细毛羊腹毛高弯问题的研究(Ⅱ) 东北细毛羊高弯腹毛主要物理特性的研究

1.东北细毛羊高弯腹毛纤维的直径小于同一个体的体侧毛1.32微米(1.19—1.44微米),差异非常显著(P<0.01);小于正常腹毛0.90微米(0.8—0.95微米),差异显著(P<0.05)。2.在有高弯的各类腹毛间,其自然长度随高弯面积的增大而依次下降。高弯腹毛的长度比正常腹毛短1.30厘米,比体侧毛短3.03厘米,差异均非常显著(P<0.01),各类腹毛的伸直长度均短于体侧毛,差异显著(P<0.01),而各类腹毛间的差异不显著(P>0.05)。3.腹毛净毛率比体侧毛高1.18%,油脂含量高4.30%,差异均非常显著(P<0.01),但各类腹毛问的差异均不显著(P>0.05)。1.正常腹毛的各种弯曲参数与体侧毛相近,波宽/波高值在2.00以上,而高弯腹毛则其值较小。5.各类腹毛的强伸度明显地低于体侧毛。腹毛高弯面积越大,单纤维强伸度降低越明显。

RESEARCH ON SOME PHYSICAL CHARACTERISTICS OF THE HIGH CRIMPED ABDOMINAL FIBRE IN NORTHEASTERN FINE WOOL SHEEP

1.The diameter of the High-Crimped Abominal Fibre(HCAF as used infollowing)of the North-Eastern Finewool Sheep is 1.32μm(1.19—1.44mm)thinner than the side wool(P<0.01)and 0.90μm(0.80—0.95)thinner thanthe normal abdominal fibre.2.The staple length of HCAF in various parts of abdomen tends to beshorter as the area is increased.The length of the HCAF is 1.30cm shorterthan the normal abdominal wool(P<0.01)and 3.03cm shorter than the sidewool,but the difference between the various kinds of HCAF is not signifi-cant(P>0.05).3.Abdominal wool is 11.8% higher in scouring yield and 4.30% more ingrease content than the side wool(P<0.01),but it is not significant betrweenthe various kinds of HCAF(P>0.05).4.The crimp coefficients of the normal abdominal wool are similar tothose of the side wool.The crimp width/crimp height value is over 2.00 innormal abdominal wool,but is smaller in the HCAF.5.The strength and elongation at break of the abdominal wool are sign-ificantly smaller than the side wool.the greater the area of HCAF,thelower the strength and elongation at break of the fibre.