摘要
本试验旨在探讨玉米浆与干稻秸以不同比例混合对黄贮饲料发酵品质和营养成分的影响.试验以水分含量为54.00％的玉米浆和水分含量为10.00％的干稻秸为原料,按玉米浆与干稻秸不同混合比例（1∶1、1∶2、1∶3和2∶1,鲜样质量比）分为4个组（Ⅰ～Ⅳ组）,每个组10个重复,在各组中添加等量的复合乳酸菌制剂,并调节水分含量为60.00％,常温贮存60 d后进行测定.结果表明：Ⅱ组的乳酸菌数量、乳酸和氨态氮含量显著高于其他各组（P＜0.05）;Ⅲ组的乙酸含量最高,与其他各组差异显著（P＜0.05）;Ⅳ组氨态氮/总氮最低,与其他各组差异显著（P＜0.05）;随着玉米浆添加量的增加,粗蛋白质含量显著升高（P＜0.05）,并显著降低了中性洗涤纤维、酸性洗涤纤维含量（P＜0.05）.综合各项指标,确定玉米浆与干稻秸采用1∶2的比例进行混合可得到品质较好的新型黄贮饲料.
This experiment was aimed to study the effects of mixing corn steep liquor （CSL） with dry rice straw （DRS） in different proportions on fermentation quality and nutrient composition of yellow rice straw silage feed.The ingredients of the test were CSL with the water content of 54.00% and DRS with the water content of 10.00%.There were 4 groups （groups Ⅰ to ⅣV） according to the mixing proportion of CSL and DRS （1∶1,1∶2,1∶3 and 2∶1,respectively,fresh sample mass proportion）,and each group had 10 replicates.Each group added the same number of compound Lactobacillus and adjusted the water content of 60.00%.All materials were detected after fermenting for 60 days at room temperature.The results of the experiment showed that the number of Lactobacillus,lactic acid and ammonia nitrogen （NH3-N） contents in group Ⅱ were significantly higher than those in other groups （P 〈 0.05）.Group Ⅲ had the highest acetic acid content,which was significant difference from the other groups （P 〈 0.05）.The NH3-N/total N in group Ⅳ was the lowest,which was significant difference from the other groups （P 〈 0.05）.With the increase of CSL supplement,the crude protein content was significantly increased （P 〈 0.05）,and the contents of neutral detergent fiber and acid detergent fiber were significantly reduced （P 〈 0.05）.Thus,the mixing proportion of 1∶2 is the ideal mixing proportion of CSL and DRS,which can get better quality new fermentation feed.
出处
《动物营养学报》
CAS
CSCD
北大核心
2013年第11期2682-2688,共7页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
国家科技部项目“寒区规模化奶牛场精细饲养与粗饲料高效利用技术集成与示范”(2012BAD12B05-1)
关键词
玉米浆
干稻秸
混合比例
发酵品质
corn steep liquor
dry rice straw
mixing proportion
fermentation quality
