Day 1 8.26.09

Day 1 8.26.09 - ANS 315R Reproduction in Farm Animals Day...

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ANS 315R Reproduction in Farm Animals Day 1- 8/26/09 Going over quiz: 1. Estrogen from a follicle actually promotes the ovulatory surge of luteinizing hormone. TRUE . (Except in primates, it is concealed) -Mare is ovulating day before she goes out of heat, or day 10. -most animals ovulate sometime during estrus 2. Hormones bind to specific receptors that transducer the hormonal stimulus to some specific cellular response. TRUE -Tissues have receptors for hormones 3. Sperm swim to the site of fertilization. FALSE . -Sperm only live 20 hours and travel a very short distance. -Sperm reach site of fertilization in 2-4 minutes because they are moved there by involuntary muscle contractions in the female. So animal has to be in a low stress situation. 4. Males with identical semen quality have the same fertility within a species. FALSE . -Proteins, mood and libido all play effect into fertilization 5. The process of birth is initiated by the fetus. TRUE . -Fetus through it’s adrenal glands(Fight or flight corticosteroids in the mom’s
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Day 1 8.26.09 - ANS 315R Reproduction in Farm Animals Day...

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