Effects of the Application of Lactobacillus plantarum Inoculant and Potassium Sorbate on the Fermentation Quality, In Vitro Digestibility and Aerobic Stability of Total Mixed Ration Silage Based on Alfalfa Silage

Animals

Shengyang Xu¹  Yixiao Xie¹  Jinze Bao¹  Zhu Yu¹  Tingting Jia¹  Zhe Wu¹  Wenqi Li¹  Musen Wang² 

[1] College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China;State Key Laboratory of Grassland and Agro-Ecosystems, School of Life Sciences, Lanzhou 730000, China;

关键词: TMR silage;    potassium sorbate;    Lactobacillus plantarum;    fermentation quality;    in vitro digestibility;    aerobic stability;   

DOI  :  10.3390/ani10122229

来源: DOAJ

【 摘 要 】

This study aimed to evaluate the effect of the application of an inoculant and a preservative on the fermentation quality, in vitro digestibility, and aerobic stability of alfalfa silage-based fermented total mixed ration (TMR). The TMR was ensiled with (1) no additives (control), (2) Lactobacillus plantarum (LP), or (3) potassium sorbate (PS). The V-scores of all silages were higher than 80 points during the 30 days of ensiling. The addition of LP and PS had no effects on the in vitro parameters, such as in vitro digestibility and in vitro gas production (p > 0.05). LP-treated silage showed similar fermentation quality and comparable aerobic stability to the control (110 h). The LP only decreased the ammonia nitrogen (NH₃-N) content (p < 0.05) during ensiling. The PS significantly increased the pH of TMR silages (p < 0.05). Meanwhile, the addition of PS improved the aerobic stability (>162 h) of TMR silage, indicated by the higher water-soluble carbohydrate content and lower NH₃-N content in comparison with those in the control after aerobic exposure (p < 0.05). The improvement in fermentation quality is extremely small in terms of applying LP in TMR silage based on a large percentage of other silage ingredients. The PS is effective in conserving unpacked TMR silage and showed the potential to reduce the risk of ruminal acidosis in livestock.

【 授权许可】

Unknown