AN S 226 Lecture Notes - Lecture 19: Estrous Cycle, Norgestomet, Feedlot
11 Apr 2019
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Document Summary
Ans 226 synchronization: describe 3 categories of synchronization protocols. Give product examples: name the main hormones involved and their main effect on the estrous cycle, choose method based on producer need. Improves labor use: facilitates ai, et, uniform calf crops closer in age, only 12% of us commercial herds synchronize breeding (nahms) 3 basic ways : do what , destroy the cl - with pgf2a, cause ovulation of dominant follicle - with gnrh. Lh : progesterone . preg, estradiol , gnrh , pgf2a . Matures selected follicles preovulatory surge causes ovum release. 21 day estrous cycle: note follicular waves, hormones and estrous cycle, top open circles represent the cl producing progesterone and suppressing dominant follicle from developing fully during each follicular wave. Protocols and products: with what , pgf2a. Lutalylse, estrumate, in-synch, prostamate: progestins, mga, cidr, prid, synchromate b, gnrh, cystorelin, factrel (dairy), fertagyl, three primary products to synch estrus or ovulation, prostaglandins.
