季节与滩羊被毛特性的关系

对滩羊春毛、秋毛的研究结果表明:滩羊全年平均产毛量为1.33kg,其中春、秋毛分别占59.4％和40.6％。羊毛纤维类型的组成方面,各年龄阶段秋毛中无髓毛含量明显低于春毛(P<0.01)。两型毛、有髓毛含量则明显高于春毛(P<0.01)。被毛油脂含量秋毛低于春毛(P<0.05)。羊毛细度方面,秋毛的有髓毛较春毛有髓毛细(P<0.05),而两型毛则是秋毛较春毛粗(P<0.01),无髓毛细度在各年龄阶段春秋毛间差异不显著,但细度的变异程度秋毛较春毛小。在羊毛径比方面,有髓毛径比秋毛较春毛小。无髓毛、两型毛的径比,在各年龄阶段春秋毛间差异不显著(P>0.05)。羊毛伸直长度,在各年龄阶段的各种纤维类型上春毛均高于秋毛,其中粗无髓毛、两型毛差异显著(P<0.05)。羊毛强伸度秋毛均较春毛高,特别是强度差异极显著(P<0.01)。

The Relation between Seasonal Effect and the Fleece Characters of Tan-sheep

A comparison study of the spring-wool and fall-wool in Tan-sheep was made. The results showed that the average wool yield of sheep per year was 1.33 kg, and the spring-wool and fall-wool were 59.4% and 40.6% respectively. The percentage of the unmedullated fibers in fall-wool was significantly lower than that in spring-wool in different age(P<0.01), but the heterotype fibers and the medullated fibers were higher than that in spring-wool (P<0.01). The percentage of fat in spring-wool was higher than that in fall-wool, especially in 1.5 year old sheep (P<0.01). In aspect of wool fineness, the medullated fibers in fall-wool were thinner than that in spring-wool, and the heterotype fibers were thicker than the spring-wool. The diameter ratio in fall-wool was smaller than that in spring-wool and the strength and the elongation at break were bigger than those in the spring-wool.