苜蓿与燕麦混合比例对饲草型发酵全混合日粮营养成分、发酵品质及饲用价值的影响

Effect of mixing ratio of Medicago sativa and Avena sativa L.on nutritional quality,fermentation quality and feed value of forage-type fermented total mixed ration

试验旨在研究苜蓿与燕麦混合比例对饲草型发酵全混合日粮(FTMR)营养成分、发酵品质及饲用价值的影响。试验设置苜蓿、燕麦、玉米秸秆、天然牧草、精料的比例分别为29:35:7:4:25(FTMR1组)、30:30:10:4:26(FTMR2组)、34:29:7:4:26(FTMR3组)、35:26:9:4:26(FTMR4组)、39:25:6:4:26(FTMR5组),配制5组FTMR。常温发酵60d。结果显示,FTMR1组日粮的粗蛋白质含量显著高于FTMR5组(P<0.05)。FTMR3组、FTMR4组日粮的中性洗涤纤维、酸性洗涤纤维含量均显著低于FTMR1组(P<0.05)。FTMR3组日粮的氨态氮含量显著高于其他组(P<0.05)。FTMR2组、FTMR4组日粮的丁酸含量显著低于其他组(P<0.05)。FTMR3组、FTMR4组日粮的饲用价值显著高于FTMR1组(P<0.05)。研究表明,FTMR4组饲草型FTMR的营养成分、发酵品质及饲用价值较高,适合在内蒙古地区使用。

The experiment was to investigate effect of mixing ratio of Medicago sativa and Avena sativa L.on nutritional content,fermentation quality and feed value of forage-type FTMR.The experiment set the ratio of Medicago sativa,Avena sativa L.,corn straw were 29:35:7:4:25(FTMR1 group),30:30:10:4:26(FTMR2 group),34:29:7:4:26(FTMR3 group),35:26:9:4:26(FTMR4 group),39:25:6:4:26(FTMR5 group),respectively,to prepare five groups of FTMR.The FTMR were fermented at room temperature for 60 d.The results showed that the crude protein content of FTMR1 group was significantly higher than that of FTMR5 group(P<0.05).The content of neutral detergent fiber and acid detergent fiber content of FTMR3 group and FTMR4 group were significantly lower than that of FTMR1 group(P<0.05).The ammonia nitrogen content of FTMR3 group was significantly higher than that of other groups(P<0.05).The butyric acid content of FTMR2 group and FTMR4 group were significantly lower than that of other groups(P<0.05).The feeding value of FTMR3 group and FTMR4 group were significantly higher than that of FTMR1 group(P<0.05).The experiment indicates that nutritional content,fermentation quality and feeding value of FTMR4 group forage-type fermented total mixed ratio are relatively high,which is suitable for using in Inner Mongolia.