Lamb Graham Clifford, Mercadante Vitor R G
North Florida Research and Education Center, University of Florida, 3925 Highway 71, Marianna, FL 32446, USA.
Department of Animal and Poultry Sciences, Virginia Tech, 3470 Litton Reaves Hall, Blacksburg, VA 24061, USA.
Vet Clin North Am Food Anim Pract. 2016 Jul;32(2):335-47. doi: 10.1016/j.cvfa.2016.01.006. Epub 2016 Apr 29.
Utilization of estrus or ovulation synchronization and fixed-timed artificial insemination (TAI) has facilitated the widespread utilization of artificial insemination (AI) and can greatly impact the economic viability of cow-calf systems by enhancing weaning weights. Implementation of TAI programs by beef producers results in limited frequency of handling cattle and elimination of the need to detect estrus. Continued use of intensive reproductive management tools such as estrus synchronization and AI will result positive changes to calving distribution, pregnancy rates, and subsequent calf value.
发情或排卵同步化以及定时人工授精（TAI）的应用，促进了人工授精（AI）的广泛使用，并且通过提高断奶体重，能够极大地影响肉牛繁育体系的经济可行性。肉牛生产者实施定时人工授精计划，可减少处理牛只的频率，并消除发情检测的需求。持续使用诸如发情同步化和人工授精等强化繁殖管理工具，将给产犊分布、妊娠率以及后续犊牛价值带来积极变化。
