Cyclicity Flashcards
what is the other well known reproductive cycle
menstrual cycle
what type of cycle do birds have
ovulatory cycle
birds have no pregnancy, so what does that lead to
no CL
if birds have no CL, what phases do they also not have
luteal phase
what is the only phase birds have
follicular phase
when will hens ovulate after oviposition
about 10-30 minutes after
how often are eggs typically oviposited
25-27 hours
oviposition
act of laying an egg
what represents the end of a hen’s cycle
once she lays an egg, then will start to repeat this process
about what time of day do hens oviposit
later each day
once egg is oviposited late in the afternoon
- no ovulation will occur
- hen will have skip day
clutch
pattern of egg laying from first oviposition through the pause day
young hen clutch has how many eggs
10-20
aged hen clutch has how many eggs
4-5
characteristics of young hens
- ovulate close to 10-minute mark
- oviposit eggs around 25 hours
characteristics of aged hens
- ovulate close to 30-minute mark
- oviposit eggs around 27 hours
season
several estrous cycles that occurring during a time period
polyestrus
many cycles
monoestrus
one cycle
anestrus
not cycling
what is predominant hormone elevated during estrus
estradiol
examples of polyestrus
cow
queen
pig
seasonal polyestrus long day
begins cycling as day length increases
examples of seasonal polyestrus long day
mare
