double muscling meaning in Chinese

双肌性
双肌症

Rlean meat percentage is one of the most important economic traints in pig breeding programs . myostatin is a negative regulator of skeletal muscle growth . null or low activity of myostatin , individual muscle of mutant amimals would show a large and widespread increase in skeletal mass . myostatin null animals have significantly larger diameter or more quantity of fiber skeletal muscle . the phenotype was termed double muscling . in order to probe the relation between myostatin and high lean meat rate and plump - hipped trait , we sythesized the c ' 80 amino acids coding sequence of porcine myostatin and costructed the cloning and expressing vector of it
肌生成抑制素( myostatin ，即mstn )是近几年来( mcpherrona . c等， 1997 )发现的骨骼肌生长的负调控因子，它主要在骨骼肌中表达。其活性的丧失，会引起动物肌肉的过度发育，肌纤维直径变大或肌纤维数增加，表现为双肌症状。肌生成抑制素研究的突破将对猪、肉鸡、肉牛等畜禽生产性能的提高具有特别重要的意义。