Molecular Nutrition

Effects of Dietary Supplementation of Sea Buckthorn Pomace on Growth Performance, Slaughter Performance, Meat Quality, and pH of Digestive Tract Content of Fattening Sheep

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  • 1. College of Animal Science and Technology, Shanxi Agricultural University, Taigu 030801, China;
    2. Animal Husbandry Bureau of Youyu County of Shanxi Province, Youyu 037200, China

Received date: 2018-01-09

  Online published: 2018-08-18

Abstract

The purpose of this experiment was to investigate the effects of dietary supplementation of sea buckthorn pomace (SBP) on growth performance, slaughter performance, meat quality and the pH of digestive tract content of fattening sheep. Forty Dorper×small tailed Han rams (4 months of age, weighted about 22 kg) were randomly selected and randomly assigned into 4 groups with 10 rams per group according to the supplemental proportions of SBP, which were 0 (control group), 7.8% (8SBP group), 16.0% (16SBP group) and 23.5% (24SBP group), respectively. The experiment lasted for 80 days with the first 10 days for pretest period and the last 70 days for test period. The results showed as follows:average daily gain and dry matter intake in 16SBP and 24SBP groups were significantly higher than those in control group and 8SBP group (P<0.05). There was no significant difference in feed conversion rate among groups (P>0.05). Final weight in 16SBP group was significantly higher than that in control group and 8SBP group (P<0.05). Net meat weight in 16SBP and 24SBP groups was significantly higher than that in control group (P<0.05). 24SBP group had significantly lower GR value in muscle than control group and 8SBP group (P<0.05). Ether extract content in muscle in 16SBP and 24SBP groups was significantly higher than that in control group and 8SBP group (P<0.05). Shearing force in muscle in 8SBP and 16SBP groups was significantly higher than that in control group (P<0.05). No significant differences were observed in muscle pH, meat color, water holding capacity and cooked meat rate among groups (P>0.05). The pH of the abomasum liquid, duodenum content and jejunum content was decreased with the increase of SBP supplemental proportion, and 24SBP group was significantly lower than control group (P<0.05). Therefore, dietary supplementation of SBP can improve growth performance indexes, such as average daily gain, dry matter intake and net meat weight, increase ether extract content in muscle, improve tenderness of muscle and intestinal environment, which suggests that SBP can be used as a new type of feed resource for fattening sheep, and the optimal supplemental proportion in diet is 16.0% under the condition of the present experiment.

Cite this article

DIAO Xiaogao, HAO Xiaoyan, ZHAO Junxing, DING Na, YU Shengchen, XIANG Binwei, ZHANG Wenjia, ZHANG Jianxin . Effects of Dietary Supplementation of Sea Buckthorn Pomace on Growth Performance, Slaughter Performance, Meat Quality, and pH of Digestive Tract Content of Fattening Sheep[J]. Chinese Journal of Animal Nutrition, 2018 , 30(8) : 3258 -3266 . DOI: 10.3969/j.issn.1006-267x.2018.08.045

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