Effects Of Organic Acid And Its Salt On Quality And Aerobic Stability Of Alfalfa Silage

In order to explore the effect of different concentrations of organic acids and their salts on the quality and aerobic stability of alfalfa mixed silage,80% alfalfa + 5% rice straw and15% corn flour mixed raw materials were added with different concentrations of organic acids and their contents Salt is used for mixed silage,and the addition amount of formic acid(88%),acetic acid(36%)and propionic acid(≥99.5%)is 2 ml / kg,4 ml / kg,6 ml / kg,8 ml/ kg,10 ml / kg;dicarboxylic acid Potassium(> 98%)is 2.5 g / kg,4 g / kg,5.5 g / kg,7 g /kg,8.5 g / kg;sodium diacetate(> 98%)is 4 g / kg,5.5 g / kg,7 g / kg,8.5 g / kg,10 g / kg;calcium propionate(> 98%)is 7 g / kg,8.5 g / kg,10 g / kg.Make 5 repetitions for each mixed silage.After 30 days,the sensory quality,fermentation quality,nutritional quality and aerobic stability of the mixed silage were measured,and the optimal concentration and additives of 5 kinds of organic acids / salts were analyzed.The suitable additives and additions were recommended for the production of mixed alfalfa in southern China concentration.the result shows:(1)Formic acid,acetic acid,propionic acid,potassium diformate,sodium diacetate,and calcium propionate with different added concentrations can improve the sensory quality,fermentation quality,nutritional quality and availability of alfalfa,rice straw and corn meal mixed silage Oxygen stability;the most suitable formic acid concentration is 6 ml / kg,the most suitable for acetic acid amount is 4 ml / kg;(2)The optimal addition concentration of potassium diformate is 7 g / kg;the addition concentration of sodium diacetate is 11.5 g / kg;there is no significant difference between the treatment groups with different addition levels of calcium propionate,and the addition of calcium propionate is recommended in terms of economic efficiency The concentration is 7g / kg.(3)Combining the effects of various organic acids / salts on the fermentation quality and aerobic stability of alfalfa,rice straw and corn meal mixed silage,the 6 ml / kg formic acid treatment group had the best effect on alfalfa mixed silage.