Oestrus Cycles Flashcards
When does the first oestrus cycle normally happen?
Queen
At 6-9 months.
How many stages does this cycle have?
Queen
Six.
What hormones are released in pro-oestrus?
Queen
Luteinising hormone (LH) and follicle stimulating hormone (FSH).
How long does pro-oestrus last for?
Queen
2-3 days.
How long does oestrus last for?
Queen
Can be from 2-10 days.
Average is 7 days.
In interestrus, what happens if ovulation does not occur?
Queen
The Queen has a period of quiet for 3-14 days.
How long does pregnancy/diodes true last for?
Queen
35-40 days.
In anoestrus, are the ovaries active or inactive?
Inactive.
When does anoestrus usually occur?
In the winter season.
How many cycles can a canine have in one year?
1 or 2.
When will a canine have her first oestrus cycle?
Usually 6 months after reaching adult height and weight.
Name the five stages of the oestrus cycle.
Pro-oestrus, oestrus, metestrus, anoestrus, ‘POMA’.
How long does pro-oestrus last for?
Canine
9 days.
What hormone is increased in pro-oestrus?
What hormone is decreased in pro-oestrus?
Increase in the luteinising hormone (LH).
Decrease in the follicle stimulating hormone (FSH).
How long does oestrus last for?
Canine
9 days.
