Effects of winter and spring housing on growth performance and blood metabolites of Pengbo semi-wool sheep in Tibet

文献类型： 外文期刊

第一作者： Jin, Yan Mei

作者： Jin, Yan Mei;Zhang, Xiao Qing;Li, Peng;Badgery, Warwick B.;Wu, Jun Xi

作者机构：

关键词： Tibet; Cold Stress; Sheep; Winter Housing; Serum Metabolites

期刊名称：ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES （ 影响因子：2.509； 五年影响因子：2.604 ）

ISSN： 1011-2367

年卷期： 2019 年 32 卷 10 期

页码：

收录情况： SCI

摘要： Objective: Sixty Pengbo semi-wool sheep ewes (approximately 1.5-years-old; 31.33 +/- 0.43 kg) were randomly assigned to two groups, either grazing (G) or dry lot feeding (D), to examine the effects of traditional daily grazing and dry lot feeding on performance and blood metabolites during the cold season in Tibetan Plateau. Methods: The ewes in the G group were grazed continuously each day and housed in one shed each evening, while the ewes in the D group were housed in another shed all day. All animals were fed 400 g/d of commercial concentrate, and grass hay was available freely throughout the experimental period. Results: Compared with the G group, the ewes in the D group had higher (p<0.05) live weight and weight gain. The D group ewes had greater (p<0.05) numbers of white blood cells and platelets, while they had lower (p<0.05) platelet-large cell ratios, cholesterol, high-density lipoprotein cholesterol and glutathione peroxidase, as compared with the G group ewes. Additionally, three serum metabolites, abscisic acid, xanthoxin and 3,4-dihydroxy-5-polypren, were upregulated (p<0.05) in the G group in comparison with the D group. Conclusion: In conclusion, a dry lot feeding regime during the winter and spring period will increase the productivity of sheep and improve blood physiological and biochemical profiles.

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