In order to understand the application effect of Dairy Herd Improvement(DHI)measurement on a large-scale dairy farm in Zhejiang province,this study sorted out the DHI data in 2022 and 2023,pre-processed them with Excel 2016,and performed variance analysis with SPSS 22.0.Quantitative indexes such as milk yield,milk fat rate,milk protein rate,305 days milk yield,somatic cell count and urea nitrogen of dairy cows were statistically and comparatively analyzed.The results showed that the average daily yield of dairy cows in this farm was 25.56kg/d,milk fat ratio was 4.51%,protein ratio was 3.59%,305 milk yield was 7 900kg,and the number of somatic cells per milliliter was 24.06×104,urea nitrogen was 15.62mg/dL,and lactation persistence was high.The analysis found that there were some problems in the diet composition and feeding management of this pasture,and the ration should be matched reasonably according to the parity,and the cattle should be updated and the feeding management should be strengthened.
关键词
DHI/乳脂率/体细胞数/产奶量
Key words
DHI/Milk fat percentage/Somatic cell count/Milk production
维普
万方数据