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《Acta Prataculturae Sinica》 2017-01
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Performance of Hu sheep in the cold,arid area's of North-West China

MO Fu-Tao;LI Fa-Di;WANG Wei-Min;LA Yong-Fu;ZHANG Xiao-Xue;LIU Ting;TANG De-Fu;YUE Xiang-Peng;LI Fei;LI Chong;LI Wan-Hong;XIAO Jin-Yu;TAN Jian-Hua;WU De-Hu;College of Animal Science and Technology,Gansu Agricultural University;College of Pastoral Agriculture Science and Technology,Lanzhou University;Sheep Breeding Biotechnology Engineering Laboratory of Gansu Province;Jinchang Zhongtian Sheep Industry Co.Ltd.;  
Hu sheep are one of the world's rare localised sheep breeds;it is known for high fecundity,early maturity,rapid growth rates and being suitable for stabling.In order to understand the growth and development and enable better utilization of the traits of Hu sheep male sheep 3,6,12 and 24months of age were assessed to determine live weight,the weight of different body components including the digestive tract weight,intestinal length,and meat quality traits.Results indicated that Hu sheep grow fastest between 3to 6months of age;after 6months,relative growth rates begin to decline.Organ growth(heart,liver,spleen,lung,kidney,headand feet,skin and wool)increased with age between 3to 6months,though the head,feet,skin and wool were relatively stable,growth of remaining organs gradually reduced becoming stable by age 12 months.The growth rate of the rumen was always greater than growth in live weight,while the growth rate of the small intestine was less,with the exception of colorectal growth which was similar to live weight growth.Compared to 12 month old sheep,6month old male Hu sheep have better back fat thickness and eye muscle area with no difference in dress out and loin eye area.Meat colour darkened with age.It was concluded that the optimal age for slaughter was 6months.
【Fund】: 甘肃省科技支撑计划(144NKCC049);; 现代农业产业技术体系建设专项资金(CARS-39);; 高等学校博士学科点专项科研基金(博导类)(20130211110033)资助
【CateGory Index】: S826
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