Differences in muscle and fat accretion in Japanese Black and European cattle
Differences in muscle and fat accretion in Japanese Black and European cattle
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DOI：
10.1016/j.meatsci.2009.01.026
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发表时间：
2009-07-01
期刊：
影响因子：
7.1
通讯作者：
Wegner, J.
中科院分区：
文献类型：
--
作者：
Gotoh, T.;Albrecht, E.;Wegner, J.
研究了商业日本黑牛（JB）在生长过程中不同肌肉和脂肪组织的发育，并与欧洲最大变异品种进行了比较。在日本和欧洲牛肉生产系统的典型条件下饲养的动物，在24个月大时体重增加相似，但胴体组成不同。JB的胴体脂肪含量最高，肌肉含量最低。JB的最长肌在24月龄时产生了23.3%的肌内脂肪（IMF），而欧洲品种的肌内脂肪含量为0.6%至4.7%。背最长肌IMF含量与不同脂肪组织重量之间的关系表明，每一个百分比的IMF都伴随着大量的“废脂肪”。而JB牛独特的品种特性和特殊的饲养制度，使其具有良好的IMF沉积能力，但同时也使其“废脂”的产生相对较少。(C)2009爱思唯尔有限公司保留所有权利。
The development of different muscles and adipose tissues during growth was investigated in commercial Japanese Black (JB) cattle and compared with breeds of the largest variation to be found in Europe. Animals, reared under typical conditions for Japanese and European beef production systems, gained similar body weights but different carcass composition at 24 months of age. The carcass of JB contained more adipose tissue and the least proportion of muscle. The longissimus muscle of JB developed extraordinary amounts of 23.3% intramuscular fat (IMF) at 24 months of age, compared from 0.6% to 4.7% in European breeds. The relationships between IMF content in the longissimus muscle and different adipose tissue weights indicate that a large amount of "waste fat" is accreted with every percent of IMF. However in JB, the good ability of IMF deposition is associated with relatively least development of "waste fat", as a result of unique breed characteristics combined with special feeding system. (C) 2009 Elsevier Ltd. All rights reserved.