文献类型：期刊文献

中文题名：发酵时间对凤梨渣青贮品质的影响

英文题名：Effect of fermentation time on the quality of pineapple residue silage

作者：王志敬[1];吴征敏[2];葛影影[3];兰瑞霞[2];凡超杰[2];刘娟[2];吴浩浩[2];尹福泉[2]

机构：[1]清远市动物疫病预防控制中心,广东清远511518;[2]广东海洋大学农学院,广东湛江524000;[3]清远市农业科技推广服务中心,广东清远511518

年份：2019

卷号：36

期号：6

起止页码：1668

中文期刊名：草业科学

外文期刊名：Pratacultural Science

收录：CSTPCD、、CSCD2019_2020、CSCD

基金：广东省农业技术研发项目“菠萝渣饲料化资源技术研究(2018LM2174);广东海洋大学研究生教育创新计划资助项目(201832)

语种：中文

中文关键词：凤梨渣;青贮;品质;发酵时间;RFV

外文关键词：pineapple dregs;silage;quality;fermentation time;RFV

中文摘要：为了解不同发酵时间对凤梨(Ananas comosus)渣青贮品质的影响,进而在华南地区合理利用凤梨渣。本研究选择含水量为65%~70%的新鲜凤梨渣,填充于2.0L的密封塑料青贮容器,压实、封紧容器盖后于避光处室温保存,分别于1、2、3、4、5周时取样测定常规养分含量并计算相对饲喂价值。结果表明,青贮凤梨渣的干物质含量显著低于新鲜凤梨渣(P<0.05),随着发酵时间的延长,干物质(dry matter,DM)含量呈上升趋势,发酵第5周显著高于第2周(P<0.05),与第3、4周差异不显著(P>0.05);青贮凤梨渣粗纤维(crude fiber,CF)、粗蛋白(curde protein,CP)、粗灰分(Ash)、Ca和P含量均显著高于新鲜凤梨渣(P<0.05),随着发酵时间的延长CF呈下降趋势,第5周时最低,与第4周差异不显著(P>0.05);第4周的CP含量显著高于第1、2周(P<0.05),第2周的Ash含量最高,但与各个时间差异不显著(P>0.05),第4周Ca的含量最高(P<0.05)。青贮凤梨渣的pH显著低于新鲜凤梨渣(P<0.05),中性洗涤纤维(neutral detergent fiber,NDF)、酸性洗涤纤维(acid detergent fiber,ADF)含量显著高于新鲜凤梨渣(P<0.05);发酵第3、4和5周的pH和NDF相当(P>0.05);随着发酵时间的延长,干物质随意采食量(dry matter intake,DMI)、可消化干物质含量(digestible dry matter,DDM)和相对饲喂价值(relative feeding value,RFV)均呈增加趋势,发酵3、4和5周的DMI和RFV差异不显著(P>0.05),但均显著高于前两周(P<0.05)。综上,新鲜凤梨渣青贮4周(28d)即可开封利用。

外文摘要：To understand the effects of different fermentation times on the quality of pineapple residue silage,we examined pineapple residue in Southern China.Fresh pineapple residue containing 65% to 70% water was selected and placed in a sealed plastic silage container filled with 2 L.After compacting and sealing the lid,the container was kept in a light storage room.Nutrient content was measured,and the relative feeding value was calculated at 7,14,21,28,and 35 days after collection. Results show that the dry matter content of silage pineapple residue was significantly lower than that of fresh pineapple dregs (P < 0.05).With increased fermentation time,DM content increased,and fermentation in fifth week was significantly higher than in second week (P < 0.05).CF,CP,Ash,Ca,and P content in silage pineapple residue was significantly higher than that of new pineapple residue.Fresh pineapple dregs (P < 0.05) decreased with increased fermentation time,with the number of dregs observed in the fifth week and no significant difference from fourth week (P > 0.05).CP content in the fourth week was significantly higher than in the first two weeks (P < 0.05).Ash content was the highest during the second week,but significant differences were not observed.Ca content was the highest in the fourth week (P < 0.05).The pH of silage pineapple residue was significantly lower than that of fresh pineapple residue (P < 0.05).NDF (neutral detergent fiber) and ADF (acid detergent fiber) content was significantly higher than that of fresh pineapple residue (P < 0.05),and pH and NDF were equal (P < 0.05) during the third,fourth,and fifth weeks of fermentation.As fermentation time increased,DMI (dry matter intake),DDM (digestible dry matter),and RFV (relative feeding value) increased.There was no significant difference in DMI,DDM,and RFV between the third and fifth week of fermentation (P > 0.05),but the 3rd,4th,and 5th weeks were significantly higher than the first two weeks (P < 0.05).In summary,fresh pineapple residue can be used for feeding after 28 days in silage.