皮肤组织脱碘酶活性与山羊绒毛生长关系的研究

试验选用8只平均(15±2)月龄、平均体重(32.08±3.12)kg半同胞内蒙古白绒山羊羯羊,研究自然条件下绒山羊生绒期皮肤脱碘酶(MD)活性与绒毛生长的关系,从酶活性途径探讨绒山羊绒毛生长机理。结果表明:绒毛开始萌发到绒毛生长旺盛期,羊绒生长速度与粗毛生长速度呈高度负相关(r=-0.92,P<0.05);羊绒生长速度与皮肤二型脱碘酶(MDⅡ)活性呈正相关(r=0.95,P<0.05);羊绒生长速度与皮肤三型脱碘酶(MDШ)活性(r=-0.90,P<0.05)及MDШ/MDⅡ比值(r=-0.91,P<0.05)呈负相关;粗毛生长速度与MDⅡ活性存在高度负相关(r=-0.98,P<0.01),与MDШ活性(r=0.90,P<0.05)及MDШ/MDⅡ比值(r=0.97,P<0.01)呈现正相关。因此,皮肤组织中MD活性与绒山羊绒毛生长的生理过程具有相关关系。

The Correlation between Hair Fibre and Skin Deiodinase in Cashmere Goats

The experiment was aimed to study the correlation of skin deiodinase and cashmere growth and guard hair under natural condition in cashmere goats. Eight half-sib wethers of Inner Mongolia white cashmere goats with(15 ± 2) months and(32.08 ± 3.12) kg were picked out. The results showed that there was a significant negative correlation between cashmere fibre growth rate and guard hair growth rate(r = -0.92,P < 0.05) from cashmere fibre initiated to the fast growing. During this period,there was a significant positive correlation between cashmere fibre growth rate and monodeiodinase type Ⅱ(MDⅡ)activity of skin(r = 0.95,P < 0.05); and there were significant negative correlations between cashmere fibre growth rate and monodeiodinase type Ш (MDШ) activity (r = -0.92,P < 0.05) and the ratio of MDШ and MDⅡ(r = -0.91,P < 0.05); and there was a significant negative correlation between guard hair growth rate and MDⅡ activity of skin(r = -0.98,P < 0.01); and there were also significant positive correlations between guard hair growth rate and MDШ activity(r = 0.90,P < 0.05) and the ratio of MDШ and MDⅡ(r = 0.97,P < 0.01). Therefore,there was an important correlation between skin MD activity and physiological process of hair fibre growing in cashmere goats.