ANS 3216 Lecture Notes - Lecture 31: Luteinizing Hormone, Ovulation, Egg Cell
17 Jan 2016
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Document Summary
Behavior where a mare is sexually receptive to a stallion. Driven by estrogen: the rupture of the follicle on the ovary. The release of the ova (egg or oocyte) into the oviducts. Driven by a surge of luteinizing hormone (lh: the rupturing of the ovary follicle releasing high levels of estrogen. In breeding management, we want to breed the mare prior to ovulation: sperm cells should be available to fertilize the egg as soon as it gets into the oviducts. A tool that nearly every veterinarian will use at some point: has helped to revolutionize equine reproduction. Allows the breeder to follow a mare"s estrus cycle: can evaluate follicular growth which shows the timing for breeding, can diagnose pregnancy. Takes place in the ampulla (part of the oviducts: the site is quiet meaning there is not a lot of fluid, movement, timing so that capacitated (capable) sperm are present when the or contractions ova arrives.
