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Chapter 5: The Estrus Cycle

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Across
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5-7 months old at puberty
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15-36 months old at puberty (Tristan should know this one)
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Animals that breed when the environment will allow for the best survival of the young at their birth.
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Begins with the regression of the corpus luteum and drop in progesterone and extends to the start of estrus.
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In females is defined as the age at the first expressed estrus with ovulation.
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Long-day of spring breeders
Down
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Characterized as the period in the cycle when the corpus luteum is fully functional.
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Begins with the cessation of estrus and lasts about 3 days.
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10-15 months old at puberty
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7-10 months old at puberty
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What has a dominant role in regulating the estrus cycle.
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15-24 months old at puberty
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The period of time when the female is receptive to the male and will stand for mating.
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Short-day or fall breeders