Case 2A - The ovarian cycle
16 important questions on Case 2A - The ovarian cycle
What is the period between two ovulations called?
How long in days is each phase of the oestrous cycle for a cow?
- Prooestrous= 3-4 days
- Oestrous= 12-18 days
- Metoestrous= 3-4 days
- Dioestrus= 10-14 days
How long is each phase of the oestrus cycle in days for a mare?
- Prooestrous= 2-3 days
- Oestrous= 96-192 days
- Metoestrous= 2-3 days
- Dioestrous= 2-3 days
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How long is each phase of the oestrous cycle in days for a sow?
- Prooestrous= 3-4
- Oestrous= 24-72
- Metoestrous= 2-3
- Dioestrous= 11-13
How long is the oestrous cycle for an ewe (female sheep)
Time oestrous cycle mare
metooestrus: 2-3 days
dioestrus: 10-12 days
proestrus: 2-3 days
oestrus: 96-192 hours
ovulation: 24-48 hours before end of oestrus
Time oestrous cycle sow
metooestrus: 2-3 days
dioestrus: 11-13 days
proestrus: 3-4 days
oestrus: 24-72 hours
ovulation: at two thirds of oestrus.
What are the three types of ovarion cycles in bonefish and birds ?
a. Often found in species that die after egg deposition (salmon).
2. Two developmental stages of oocytes are present during spawning. Ovary contains large mature oocytes and a large amount of small low yolk oocuytes.
a. Takes place in bone fish that egg deposition takes place once a year short period of time.
3. Oocyte development proceeds asynchronously. Ovary contains all phases of oocytes before the spawning period.
a. Spieceis have a long spawning period with more than one egg deposition.
How long does the formation of a chicken egg takes ?
What happens in the transition from dioestrous to prooestrous?
Is the time at which a chicken lays its egg always the same ?
How many types of ovarion cycles occur in bonefish?
How long after egg laying can another ovulation take place?
What is a requirement for an ovulation in a chicken?
When does LH secretion takes place in the chicken?
When does chickens show a laying cycle?
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