数字农科院2.0

Analysis of rotational grazing management for sheep in mixed grassland

文献类型： 外文期刊

作者： Zongyong Tong;Xianlin Dai;Yu Wang;Xianglin Li;Feng He;Guomei Yin

作者机构：

关键词： Fatty acids;Grazing managment;Mixed grassland;Rotational grazing;Sheep

期刊名称： PeerJ

ISSN： 2167-8359

年卷期： 2024 年 12 卷

页码：

收录情况： SCIE（2024版）

摘要： Sown mixed grassland is rarely used for livestock raising and grazing; however, different forages can provide various nutrients for livestock, which may be beneficial to animal health and welfare. We established a sown mixed grassland and adopted a rotational grazing system, monitored the changes in aboveground biomass and sheep weights during the summer grazing period, measured the nutrients of forage by near-infrared spectroscopy, tested the contents of medium- and long-chain fatty acids by gas chromatography, and explored an efficient sheep fattening system that is suitable for agro-pastoral interlacing areas. The results showed that the maximum forage supply in a single grazing paddock was 4.6 kg DM/d, the highest dry matter intake (DMI) was 1.80 kg DM/ewe/d, the average daily weight gain (ADG) was 193.3 g, the DMI and ADG were significantly correlated (P < 0.05), and the average feed weight gain ratio (F/G) reached 8.02. The average crude protein and metabolizable energy intake by sheep were 286 g/ewe/d and 18.5 MJ/ewe/d respectively, and the n-6/n-3 ratio of polyunsaturated fatty acids in mutton was 2.84. The results indicated that the sheep fattening system had high feed conversion efficiency, could improve the yield and quality of sheep, and could be promoted in suitable regions.

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