POUL 4060 Lecture Notes - Lecture 17: Follicular Phase, Prolactin, Sexual Conflict

• School: University of Georgia
• Department: Poultry Science
• Course: POUL 4060
• Professor: Davis

Document Summary

**synchronous hatch has better survivability, but most birds have asynchrony hatches. As a result, she can"t incubate until last egg produced. Resulting in synchronist hatching: hormones, prolactin induces incubation behavior and turns off follicular development, most species who lay large clutches of eggs, don"t start incubating immediately. If prolactin is super high to start incubation, this will shut down fsh and. Lh, thus, no follicular development: most bird species who produces large clutches of eggs, start incubating on the. 2nd to last egg b/c don"t want to shut off follicular development: egg viability, first egg does need incubation immediately especially on large clutches because it"s hatchability/survivability decreases, egg protection, predators. If have a lot of predators around, you don"t want to leave nest/egg unprotected. As a result, you are more likely to start incubation sooner vs later. However, if bird only produces 2 eggs, they will guard the egg but not incubate it yet (pigeons).