添加剂对小黑麦发酵品质和饲用价值的影响  

The effect of additives on the fermentation quality and feeding value of triticale

作　　者：马淑梅 宋谦 张兰 余小亮 王纯喜 杜文华[2] MA Shumei;SONG Qian;ZHANG Lan;YU Xiaoliang;WANG Chunxi;DU Wenhua(Pingliang Academy of Agricultural Sciences,Pingliang,Gansu Province 744000,China;College of Pratacultural Science,Gansu Agricultural University,Lanzhou,Gansu Province 730070,China)

机构地区：[1]平凉市农业科学院,甘肃平凉744000 [2]甘肃农业大学草业学院,甘肃兰州730070

出　　处：《中国饲料》2024年第13期148-154,共7页China Feed

基　　金：甘肃省重点研发(23YFNL0003);平凉市科技计划(平科任自[2020]6号);平凉市农业科学院院列科技创新专项(2023PASS09);甘肃省现代农业科技支撑体系区域创新中心重点科技项目(2023GAAS03-3)。

摘　　要：为研究添加剂对小黑麦发酵品质和饲用价值的影响,试验采用两因素随机区组设计,选择3个品系小黑麦(C16、C27和C35)和添加剂(无添加剂和乳酸菌添加剂),比较乳酸菌添加剂对3个品系小黑麦青贮饲料发酵品质和饲用价值的影响。结果表明:在乳酸菌添加剂作用下小黑麦品系C27的感官总评分最高,为77.22,达到优质饲料标准;pH最低,为4.03,淀粉含量最高,为4.85,分别较C16和C35组增加了27.63%和78.31%,C27的NH3-N/TN显著低于C16和C35(P<0.05),较C16和C35分别减少了14.90%和3.33%。各品系的水溶性碳水化合物(WSC)含量均在5%以上,C27总可消化养分(TDN)、产奶净能(NEI)、维持净能(NEm)、增重净能(NEg)、相对饲料价值(RFV)、相对饲料品质(RFQ)和每吨饲料产奶量等饲用价值指标均高于C16和C35。从发酵品质和饲用价值综合考虑,在乳酸菌添加剂作用下C27的发酵品质和饲用价值均优于其他两个品系,更适宜于青贮调制。In order to investigate the effect of additives on the fermentation quality and feeding value of triticale,a two factor randomized block design was adopted in the experiment.Three strains of triticale(C16,C27 and C35)and additives(without additives and lactobacillus additives)were selected to compare the fermentation quality and feeding value of lactobacillus additives on the three strains of triticale silage feed.The results showed that under the action of lactic acid bacteria additives,the total sensory score of triticale strain C27 was the highest at 77.22,meeting the standard for high-quality feed;The lowest pH was 4.03,and the highest starch content was 4.85,which increased by 27.63%and 78.31%compared with the C16 and C35 groups,respectively.The NH3-N/TN of C27 was significantly lower than that of C16 and C35(P<0.05),and decreased by 14.90%and 3.33%compared with C16 and C35,respectively.The soluble crbohydrates(WSC)content of each strain was above 5%,and the total digestible nutrients(TDN),net energy produced(NEI),net energy maintained(NEm),net energy gain(NEg),relative feed value(RFV),relative feed quality(RFQ),and milk yield per ton of feed were all higher than those of C16 and C35.From the comprehensive consideration of fermentation quality and feed value,C27 had better fermentation quality and feed value than the other two strains under the action of lactic acid bacteria additives,making it more suitable for silage modulation.

关 键 词：小黑麦 乳酸菌添加剂 发酵品质 饲用价值 

分 类 号：S816.6[农业科学—饲料科学]