Effect of adding coenzyme and lactic acid bacteria on fermentation quality of mixed silages of tall fescue (Festuca arundinacea) and common vetch (Vicia sativa) in tibet

Abstract

Abstract: The aim of this study is to evaluate the effects of adding coenzyme, LAB and their combinations on the fermentation qualities and residual water soluble carbohydrates of mixed silages of common vetch and tall fescue during ensiling. The treatments were as follows: control (C),coenzyme (E), LAB, coenzyme+LAB(E+LAB), these silos were opened on 7, 24 and 60 days after ensiling and the fermentation quality was analyzed. Compared to the control silage, adding of E and LAB were efficient in improving the fermentation quality of mixed silages, and the combination addition further increased the LA content and decreased the pH value. The E combination treatments including the E alone showed higher acetic acid and total volatile fatty acids contents as compared with the control and LAB treated silages, the propionic and butyric acid were hardly found in all silages during ensiling. The combination treated silages showed highest water soluble carbohydrate content and lowest ammonia nitrogen/total nitrogen through the whole ensiling. These indicated that the E and LAB were of synergistic effects on the fermentation quality. From the above results it was suggested that the combination addition of coenzyme and LAB is better for improving the fermentation quality of mixed silages of common vetch and tall fescue in this experiment.

CLC Number:

S816.6

WANG Qi, YU Cheng-qun, LI Zhi-hua, ZHAO Qing-jie, Masataka Shimojo, SHAO Tao. Effect of adding coenzyme and lactic acid bacteria on fermentation quality of mixed silages of tall fescue (Festuca arundinacea) and common vetch (Vicia sativa) in tibet[J]. Acta Prataculturae Sinica, 2012, 21(4): 186-191.

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