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* The luteolytic mechanism is similar to in the cow.
 
* The luteolytic mechanism is similar to in the cow.
 
** At the end of dioestrus, under the influence of oestradiol and progesterone, there is an increase in the number of uterine oxytocin receptors.
 
** At the end of dioestrus, under the influence of oestradiol and progesterone, there is an increase in the number of uterine oxytocin receptors.
** At the same time, the corpus luteum produces oxytocin, which stimulates PGF2PGF2 then acts to stimulate the release of oxytocin in a feedback loop mechanism.
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** At the same time, the corpus luteum produces oxytocin, which stimulates PGF2αPGF2α then acts to stimulate the release of oxytocin in a feedback loop mechanism.
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* The first corpora lutea formed after the first ovulation at the start of the breeding season have a shorter lifespan than subsequent ones.
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* In twin ovulations, the two corpora lutea can occupy the same or opposite ovaries.
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* During pregnancy:
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** The corpus luteum is 0.7-0.9 cm in diameter.
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** It is pale pink in colour
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** The central cavity that is seen in cyclic corpora lutea has disappeared and is filled with white tissue.
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* Ovulation with corpus luteum formation but without heat may occur in the anoestrus period.  This is known as spurious ovulation.
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* The number of ova shed at each oestrus is dependent on genetic and nutritional factors.
    
=== Endocrine Changes during the Oestrous Cycle ===
 
=== Endocrine Changes during the Oestrous Cycle ===
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