Variations in the milk lipidomic profile of lactating dairy cows fed the diets containing alfalfa hay versus alfalfa silage

文献类型： 外文期刊

第一作者： Liu, Kaizhen

作者： Liu, Kaizhen;Chen, Meiqing;Huang, Guoxin;Su, Chuanyou;Tang, Wenhao;Li, Ning;Yang, Jiyong;Wu, Xufang;Si, Boxue;Zhao, Shengguo;Zheng, Nan;Zhang, Yangdong;Wang, Jiaqi;Liu, Kaizhen;Su, Chuanyou;Liu, Kaizhen;Chen, Meiqing;Huang, Guoxin;Su, Chuanyou;Tang, Wenhao;Li, Ning;Yang, Jiyong;Wu, Xufang;Si, Boxue;Zhao, Shengguo;Zheng, Nan;Zhang, Yangdong;Wang, Jiaqi

作者机构：

关键词： Dairy cow; Alfalfa silage; Alfalfa hay; Milk fat; Lipidomic profile; Fatty acid

期刊名称：ANIMAL NUTRITION （ 影响因子：7.5； 五年影响因子：7.3 ）

ISSN： 2405-6383

年卷期： 2024 年 19 卷

页码：

收录情况： SCI

摘要： Alfalfa is primarily stored as silage or hay in livestock production. Previous research has shown that the storage method of grass significantly influences milk composition. This study aimed to investigate milk production performance and lipid composition in dairy cows fed diets consisting of alfalfa hay or alfalfa silage as roughage. Forty-two mid-lactation Holstein dairy cows were selected and randomly divided into three groups, each receiving a total mixed ration consisting of alfalfa hay (AH), 50% alfalfa silage + 50% alfalfa hay (AHAS), or alfalfa silage (AS). The results showed that milk fat content (P = 0.049) and milk fat yield (P < 0.001) were significantly higher in the AH and AHAS groups compared to the AH group. With increased supplementation of alfalfa silage in the diet, omega-3 polyunsaturated fatty acid content increased significantly (P < 0.001), while omega-6 polyunsaturated fatty acid content (P = 0.007) and the ratio of omega-6 to omega-3 polyunsaturated fatty acids decreased (P < 0.001). The contents of sphingomyelins, phosphatidylserines, phosphatidylethanolamines, and phosphatidylglycerols in the AHAS and AS samples were higher than in the AH samples, although the differences were not statistically significant. Additionally, the content of phosphatidylcholines was significantly higher in the AS group compared to the AH group (P = 0.032). In conclusion, feeding dairy cows a diet consisting of alfalfa silage can increase the major phospholipid content and polyunsaturated fatty acid composition in raw milk, which is more conducive to human health. These findings provide valuable insights into the benefits of alfalfa silage for dairy cows. (c) 2024 The Authors. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/bync-nd/4.0/).

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序