Effects of different additives on fermentation quality and aerobic stability of a total mixed ration prepared with local feed resources on Tibetan plateau
文献类型： 外文期刊
作者： Dong, Zhihao 1 ; Zhao, Jie 1 ; Chen, Sifan 1 ; Bao, Yuhong 2 ; Tao, Xuxiong 1 ; Wang, Siran 1 ; Li, Junfeng 1 ; Liu, Qinh 1 ;
作者机构： 1.Nanjing Agr Univ, Coll Agrograssland Sci, Inst Ensiling & Proc Grass, Nanjing 210095, Jiangsu, Peoples R China
2.Tibet Acad Agr & Anim Husb Sci, Inst Grassland Sci, Lhasa, Peoples R China
关键词： additive; aerobic stability; Tibetan plateau; total mixed ration
期刊名称：ANIMAL SCIENCE JOURNAL （ 影响因子：1.749； 五年影响因子：1.909 ）
ISSN： 1344-3941
年卷期： 2020 年 91 卷 1 期
页码：
收录情况： SCI
摘要： To improve the utilization efficiency of total mixed ration (TMR) on Tibetan plateau, the effects of different additives on fermentation quality and aerobic stability of the ensiled TMR prepared with local feed resources were studied. A total of 150 experimental silos were prepared in a completely randomized design to evaluate the following treatments: (a) control; (b) Lactobacillus buchneri; (c) acetic acid; (d) propionic acid; (e) 1,2-propanediol; and (f) 1-propanol. After 90 days of ensiling, silos were opened for fermentation quality and in vitro parameters analysis, and then subjected to an aerobic stability test for 14 days. The acetic acid, 1,2-propanediol and 1-propanol treatments increased (p <.05) pH and acetic acid content, and lowered (p <.05) the lactic acid production in comparison to control. There were no statistically significant differences in in vitro digestibility parameters among the treatments. Treatments of acetic acid, 1,2-propanediol and 1-propanol substantially improved the aerobic stability of the ensiled TMR, as indicated by almost unchanged pH and lactic acid contents throughout the aerobic exposure test. These results indicated that acetic acid, 1,2-propanediol and 1-propanol had no adverse effect on in vitro digestibility and could be effective additives for enhancing the aerobic stability of ensiled TMR prepared on Tibetan plateau.
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