全株大豆和玉米秸秆混合青贮试验

为研究不同比例的全株大豆和玉米秸秆混合青贮对营养成分、发酵品质、能量值的影响,试验分为5个处理组,全株大豆与玉米秸秆的比例分别为1:0、2:1、1:1、1:2、0:1,每组3个重复.结果表明:与玉米秸秆相比,全株大豆与玉米秸秆1:1混合青贮的粗蛋白质、粗脂肪、赖氨酸、钙的含量以及干物质体外消化率分别提高了55.89％、...

Study on the mixed silage of whole plant soybean and corn stalk

In order to investigate the effects of different ratio of whole plant soybean and corn stalk on nutrient composition,fermentation quality and energetic value,whole plant soybean and corn stalk were mixed and ensiled at the follwing ratios of 1∶0,2∶1,1∶1,1∶2,0∶1,with 3 replicates per group.The results showed that the mixed silage of whole plant soybean and corn stalk 1∶1 increased the contents of crude protein(CP),ether extract(EE),lysine(Lys),calcium(Ca),the in vitro digestibility of dry matter(IVDMD)by 55.89%,192.10%,107.69%,250.00%and 6.52%(P<0.05)respectively,and significantly reduced the contents of ash,neutral detergent fiber(NDF),acid detergent fiber(ADF),acid detergent ligin(ADL)and water-soluble carbohydrate(WSC)(P<0.05)compared with corn stalk.Compared wih the whole plant soybean,the mixed silage of whole plant soybean and corn stalk 1∶1 significantly increased content of lactic acid(LA)by 34.65%(P<0.05),net energy for lactation(NEL)and net energy for maintenance(NEM)(P<0.05),and significantly reduced the content of acetic acid(AA)and butyric acid(BA),and pH(P<0.05).It was suggested that the 1:1 mixed ratio of whole plant soybean and corn stalk was best for improving fermentation quality and nutrient composition.