动物营养学报2018，Vol.30Issue(1)：293-298,6.DOI:10.3969/j.issn.1006-267x.2018.01.035
饲用苎麻青贮特性及其青贮前后营养成分与饲用价值比较
Feeding Ramie: Silage Characteristics and Comparison of Nutrient Composition and Feeding Value before and after Silage
摘要
Abstract
To explore the effects of different chop lengths on the silage quality of feeding ramie, three groups of feeding ramie were ensiled for 60 days with 1,2 and 3 cm,and then the experiment was conducted by sen-sory evaluation and laboratory analysis,and comparatively analyzed nutrient composition and feeding value be-fore and after silage. The results showed as follows:1)the fermentation quality grade of feeding ramie silage of 1 and 2 cm groups was excellent, whereas the 3 cm group was well. 2)There were no significant differ-ences on the ammonia nitrogen to total nitrogen and contents of acetic acid and propionic acid among 1,2 and 3 cm groups(P>0.05). The pH in feeding ramie silage of 2 cm group was significantly lower than that of 1 and 3 cm groups(P<0.05). The lactic acid content in feeding ramie silage of 2 cm group was significantly higher than that of 1 and 3 cm groups(P<0.05). 3)There were no significant differences on the contents of crude protein,ether extract,crude fiber,neutral detergent fiber and acid detergent fiber in feeding ramie before and after silage(P>0.05), but the crude ash content of 3 cm group was significantly lower than that of other groups(P<0.05),and the gross energy of 1 and 3 cm groups was significantly higher than that of 2 cm group and feeding ramie group before silage(P<0.05). 4)There were no significant differences on the roughage dry matter intake(DMI), digestible dry matter(DDM)and organic matter digestibility(OMD)in feeding ramie before and after silage(P>0.05). But the relative feed value(RFV)of 1 cm group was minimum and signifi-cantly lower than that of 2 cm group(P<0.05). Comprehensive analysis, the feeding ramie silage with 2 cm chop length has a high practical production value which with better fermentation effect, nutrient composition and feeding value.关键词
饲用苎麻/青贮/营养成分/饲用价值Key words
feeding ramie/silage/nutrient composition/feeding value分类
农业科技引用本文复制引用
王郝为,戴求仲,侯振平,王延周,吴端钦..饲用苎麻青贮特性及其青贮前后营养成分与饲用价值比较[J].动物营养学报,2018,30(1):293-298,6.基金项目
国家自然科学基金青年科学基金项目(31501988) （31501988）
湖南省重点研发计划(2016NK2170) （2016NK2170）
