Effects of natural grass hay on the growth, carcass traits and economic profitability of Wadi sheep in arable regions

doi:10.11686/cyxb2016002

Abstract

Abstract: A total of 27 Wadi sheep weighing (20±0.50) kg at age 4 months were randomly divided into 3 groups to investigate the effects of natural grass hay on their growth, carcass traits and economic profitability in arable regions. The three treatment groups were fed with natural grass hay (Ⅰ), maize silage and peanut vine (Ⅱ), and maize silage and alfalfa (Ⅲ). The experiment lasted 105 d, including a preliminary trial period (15 d) and the trial period proper (90 d). The results showed that there was no significant difference in total and average daily weight gain among the three treatments. The feed to gain ratio of treatment Ⅰ was 4.55% and 11.29% lower than treatments Ⅱ and Ⅲ (P<0.05) respectively. There were no significant differences in the animals’ increasing body height, body length and chest among the three treatments. There was no significant difference in dressing percentage; treatment Ⅰ was 1.22% higher than Ⅱ and 2.33% lower than Ⅲ. There was no significant difference in carcass net muscle percentage; the highest was 37.83% in Ⅰ, which was higher than Ⅱ and Ⅲ by 2.97% and 1.26% respectively. There was no significant difference in meat-bone ratio, with Ⅰ higher than Ⅱ by 1.56% and lower than Ⅲ by 3.35%. The eye muscle areas were similar in the three treatments, with Ⅰ the highest, 0.57% higher than Ⅱ and 7.30% higher than Ⅲ. The profitability of treatment Ⅰ was the highest at 492.15 yuan, higher than Ⅱ and Ⅲ by 41.31 yuan and 150.74 yuan respectively. In conclusion, natural grass hay can promote the growth, carcass traits and profitability of Wadi sheep.

LI Yong-Zhen, MIAO Fu-Hong, SHEN Zhi-Qiang, LIN Ying-Ting, LI Guo-Cai, SUN Juan. Effects of natural grass hay on the growth, carcass traits and economic profitability of Wadi sheep in arable regions[J]. Acta Prataculturae Sinica, 2016, 25(11): 178-184.

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