Oestrus Cycle Flashcards
Pro-Oestrus phase
preparatory stage
4-14 days (9 average)
FSH and Oestrogen
Oestrus phase
Period of ovulation and sexual receptivity
4-21 days (9 average)
Luteinizing (LH)
Met-oestrus phase
Uterus prepares for pregnancy, maintains pregnancy
60 days (2 months)
Progesterone
Prolactin
Anoestrus phase
Reproductive dormancy
100+ (varies between breed)
Proestrus clinical signs
-intrested in male dogs but wont mate
-Serosangunious discharge
-Vulval enlargement
Oestrus clinical signs
-Straw coloured discharge
-Male acceptance
Metoestrus clinical signs
-Will no longer mate
-Mammary development
-Pregnancy (if fertilised)
Anoestrus clinical signs
Reproductively dormant
Canine breeding cycle
-Monoesters (1 oestrus cycle per breeding season)
-Non seasonal
-Every 6 months average
-Spontaneous ovulation
Feline breeding cycle
- Induced ovulation
-Polyoestrous (long day breeders)
-Seasonal polyoestrous
-hit puberty between 4-18 months
Caring for pregnant cat
- 65 days gestation
-Increase nutrition from early pregnancy
-Vaccination pre-mating
Caring for pregnant dog
-63 days gestation
-Nutrition does not change till last trimester
-vaccination pre-mating
Phantom pregnancy
- Elevated progesterone during metoestrus, physical changes
-Clinical signs include mammary enlargement, behavioural changes
Progesterone
Maintains pregnancy
Luteinising hormone (LH)
causes ovulation and the development of corpus luteum
Oestrogen
Involved in female reproductive behaviour
Prolactin
Causes milk development
Oxytocin
Causes uterine contraction and ‘milk let down’
