毛丛弯曲频率与中国美利奴生产性能及羊毛品质相关性的研究

本研究采用方差分析法对中国美利奴《新疆型》主要经济性状和部分羊毛品质与毛丛弯曲频率(每英寸内弯曲数)的相关性进行了研究,并对部分性状进行了多重比较和最小二乘分析。研究结果表明,不同毛丛弯曲频率间中国美利奴初生重、断奶重、断奶毛长、周岁重、周岁污毛量、二岁体重、二岁污毛量、二岁密度、伸直率、单位长度内鳞片数,以及肩、侧、股三个部位的毛丛弯曲频率和后代初生重无显著差异(FF_(0.01)、显著(F>F_(0.05)或比较显著(F>F_(0.10),所反应的规律性基本上是:毛丛弯曲越大,净毛量、净毛率越高,二岁毛长、周岁毛长、羊毛伸直长度越长,强度和相对强度越大;但毛丛弯曲越大,羊毛伸直长度的均匀性和细度的均匀性也越差;伸度以毛丛弯曲频率在10.5～12.5个/英寸之间者最大,但与其它各组间差异并不显著,细度没有表现出随着毛丛弯曲变大,羊毛变粗的趋势。

Study on Relationship Between Woll Crimp frequency and Chinese MerinoProductivity and Its Wool Quality

The relationship between wool crimp frequency and Chinese Morino(Xin Jiang type)productivity and its wool quality was studied by means of Variance Analy-sis, and some traits were studied by means of Mutible Comparision and Ordinary loast Squre Bstimation.The results showed that the birth weight,weaning wool length,yearling grease weight,twinter weight,twinter grease weight,twinter wool density,stretched length rato, scale numbors por cm.,wool crimp frequency of shoulder,side and thigh,and birth woight of descendant are not significant in difforont wool crimp froquencics(FF(0.01)),or significant (F>F_(0.05)),or comperativcly significant(F>F(0.10)).As a whole,the laws are that the bigger the wool crimp is,the higher the clean count and yield are,the longer the twinter wool length,yearling wool length and stretched wool length are,the stronger the strength and relative strength are,but on the other band,the worse the evenesses of stretched length and finsness are.Stretched degree is the biggest when tht wool crimp frequency is in 10.5-12.5 per in,but not significant in comparision with the others.Fineness does not ap- pear the tendenoy of becoming wider,when wool crimp becomes bigger.