Improvement of feed intake, digestibility, plasma metabolites, and lactation performance of dairy cows fed mixed silage of sugar beet pulp and rice straw inoculated with lactic acid bacteria

文献类型： 外文期刊

第一作者： Wang, Y.

作者： Wang, Y.;Liu, J.;Liu, X. L.;Guo, J. H.;Wang, Y.;Li, Y. J.;Zhang, Y. G.;Xia, K.;Wang, X. N.;Lin, X.;Zhao, W. J.

作者机构：

关键词： sugar beet pulp; mixture silage; inoculation; milk yield; milk protein

期刊名称：JOURNAL OF DAIRY SCIENCE （ 影响因子：4.225； 五年影响因子：4.987 ）

ISSN： 0022-0302

年卷期： 2022 年 105 卷 1 期

页码：

收录情况： SCI

摘要： A study was conducted to investigate the inclusion effects of sugar beet pulp and rice straw mixture silage with inoculation (BRMS), in place of whole-plant corn silage (CS), on the dry matter intake, total-tract nutri-ent digestibility, plasma metabolites, rumen fermenta-tion, and lactation performance in high-production dairy cows. Sixteen multiparous Holstein cows (body weight, 622 +/- 35 kg; days in milk, 90 +/- 11 d; mean +/- standard deviation) were used in our experiments; the experiments were based on a repeated 4 x 4 Latin square design for 21 d, and each experimental period consisted of 14 d of adaptation, followed by 7 d of data collection. The 4 dietary treatments used were (dry matter basis): (1) 0% BRMS and 28.6% CS (0BRMS); (2) 4.3% BRMS and 24.3% CS (15BRMS); (3) 8.60% BRMS and 20.0% CS (30BRMS); and (4) 12.9% BRMS and 15.7% CS (45BRMS). The increasing inclusion of dietary BRMS was observed to linearly increase the to-tal volatile fatty acids and the propionate concentration. The dry matter intake and digestibility values of neu-tral detergent fiber and acid detergent fiber increased linearly as the percentage of BRMS increased up to 45%. Milk yield linearly increased with the increase in the content of BRMS (39.0, 39.8, 40.9, and 40.3 kg/d for 0BRMS, 15BRMS, 30BRMS, and 45BRMS, re-spectively). The increasing inclusion of dietary BRMS induced a decrease in the ammonia nitrogen and milk urea nitrogen concentration, leading to a linear increase in milk protein production (1.15, 1.26, 1.35, and 1.27 kg/d for 0BRMS, 15BRMS, 30BRMS, and 45BRMS, respectively). In conclusion, the diets with the replace-ment of CS with BRMS up to 45% were beneficial to the production performance of high-production dairy cows, indicating that this method may be an appropri-ate use of sugar beet pulp and rice straw.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序