家畜生态学报2024，Vol.45Issue(8)：28-32,5.DOI:10.3969/j.issn.1673-1182.2024.08.005
添加残次香梨发酵物对玉米秸秆青贮饲料体外发酵的影响
Effect of Adding Defective Pear Fermentated Substance on the Corn Stalks Silage In Vitro Fermentation
摘要
Abstract
The experiment aimed to evaluate the effect of adding defective pear fermentated substance on the in vitro fermentation of corn stalks silage through the determination of the 72 h gas production(GP),fermentation parameters,gas production parameters,dry matter degradation(DMD),neutral de-tergent fiber degradation(NDFD)and acid detergent fiber degradation(ADFD)of corn stalks silage.The results showed that the in vitro fermentation of corn stalks silage and its degradation rate were improved,the pH of the fermentation broth ranged from 6.43 to 6.86.Except for the non-significant difference in gas production rate(c),GP,fast gas production fraction(a),slow gas production fraction(b),potential gas production(a+b),DMD,NDFD,ADFD increased with the proportion of defective pear fermentated sub-stance added at 72 h,but DMD,NDFD,ADFD no longer increased significantly when the defective pear fermentated substance reached 60％.The concentration of ammoniacal nitrogen(NH3-N)tended to de-crease and then increase;however,acetic acid,propionic acid,butyric acid and total volatile fatty acids(TVFA)reached their highest levels when the defective pear fermentated substance reached 50％.It can be seen that the addition of defective pear fermentated substance to corn stalks for silage can improve its in vitro degradation characteristics,the addition of no more than 60％is appropriate.关键词
残次香梨发酵物/玉米秸秆/产气特性/发酵参数Key words
defective pear fermentated substance/corn stalks/gas production characteristics/fermen-tation parameters分类
农业科技引用本文复制引用
郭睿,陈亚飞,周慧杰,蒋涛,王栋,蒋慧,艾琪..添加残次香梨发酵物对玉米秸秆青贮饲料体外发酵的影响[J].家畜生态学报,2024,45(8):28-32,5.基金项目
教育部基本科研业务费-对口支援科研合作基金项目(2019TC156) （2019TC156）
中国农业大学-塔里木大学联合基金项目(ZNLH201902) （ZNLH201902）
兵团财政科技计划资助(2021DB015). （2021DB015）
