In order to study the effects of different mixed cropping modes of sweet sorghum and corn on silage quality and dairy production performance,the yield,silage quality,milk nutrients and benefits under the planting patterns of sweet sorghum zhongketian 968 and corn Suyu 29 at 1:1 and 1:2 ratio,as well as single crop and single harvest conditions were compared.The results showed that the yield of sweet sorghum was the highest in a single crop(6.3 t/667 m2),and the silage yield of sorghum corn(1:2)mode was lower than that of sorghum corn(1:1),and the yield of single corn was the lowest.The nutritional analysis of silage showed that the nutritional quality indicators of the single maize mode were relatively good.The sorghum maize(1:2)mode had the highest proportion of total digestible nutrients(79.00%),and starch content and milk net energy were also second only to single maize.The feeding test results showed that after the adaptation period,the experimental group fed with sorghum and corn(1:2)achieved the highest milk yield and milk quality.The sorghum corn(1:2)mode was the relatively optimal mode in the"Seed-Storage-Feed"mode,and the net energy of sorghum milk production was 2115.30 MJ/667 m2 higher than that of corn.In summary,the silage nutrition of sorghum corn in the 1:2 mode is more balanced and complementary than that of single corn silage,improving land use efficiency,feeding efficiency,and increasing economic benefits.It has good application prospects in the silage feed industry.
维普
万方数据