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作 者:吴兆鹏[1] 蚁细苗[1] 钟映萍[1] 梁达奉[1,2] 谭文兴[1] 常国炜[1]
机构地区:[1]广州甘蔗糖业研究所、广东省甘蔗改良与生物炼制重点实验室,广东广州510316 [2]广西农垦糖业集团股份有限公司、广西糖业研发中心,广西南宁530002
出 处:《广西科学》2016年第1期51-55,共5页Guangxi Sciences
基 金:公益性行业(农业)科研专项经费(201403049)资助
摘 要:【目的】考察不同添加剂对甘蔗梢叶青贮营养价值的影响,为甘蔗梢叶高饲料化利用提供参考依据。【方法】采用单因素实验法考察尿素、糖蜜、乳酸菌液的添加和三者混合添加对甘蔗梢叶青贮营养价值的影响。【结果】不同的添加剂均能改善甘蔗梢叶青贮的营养品质。当尿素添加量为0.5%(W/W)时最佳,粗蛋白和粗脂肪含量分别提高34.68%和61.27%,半纤维素和中性洗涤纤维(NDF)分别降低10.67%和6.23%,差异极显著(P<0.01);当糖蜜添加量为15%(W/W)时最佳,粗蛋白和粗脂肪含量分别提高20.42%和36.42%,纤维素、NDF和酸性洗涤纤维(ADF)分别降低54.04%,28.30%和45.72%,差异极显著(P<0.01);单独添加乳酸菌对青贮影响不明显,差异不显著(P>0.05);同时添加0.5%(W/W)尿素、15%(W/W)糖蜜和5%(W/W)乳酸菌液青贮效果最佳,粗蛋白和粗脂肪含量分别提高85.92%和69.36%,纤维素、NDF和ADF分别降低38.94%,17.92和33.44%,差异极显著(P<0.01)。【结论】在甘蔗梢叶青贮时,同时添加尿素、糖蜜和乳酸菌,能有效降低其粗纤维含量,提高消化利用率。【Objective】This paper investigated the effects of different additives on the nutritional value of sugarcane tip silage in order to lay a solid foundation for efficient use of sugarcane tip silage.【Methods】The adding amount of urea,molasses,Lactobacillus and their mix on the nutritional value of sugarcane tip silage were examined by means of single factor experiment.【Results】Different additives can improve the nutritional value of sugarcane tip silage.When the best addition amount of urea was 0.5%(W/W),the contents of crude protein(CP)and crude fat(CF)were significantly increased by 34.68%and 61.27%,whereas the contents of hemicellulose(HC)and NDF were significantly decreased by 10.67% and 6.23%(P <0.01);When the best addition amount of molasses was15%(W/W),the contents of CP and ether extract(EE) were significantly increased by20.42% and 36.42%,whereas the contents of CP,NDF and ADF were significantly decreasedby 54.04%,28.30% and 45.72%,respectively(P <0.01).When Lactobacillus was added only,the impact was not obvious(P >0.05);when 0.5%(W/W)urea,15%(W/W)molasses and 5%(W/W)Lactobacillus were added together,the silage effect was the best,in which the contents of CP and EE were significantly increased by 85.92% and 69.36%,whereas the contents of CP,NDF and ADF were significantly decreased by 38.94%,17.92% and 33.44%,respectively(P <0.01).【Conclusion】Adding urea,molasses and Lactobacillusin sugarcane tip silage can availably reduce the content of crude fiber and improve digestibility of sugarcane tip.
分 类 号:X712[环境科学与工程—环境工程]
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