摘要
Abstract
Early embryonic death in dairy cows is a critical issue constraining reproductive efficiency on farms,with a prevalence rate of 20%～30%in Chinese dairy herds and annual economic losses exceeding tens of millions of yuan.This paper systematically analyzed the multifactorial interaction mechanisms leading to early embryonic death,including physiological,nutritional,pathogenic,and management-related factors.To address these causes,the study proposes an integrated prevention strategy comprising precision nutritional regulation,optimized reproductive management,enhanced disease control,and the application of new technologies.Practical implementation at a large-scale dairy farm demonstrated that these comprehensive measures significantly reduced embryonic mortality and improved economic outcomes.The research provided scientific evidence and practical techniques for reducing reproductive costs and enhancing production efficiency,offering significant implications for promoting sustainable development in the dairy industry.关键词
奶牛胚胎早期死亡/繁殖效率/多因素交互作用/精准营养调控/孕酮监测/热应激管理/BVDV防控/基因编辑/综合防控措施Key words
early embryonic death in dairy cows/reproductive efficiency/multifactorial interactions/precision nutritional regulation/progesterone monitoring/heat stress management/BVDV control/gene editing/integrated prevention measures
