萨杜湖杂交羊生长性能、羊毛品质及血液生理生化指标测定

为研究萨福克羊×杜泊羊×湖羊杂交羊（萨杜湖杂交羊）生长发育情况及其对当地生态环境的适应能力，采用生产性能常规测定、显微测定和全自动血液生理生化分析仪分别测定了不同年龄阶段萨杜湖杂交羊的体重、体尺指标、羊毛品质（包括不同部位羊毛的净毛率、细度、有髓毛和无髓毛占比、自然长度和伸直长度等指标）和成年羊血液生理生化指标。结果表明：萨杜湖杂交羊早期生长速度较快，初生阶段及周岁时公羊体斜长均显著高于母羊（P<0.05）；3月龄时公羊体高、体斜长和胸围均显著高于母羊（P<0.05）；6月龄时母羊体重极显著高于公羊（P<0.01），成年时期公羊体重和体高均显著高于母羊（P<0.05）；其余各生长阶段内，公母羊间体重及体尺差异不显著（P>0.05）。其成年时平均净毛率较低，为45.21%；长度适中：平均自然长度为4.55 cm，伸直长度为6.22 cm；细度良好，为17.60 μm。公母羊血液生理生化指标及其同国内绵羊参考值相比存在一定的差异，其中母羊血小板总数（PLT）和血小板压积（PCT）均极显著高于公羊（P<0.01），公羊甘油三酯（TG）和白蛋白（ALB）含量显著高于母羊（P<0.05），其余各项指标均无显著差异（P>0.05）。综上所述，萨杜湖杂交羊在生长发育等方面都有不同程度的改进和提高，本试验结果可为该品种杂交羊进一步开发利用提供参考依据。

The Determination of Growth Performance,Wool Quality and Blood Physiological and Biochemical Indexes of SDH Hybrid Sheep

In order to study the growth and development of Suffolk×Dorper×Hu sheep (SDH) hybrid sheep and its adaptability to the local ecological environment,the body weight and body size indexes of sheep at different ages were measured by conventional measurement of production performance,microscopic measurement and automatic analysis of blood physiology and biochemistry analyzer.Wool quality (including net wool percentage,wool fineness,ratio of medullated and non-medullated wool,natural length and straight length of different parts,etc.) and physiological and biochemical indexes of adult sheep blood were measured.The results showed that the early growth rate of SDH hybrid sheep was fast,and the body length of rams was significant higher than that of ewes in primary stage and one year old (P<0.05).At three months of age,there was a significant difference in body height,body length and chest circumference between rams and ewes (P<0.05),and rams were higher than ewes.At the age of six months,the body weight of ewes was extremely significant higher than that of rams (P<0.01).The body weight and body height of rams were significantly higher than that of ewes in adulthood (P<0.05).There was no significant difference in body weight and body size between rams and ewes during the other growth stages (P>0.05).The average net wool rate,average natural length,straight length,fineness of the hybrid wool was 45.21%,4.55 cm,6.22 cm and 17.60 μm,respectively.There were some differences between blood physiological and biochemical indicators of male and female sheep and the reference value of domestic sheep.The difference in PLT and PCT of ewes were extremely significant higher than rams (P<0.01).There was a significant difference in the contents of triglyceride and albumin (P<0.05),and the ram was higher than the ewes.There was no significant difference between the other indicators (P>0.05).In conclusion,the SDH sheep had improved in various aspects in terms of growth and development,and the results could provide a reference for the further development and utilization of the sheep.