水葫芦与玉米秸秆混合青贮的研究  

Use of Mixed Silage of Water Hyacinth and Corn Straw as Feed Sources

作　　者：庄益芬[1] 陈鑫珠[2] 廖惠珍[1] 张文昌[1] 

机构地区：[1]福建农林大学动物科学学院,福州350002 [2]华南农业大学农学院,广州510642

出　　处：《动物营养学报》2011年第9期1615-1621,共7页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：福建省教育厅科技项目(JK2009010)资助

摘　　要：本试验旨在利用水葫芦(water hyacinth)调制出优质青贮。试验共分24(2×3×4)个处理,每个处理3个重复,以2种水分(约40%和50%)的原料,按3种混合比例(晾晒后的水葫芦与玉米秸秆质量比分别为9∶1、8∶2和7∶3)制成共6种原料混合物,每种混合物中不添加或分别添加2 mL/kg绿汁发酵液、3 mL/kg蚁酸和3 mL/kg四蚁酸铵后进行青贮。常温发酵60 d,测定青贮的pH、氨态氮浓度以及乳酸、乙酸、丙酸和丁酸的含量。结果表明:降低原料水分显著提高了青贮的pH(P<0.05)、显著减少了乳酸生成(P<0.05);随玉米秸秆比例的升高,青贮pH有不同程度的下降;3种添加剂也都不同程度地改善了青贮品质。综合而言,原料水分50%、水葫芦与玉米秸秆混合比例7∶3,并以绿汁发酵液作为添加剂的青贮的品质最优。The study was conducted to produce high quality silage with water hyacinth.It consisted of 24（2×3×4） treatments with 3 replicates in each,six kinds of mixture were made from ingredients with two moistures（about 40% and 50%） according to three mixed ratios（mass of water hyacinth and corn straw after dried in the sun were 9∶ 1,8∶ 2 and 7∶ 3）.After supplemented with no additive,2 mL/kg fermented green juice,3 mL/kg formic acid and 3 mL/kg foraform,respectively,the mixture were fermented.The fermentation lasted for 60 d in normal temperature.Silages were determined for pH,ammoniacal nitrogen（NH3-N） concentration,contents of lactic acid,acetic acid,propionic acid and butyric acid.The results showed as follows： the decreasing of moisture of ingredients significantly increased the pH（P0.05）,but significantly decreased the production of lactic acid（P0.05）in silages;with the increasing of corn straw＇s rate,the pH of silage decreased at different levels;supplementation of the three additives also improved the quality of silages in varying degrees.In conclusion,the mixed silage with 50% moisture,7∶ 3 mass ratios of water hyacinth to corn straw and supplemented with 2 mL/kg fermented green juice has the best silage quality.

关 键 词：水葫芦 玉米秸秆 混合青贮 混合比例 绿汁发酵液 

分 类 号：S816.53[农业科学—饲料科学]