草业学报2016，Vol.25Issue(6)：158-166,9.DOI:10.11686/cyxb2015398
笋壳替代全株玉米 TMR 发酵品质及有氧稳定性研究
Fermentation quality,nutritional values and aerobic stability of the total mixed ra-tion after replacing whole-plant corn with different proportions of bamboo shoot shell
摘要
Abstract
The objective of this experiment was to evaluate the effects of replacing whole-plant corn with differ-ent proportions of bamboo shoot shell (BSS)on the fermentation quality,nutritional value and aerobic stability of total mixed ration (TMR)silage.There were four treatments:0% BSS (control),15% BSS (15%),25%BSS (25%),35% BSS (35%).The silos were opened at 5,7,14,30 and 90 days after ensiling in order to de-termine the fermentation quality,nutritional and microbial compositions of the silages.Meanwhile,we esti-mated the aerobic stability of the silages in conjunction with recording of temperature variations using an online multi-channel data logger,and analyzed the chemical composition of samples taken at day 3,6,9 and 14 of aer-obic exposure.As the proportion of BSS increased,the lactic acid contents decreased gradually,the pH in-creased significantly (P <0.05)and the ammonia/total nitrogen ratios increased gradually during the ensiling. The 15% and 25% treatments still retained a good fermentation quality as indicated by high lactic acid contents (60.16-64.94 g/kg dry matter),low pH (4.15-4.20)values,low ammonia/total nitrogen ratios (55.56 -58.73 g/kg total nitrogen)and minor butyric acid contents (1.05 -1.47 g/kg dry matter).During the period of aerobic exposure,the initiation of aerobic deterioration of the control silage had occurred by day 9,as indica-ted by a dramatic rise in the pH and a decline in the lactic acid,acetic acid and water soluble carbohydrate con-tent,and the temperature increased more than 2℃ above the environment temperature after 195 h of exposure to air.However,for the BSS treatments,the increase in pH and the decline of lactic acid,acetic acid and water soluble carbohydrate contents occurred more slowly than in the control.In addition,the temperature of the si-lages containing BSS increased no more than 2℃ above the environment temperature within the 14 days of aero-bic exposure,which indicated that the BSS treatment significantly improved the aerobic stability compared to the control,but may have decreased the feeding value.Overall,the 15% and 25% treatments showed not only better fermentation quality but also higher aerobic stability compared to other BSS treatments.From the per-spective of maximizing the use of BSS resources,it is suggested that the most appropriate replacement level of BSS is 25% in whole-plant corn TMR silage.关键词
笋壳/全混合日粮/发酵品质/有氧稳定性Key words
bamboo shoot shell/total mixed ration/fermentation quality/aerobic stability引用本文复制引用
丁良,王坚,闻爱友,原现军,郭刚,李君风,白晰,白云峰,邵涛..笋壳替代全株玉米 TMR 发酵品质及有氧稳定性研究[J].草业学报,2016,25(6):158-166,9.基金项目
江苏省自主创新项目“以秸秆饲料化、基料化利用为核心的技术方案”（CX（15）1003）资助。 （）
