番鸭的肌节长度相对较长,而樱桃谷鸭和金定鸭的相对较短,揭示金定鸭和白羽番鸭肌肉嫩度比樱桃谷鸭和苏牧麻鸭高,肉质较嫩;各鸭品种肌纤维超微结构基本特征一致,肌纤维均含有较多的椭圆形细胞核.位于肌纤维的边缘,紧贴肌膜表面;肌浆内含有大量的肌原纤维,在肌原纤维之间分布有肌浆网、糖原颗粒、脂肪滴和丰富的线粒体;肌原纤维呈细丝状,直径1μm左右,沿纤维的长轴平行排列。结论]该结果对鸭的选种及选育有着重要意义。

关 键 词:  肌纤维  超微结构  发育规律

Study on Development Rule of Muscle Fiber in Different Duck Breeds
LIAO Jing,CHANG Guo-bin,XU Qi,ZHANG Yi-yu,ZHANG Hai-bo,ZHOU Qiong,CHEN Guo-hong.Study on Development Rule of Muscle Fiber in Different Duck Breeds[J].Agricultural Science & Technology,2009,10(5):107-109.
Authors:LIAO Jing  CHANG Guo-bin  XU Qi  ZHANG Yi-yu  ZHANG Hai-bo  ZHOU Qiong  CHEN Guo-hong
Institution:( College of Animal Science & Technology, Yangzhou University, Yangzhou 225009)
Abstract:Objective] The aim of this study was to investigate the development rule of muscle fiber in different duck breeds during various developmental stages. Method] Cherry valley duck, Jinding duck, White muscory duck and Suma duck ( Cherry valley duck ♂ × Jinding duck ♀ ) were fed for 10 weeks to observe the ultrastructure of muscle fiber by electron microscope, and the myofibril diameter and sarcomere length were also determined. Result] The myofibril diameter increased with ages. Sarcomere length and myofibril diameter did not change significantly with the increasing ages (P〉0.05). The myofibril diameter of White muscory duck and Jinding duck were thicker, while that of Cherry valley cluck and Suma duck were thinner. Moreover, the sarcomere length of Suma duck and White muscory duck were longer, while that of Cherry valley duck and Jinding duck were shorter. Thus, the basic characteristics of ultrastructure of muscle fiber were consistent in these duck breeds.Conclusion] The results have an important meaning for duck breeding.
Keywords:Duck  Muscle fiber  Ultrastructure  Development rule
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