3.Acute Nutrition (ANSWER) ruminants have a more steady income of
nutrients; when rats were deprived of glucose, LH levels dropped- most
applicable to pigs/monogastrics
4.Long Term Nutrition (ANSWER) when fed above average, puberty is
attained earlier; if fed below average, puberty is attained later; nutrition
affects fat deposition and females need to have fat to draw from when
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13
, ANSC 333 Exam 2
Study online at
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pregnant
5.Kisspeptin neurons (ANSWER) receive signals from around the brain
and signals to release GnRH
6.Social Environment (ANSWER) larger groups of females achieve
puberty earlier; females housed near males achieve puberty earlier
(due to pheromones)
7.Pheromones (ANSWER) travel through the air to impact olfactory
senses; brings females into estrus faster; high growth rate plan and
housed with males led to earliest attainment of puberty
8.Photoperiod/Season (ANSWER) depends on specie; long day vs short
day breeders; off- spring born in the wrong season take longer to
attain puberty
9.polyestrus (ANSWER) multiple cycles at all times; cow, queen, sow
10.seasonal polyestrus (ANSWER) multiple cycles within a defined season
-long day mare
-short day (sheep, goat)
11.monoestrus (ANSWER) one cycle per year; dog, bear, wolf
12.Follicular Phase (ANSWER) Dominant
hormone (ANSWER) estrogen end of
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