亚硫酸钠对甜高粱青贮品质及有氧稳定性的影响  

Effects of Sodium Sulfite on Quality and Aerobic Stability of Sorghum bicolor Silage

作　　者：胡逸飞 王奕博 苏威 尹航 王冬 孙娟娟[3] 薛艳林 白春生[1] 玉柱[5] HU Yifei;WANG Yibo;SU Wei;YIN Hang;WANG Dong;SUN Juanjuan;XUE Yanlin;BAI Chunsheng;YU Zhu(College of Horticulture,Shenyang Agricultural University,Liaoning Shenyang 110161,China;Liaoning Agricultural Credit Financing Guarantee Company Limited,Liaoning Shenyang 110000,China;Institute of Grassland Research,Chinese Academy of Agricultural Sciences,Inner Mongolia Hohhot 010010,China;Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Inner Mongolia Hohhot 010031,China;College of Pratacultural Science and Technology,China Agricultural University,Beijing 100193,China)

机构地区：[1]沈阳农业大学园艺学院,辽宁沈阳110161 [2]辽宁省农业信贷融资担保有限责任公司,辽宁沈阳110000 [3]中国农业科学院草原研究所,内蒙古呼和浩特010010 [4]内蒙古自治区农牧业科学院,内蒙古呼和浩特010031 [5]中国农业大学草业科学与技术学院,北京100193

出　　处：《饲料工业》2024年第5期91-96,共6页Feed Industry

基　　金：国家自然科学基金[31872422];辽宁省教育厅项目[LJKMZ20221021]。

摘　　要：为研究亚硫酸钠对甜高粱(Sorghum bicolor)青贮品质及有氧稳定性的影响,试验以甜高粱为原料,分别添加0、0.1、0.2、0.3 g/kg亚硫酸钠调制青贮饲料,青贮50 d后开封,测定青贮饲料的发酵品质、营养成分、微生物数量,并测定青贮饲料有氧腐败情况。结果表明:与对照组相比,添加亚硫酸钠对pH无显著影响(P>0.05),但显著增加了乳酸含量(P<0.05),对乙酸和氨态氮含量也有不同程度的增加作用;0.3 g/kg亚硫酸钠显著降低了甜高粱青贮饲料的中性洗涤纤维、酸性洗涤纤维含量(P<0.05);各浓度亚硫酸钠均显著降低了甜高粱青贮饲料硝酸盐含量(P<0.05);亚硫酸钠对大肠杆菌有较好的抑制作用;0.1、0.2 g/kg亚硫酸钠组有氧稳定性显著高于对照组(P<0.05);在有氧暴露期间,0.1 g/kg亚硫酸钠组的pH保持良好,且乳酸与乙酸含量显著高于对照(P<0.05)。综合分析,添加亚硫酸钠能改善甜高粱青贮品质,同时具有提高有氧稳定性的作用,添加量以0.1~0.2 g/kg为宜。In order to study the effects of sodium sulfite on the quality and aerobic stability of sweet sor-ghum(Sorghum bicolor)silage,the experiment took sweet sorghum as raw material,adding 0,0.1,0.2,0.3 g/kg sodium sulfite to prepare silage,it was opened 50 days later to determine the fermentation qual-ity,nutrient composition,microbial quantity of the silage and the aerobic decay of silage was measured.The results showed that:compared with the control group,the addition of sodium sulfite had no signifi-cant effect on pH(P>0.05),but significantly increased the content of lactic acid(P<0.05),and also in-creased the content of acetic acid and ammonia nitrogen to varying degrees;the 0.3 g/kg sodium sulfite significantly decreased the contents of neutral detergent fiber and acid detergent fiber in sweet sorghum silage(P<0.05);all the concentrations of sodium sulfite significantly decreased the nitrate content of sweet sorghum silage(P<0.05).Sodium sulfite has a good inhibition effect on Coliform bacteria.The aerobic stability of 0.1 and 0.2 g/kg sodium sulfite treatment was significantly higher than that of the control group(P<0.05).During the aerobic exposure period,the pH of 0.1 g/kg sodium sulfite treatment group remained good,and the contents of lactic acid and acetic acid were significantly higher than that of the control group(P<0.05).By compre-hensive analysis,the addition of sodium sulfite could improve the nutritional quality of sweet sorghum si-lage,and has the effect of improving the aerobic stability.The appropriate dosage was 0.1-0.2 g/kg.

关 键 词：甜高粱 青贮 亚硫酸钠 青贮品质 有氧稳定性 

分 类 号：S816.9[农业科学—饲料科学]