2019年河北省规模奶牛场全株玉米青贮质量监测情况

[目的]为了全面掌控河北省规模奶牛场全株玉米青贮饲料质量情况,为今后牧场玉米青贮制作提供科学依据.[方法]通过采用专业取样器对2019年河北省参加奶牛生产性能(DHI)测定的284个规模奶牛场全株玉米青贮进行现场采样,并将青贮样品冷藏送到饲料检测室,利用近红外技术准确、快速测定其干物质(DM)、中性洗涤纤维(NDF)、...

The Monitoring Qualities Of Whole Plant Corn Silage of Hebei Scale Dairy Farms In 2019

[Objective] In order to comprehensively control the quality of whole plant corn silage of Scale Dairy Farms in Hebei province, and to provide scientific basis for corn silage production in future.[methods] By using professional sampler to collect whole plant corn silages of 284 scale dairy farms that were participated in the determination of dairy production performance (DHI) in Hebei province in 2019,the silage samples were refrigerated and sent to the feed testing room,through using near infrared technology to accurately and quickly test the dry matter (DM),detergent fiber (NDF), acid detergent fiber (ADF), starch and other nutrition indicators, finally analyzed the test results. [result] The results showed: the quality of whole plant corn silage in Hebei scale dairy farms is at middle level in domestic, and have a high room to improve. The dry matter (34.06%), starch content (32.01%, dry matter basis) and lactation net energy (1.68 Mcal/kg) of the whole corn silage in Handan dairy farms reach the highest level and is relatively the best in Hebei province, while that is relatively poor in Qinhuangdao area.