Term
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Definition
estrus-noun
The cow displayed estrus.
estrous-adjective
The estrous cycle is 21 days long |
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Term
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Definition
| a period when cyclicity stops |
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Term
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Definition
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Term
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Definition
sheep (short day)
mare (long day) |
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Term
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Definition
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Term
| when is the follicular phase |
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Definition
regression fo the corpus luteum to ovulation
primary ovarian structure is the antral follicles
primary hormone is estradiol |
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Term
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Definition
period form ovulation until the coprus luteum regresses
primary ovarian structure is the corpus leuteum
primary hormone is progesterone |
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Term
| four stages of estrous cycle |
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Definition
| proestrus, estrus, metestrus, and diestrus |
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Term
| what happens in proestrus |
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Definition
progesterone declines, and estrodiol increases
FSH and LH are responsible for this transition
**formation of follicles and E2 secretions |
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Term
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Definition
displays sexual receptivity and estrogen peak
lordosis-mating posture |
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Term
| what happens in metestrus |
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Definition
| period between ovulation and formation of corpus luteum. progesterone secretion begins to raise and estrogen begins to lower. |
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Term
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Definition
| longest stage and its when the corpus luteum is functional and progesterone secretion is at its peak |
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Term
| how does the cycle of the bitch and queen differ from other animals |
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Definition
| they go through a period of anestrus, proestrus, estrus, and diestrus |
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Term
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Definition
| multiple ovulations in dog produce multiple oocytes during a single estrus period |
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Term
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Definition
| pregnancy, lactation, presence of offspring, season, stress, pathology |
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Term
| what is a silent ovulation |
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Definition
| the first ovulation after anestrus (no progesterone) where it doesnt display behavioral estrus |
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Term
| What 2 factors influence the onset of the breeding season |
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Definition
| photoperiod and temperature. |
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Term
| length of estrus and estrous |
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Definition
Cow Ewe Sow Mare
Estrous cycle (days) 21 17 21 21
Estrus (hours) 12-18,24-36,48-72,4-8 days |
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Term
| what differs short day and long day breeder response |
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Definition
| related to genetic differences in the responsiveness of kisspeptin to RFRP-3 |
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Term
| what is responsible for lactational anestrus |
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Definition
| some mammory stimulation, but could also be visual, olfactory, etc |
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Term
| what is the average length for the mestrual cycle |
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Definition
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Term
| how does the menstrual cycle differ from estrus |
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Definition
no defined period of sexual receptivity
endometrial sloughing
timeline beings with menses, not ovulation |
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Term
| what makes up the follicular phase and luteal phase in the menstrual cycle |
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Definition
follicular= menses (5 days)+ proliferative phase (9 days)
luteal phase= secretory phase (14 days) |
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Term
| what happens in the follicular phase of menstrual |
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Definition
| peak in LH and estrogen, ovulation occurs at this peak |
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Term
| what happens in the luteal phase of menstrual |
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Definition
progesterone peak, with high levels of estrogen and inhibin
endometrium gets to max thickness |
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Term
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Definition
| human equivalent to anestrus |
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