Effects of protein grass hay as alternative feed resource on lamb's fattening performance and meat quality

文献类型： 外文期刊

第一作者： Zhang, Yanmei

作者： Zhang, Yanmei;Ma, Ruicong;Zhang, Naifeng;Tu, Yan;Diao, Qiyu;Ma, Tao;Bi, Yanliang;Chen, Bo;Zhou, Wei;Chen, Huaisen;Chen, Kai;Ma, Hong;Guo, Yajuan

作者机构：

关键词： Alfalfa hay; Protein grass hay; Meat quality; Fattening performance; Fatty acid profile; Amino acid profile

期刊名称：MEAT SCIENCE （ 影响因子：6.1； 五年影响因子：6.8 ）

ISSN： 0309-1740

年卷期： 2024 年 218 卷

页码：

收录情况： SCI

摘要： Protein grass hay (PGH) was used as a new feed source for lambs to study its effect on fattening performance and meat quality. Fifty-six male lambs were allotted to four experimental groups and fed for eight weeks either alfalfa hay (AH)-based diet (control) or diets in which AH was replaced with 33 %, 66 %, or 99 % PGH. The inclusion of PGH did not affect final body weight, dry matter intake, average daily gain, feed conversion ratio, or carcass weight. Moreover, substituting AH with PGH at any level did not influence the ruminal fermentation or serum biochemical parameters, meat color, water holding capacity, shear force, or amino acid profile. However, relative liver weight was increased with 66 % substitutions. Furthermore, replacing 99 % AH with PGH decreased the meat's pH at 24 h. Higher levels of C18:3n-3, C20:5n-3, and total n-3 PUFA and a lower ratio of n6: n-3 PUFA were also observed in meat from lambs fed PGH at 99 %. These findings suggest that PGH could be incorporated into the lamb's diet up to 99 % without compromising fattening performance and body health while improving their meat n-3 PUFA deposition.

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