Canine and Feline Pregnancy Flashcards
(34 cards)
From the LH surge, what is the gestation length of a canine pregnancy?
64-66 days
From ovulation, what is the gestation length of a canine pregnancy?
62-64 days
What type of placenta do bitches have?
Endotheliochorial/zonary
What is haemodilution?
Decreased haematocrit
What is an essential pregnancy hormone?
Progesterone
What happens to progesterone levels 1-2 days prior to whelping?
Sharp decline
Where in the body is prolactin produced?
Pituitary gland
What hormone is responsible for the maintenance of the CL?
Prolactin
Where is relaxin produced in the body?
Placenta
What hormone prepares the birth canal for parturition?
Relaxin
What is the most commonly used method of pregnancy diagnosis in the canine?
Transabdominal ultrasound
How many days after the LH surge can the foetal heartbeat be detected via ultrasound in canines?
23 - 25 days
How many days after the LH surge can the foetal skeleton be detected via ultrasound in the bitch?
33 - 39 days
What does. a body temperature drop by 1-2 degrees indicate in the bitch?
Bitch is close to whelping
Prior to whelping, do relaxin levels increase or decrease?
Increase
Prior to whelping, P4 _____ and prolactin ______ (inverse relationship)
Prior to whelping, P4 decreases and prolactin increases (inverse relationship)
How many days is a feline pregnancy gestation?
65 - 67 days
How many days into feline gestation does P4 peak?
25 - 30 days
Which hormone begins to rise on day 35 of feline gestation?
Prolactin
After how many days post-coitus can palpation be used in cats to determine pregnancy diagnosis?
21-25 days
After how many days post coitus is a relaxin assay reliable as a method of pregnancy diagnosis in felines?
> 28 days
When is an ultrasound done post coitus in a feline?
16-25 days
When can a foetal heart beat be determined in a feline ultrasound?
25 days post coitus
What pregnancy diagnostic method can be used to determine litter size 38 days post coitus in the feline?
Radiographs