Effect of Lactobacillus plantarum inoculation and molasses supplementation to a rice straw-wheat bran-poultry manure silage on its fermentation characteristics
1989
Yoon, C.S. | Lee, N.H. (Korea Advanced Inst. of Science and Technology, Seoul (Korea R.)) | Cho, N.I. | Chee, K.M. (Korea Univ., Seoul (Korea R.). Coll. of Agriculture)
This study was conducted to investigate the effect of lactic acid bacteria (Lactobacillus plantarum) inoculation and supplemented molasses on the fermentation of silage containing poultry manure. Basal mixture of the silage consisted of rice straw pretreated with NaOH, wheat bran and poultry manure at a ratio of 50:30:20 on a dry weight basis, respectively. Lactic acid bacteria were inoculated at a level of 10** (5)/g silage. Molasses was added at a level of 7% by replacing wheat bran on a weight basis from the basal mixture. During a period of 30 days of fermentation, silages of various combinations were stored at two different environmental temperatures, i.e. 15 and 30deg C, to evaluate effects of supplemented lactic acid bacteria and molasses on the fermentation at a lower temperature. Samples were analyzed for pH and VFA content. In vivo nylon bag digestibilities of dry matter were also measured by using fistulated sheep. It appears that the fermentation pattern of simultaneous addition of lactic acid bacteria and molasses fermented the silages stored at 15deg C was almost similar to the same level of the silage of basal mixture fermented at 30deg C. Separately added bacteria or molasses were not quite effective in fermenting silages compared to those added with the two supplements at the same time at a lower temperature. Silages stored at 15deg C were not effectively fermented in terms of pH lowering effect, number of lactic acid bacteria and VFA production
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