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

• Published in: Animal bioscience Vol. 32; no. 10; pp. 1630 - 1639
• Main Authors: Jin, Yan Mei, Zhang, Xiao Qing, Badgery, Warwick B, Li, Peng, Wu, Jun Xi
• Format: Journal Article
• Language: English
• Published: Korea (South) Asian - Australasian Association of Animal Production Societies 01.10.2019; Asian-Australasian Association of Animal Production Societies (AAAP) and Korean Society of Animal Science and Technology (KSAST); Asian-Australasian Association of Animal Production Societies; 아세아·태평양축산학회
• Subjects: Abscisic acid; Analysis; Cold Stress; Metabolites; Peroxidase; Physiological aspects; Plant hormones; Production management; Resveratrol; Serum Metabolites; Sheep; Tibet; Winter Housing; Wool; 축산학; United Kingdom; China; Cold Stress; Sheep; Serum Metabolites; Tibet; Winter Housing
• ISSN: 1011-2367; 2765-0189; 1976-5517; 2765-0235
• DOI: 10.5713/ajas.18.0966

Sixty Pengbo semi-wool sheep ewes (approximately 1.5-years-old; 31.33 ± 0.43 kg) were randomly assigned to two groups, either G (grazing) or D (dry lot feeding), to examine the effects of traditional daily grazing and dry lot feeding on performance and blood metabolites during the cold season in Tibetan Plateau. 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/day of commercial concentrate, and grass hay was available freely throughout the experimental period. 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 D group in comparison with the G group. 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.