内蒙古绒山羊血清生化指标和内分泌指标的季节性变化研究

Seasonal variation in serum biochemical indexes and endocrine indexes of Inner Mongolia cashmere goats

为了揭示内蒙古绒山羊血清生化指标和内分泌指标的季节性变化规律,试验选择11只2周岁内蒙古绒山羊母羊全年放牧,记录一年内的环境温度、相对湿度和降水量,并每月颈静脉采集血液样品,测定血清生化指标和内分泌指标。结果显示:绒山羊冬季血清总蛋白和白蛋白含量高于其他季节(P<0.05或P<0.01),冬季血清球蛋白含量高于春季(P<0.05)。绒山羊夏季血清胆固醇和高密度脂蛋白含量低于其他季节(P<0.01),秋季和冬季血清甘油三酯含量高于春季和夏季(P<0.01),秋季低密度脂蛋白含量高于春季和夏季(P<0.05或P<0.01)。绒山羊春季血糖浓度高于秋季(P<0.05),秋季血清胰岛素浓度高于夏季(P<0.05),冬季血清三碘甲状腺原氨酸浓度高于夏季(P<0.05),夏季血清热休克蛋白90浓度高于其他季节(P<0.05或P<0.01)。绒山羊冬季非酯化脂肪酸浓度高于其他季节(P<0.05或P<0.01)。研究表明,季节性变化会影响内蒙古绒山羊血清生化指标,并调控相关内分泌激素的分泌。

In order to reveal the seasonal variation of serum biochemical indexes and endocrine indexes of Inner Mongolia cashmere goats,a total of 11 two-year-old ewes were allowed to graze freely throughout the year,and the ambient temperature,relative humidity,and precipitation were recorded over the course of the year.Monthly blood samples were collected from the jugular vein to measure serum biochemical indexes and endocrine indexes.The results showed that in winter,serum total protein and albumin concentrations of cashmere goats were higher compared to other seasons(P<0.05 or P<0.01),and serum globulin concentration was higher in winter than in spring(P<0.05).In summer,serum cholesterol and high-density lipoprotein concentration of cashmere goats was lower than in other seasons(P<0.01),and serum triglyceride concentration in autumn and winter was higher than in spring and summer(P<0.01),while lowdensity lipoprotein concentration was higher in autumn than in spring and summer(P<0.05 or P<0.01).Blood glucose concentration of cashmere goats in spring was higher than in autumn(P<0.05),serum insulin concentration in autumn was higher than in summer(P<0.05),serum triiodothyronine concentration in winter was higher than in summer(P<0.05),and serum heat shock protein 90 concentration in summer was higher than in other seasons(P<0.05 or P<0.01).Non-esterified fatty acid concentration of cashmere goats in winter was higher than in other seasons(P<0.05 or P<0.01).The study indicates that seasonal changes can influence serum biochemical indicators and regulate the secretion of related endocrine hormones in Inner Mongolian cashmere goats.