Page 490 - Anatomy and Physiology of Farm Animals, 8th Edition

Chapter 27

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The Ovary and Estrous Cycles

Oogenesis Learning Objectives
Secondary Follicles
Hormones and Follicular Development • Define and be able to explain the signifi-
Ovulation cance of the bold italic terms in this
chapter.
Luteinizing Hormone Surge • Describe the role of follicle‐stimulating
Spontaneous and Reflex Ovulators hormone and luteinizing hormone in
Seasonal Transition the two‐cell mechanism for follicular
Corpus Luteum development.
Phases of the Estrous Cycle • Explain the role of estrogen in initiating
Proestrus the luteinizing hormone surge and ovula-
tion. How is this different during seasonal
Estrus transition or in reflex ovulators?
Metestrus • Illustrate the phases of the estrous cycle,
Diestrus and Anestrus including the primary endocrine events
Puberty and ovarian structures.
Specifics of Selected Estrous Cycles • Describe the origin, demise, and endo-
crinology of the corpus luteum.
Mare • Review the specifics of the estrous cycles
Cow of the mare, cow, ewe, and sow.
Ewe • Compare and contrast how gamete
Sow formation and the phases of meiosis
differ in the male versus female.

Anatomy and Physiology of Farm Animals, Eighth Edition. Anna Dee Fails and Christianne Magee.
© 2018 John Wiley & Sons, Inc. Published 2018 by John Wiley & Sons, Inc.
Companion website: www.wiley.com/go/fails/anatomy

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