Performance of Hu sheep in the cold, arid area’s of North-West China

doi:10.11686/cyxb2016076

Abstract

Abstract: 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 24 months 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 3 to 6 months of age; after 6 months, relative growth rates begin to decline. Organ growth (heart, liver, spleen, lung, kidney, head and feet, skin and wool) increased with age between 3 to 6 months, 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, 6 month 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 6 months.

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. Performance of Hu sheep in the cold, arid area’s of North-West China[J]. Acta Prataculturae Sinica, 2017, 26(1): 168-177.

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