呼伦贝尔短尾羊与戈壁羊杂交效果分析  

Analysis of Crossbreeding Effect between Hulun Buir Short Tailed Sheep and Gobi Sheep

作　　者：达赖 何小龙 付绍印 祁云霞 王标 孙素珍 特日格勒 张兴夫 刘永斌 Dalai;HE Xiao-long;FU Shao-yin;QI Yun-xia;WANG Biao;SUN Su-zhen;Terigele;ZHANG Xing-fu;LIU Yong-bin(Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China)

机构地区：[1]内蒙古自治区农牧业科学院,内蒙古呼和浩特010031

出　　处：《畜牧与饲料科学》2018年第10期53-56,共4页Animal Husbandry and Feed Science

基　　金："十二五"农村领域国家科技计划(2015BAD03B0505);内蒙古自治区农牧业科学院创新基金项目(2015CXJJM02;2017CXJJM01-2);国家自然科学基金项目(31760658);国家肉羊产业技术体系(CARS-38);科技部家养动物种质资源平台项目

摘　　要：为了改善戈壁羊体型小、尾型大的特性,引入呼伦贝尔短尾羊作为父本,采用引入杂交的育种方式,对其开展杂交选育研究。通过对早期生长发育对比分析发现,戈壁羊和F_1代、F_2代羔羊0～3月龄的早期生长发育规律一致,从2月龄以后,杂交F_2代羔羊的生长发育快于F_1代和戈壁羊羔羊;通过计算0～3月龄平均日增重,戈壁羊和F_1代、F_2代羔羊的平均日增重分别为121.189、138.978、170.133 g,说明F_2代羔羊的生长发育速度最快,戈壁羊羔羊最慢;最后通过对比3月龄的体尺和尾型发现,F_2代羔羊的体高、体长、胸围均显著大于戈壁羊羔羊,F_2代3月龄羔羊的尾长和尾宽分别为7.596 0 cm和7.268 1cm,且显著小于戈壁羊羔羊。研究结果说明用呼伦贝尔短尾羊杂交改良戈壁羊,可有效地增大戈壁羊的体型,减小尾型,杂交效果显著。In order to improve the characteristics of small size and large tail size of Gobi sheep, a crossbreeding experiment was conducted using Hulun Buir short tailed sheep as male parent by introductive crossing breeding method. The comparative analysis of early growth and development showed that although the early growth and development rules of F1 and F2 hybrid lambs were consistent with those of Gobi lambs from 0 to 3 months old, and the growth and development of F2 hybrid lambs were significantly faster than that of F1 hybrid lambs and Gobi lambs after 2 months old. The average daily gain from 0 to 3 months old of Gobi lambs, F1 hybrid lambs and F2 hybrid lambs was 121.189 g,138.978 g and 170.133 g, respectively, which indicated that hybrid F2 lambs grew fastest and Gobi lambs grew slowest. By comparing the body size and tail shape of 3 months old lambs, it was found that the height, body length and chest circumference of F2 hybrid lambs were significantly higher than those of Gobi lambs; the tail length and tail width of F2 hybrid lambs were 7.596 0 cm and 7.268 1 cm, respectively, which were significantly smaller than those of Gobi lambs. The obtained data suggested that the crossbreeding of Hulun Buir short tailed sheep could enlarge the body shape and decrease the tail shape of Gobi sheep effectively.

关 键 词：呼伦贝尔短尾羊 戈壁羊 引入杂交 生长发育 

分 类 号：S826.32[农业科学—畜牧学]