Repro formative MCQ Flashcards
To which group of hormones does equine chorionic gonadotropin (eCG) belong?
- Preparations that replace or supplement anterior pituitary hormones.
- Pituitary hormones: TSH, FAH, LH, prolactin, GH, ACTH
- eCG=PMSG
- produced by endometrial cups 40-130 days in gestation
- GnRH (hypothalamus) stimulates pituitary
- Only LH activity in the mare, both (LH&FSH) in other species
To which class of drug does clenbuterol (uterine spasmolytic), which is used to aid in obstetrical manoeuvres, belong?
β2-adrenoreceptor agonist.
You decide to give 0.1mg/kg of preservative free morphine (1% solution) to a 30kg greyhound dog
undergoing a caesarian.
What is the correct volume of morphine required for this dog?
0.3ml.
A 1% (w/v) concentration is obtained by dissolving 1 g of substance in a final volume of 100 ml solution
1 g =1000 mg
1 g/100ml = 1000mg/100ml=10mg/ml
Dog needs 30kg*0.1mg/kg= 3 mg = 0.3ml
1%=10mg/ml
An owner of an entire male guinea pig with anorexia brings you the object shown in the photo above
(next to the scalpel handle) which he found on the floor of the cage.
What is it?
spermatic plug, copulation plug
Which one of the following statements in relation to reproductive endocrinology of the bitch is correct?
- Administration of a progesterone-receptor blocker produces an increase in progesterone concentration
- Administration of a progesterone-receptor blocker produces no change in progesterone concentration
- Administration of a progesterone-receptor blocker produces a decrease in progesterone
- Administration of a progesterone-receptor blocker produces a decrease in prolactin concentration
Administration of a progesterone-receptor blocker produces no change in progesteroneconcentration
Which one of the following statements in relation to reproductive physiology of the bitch is correct?
- Acceptance of mating can be reliably used to determine the onset of ovulation
- Increased oestrogen concentrations can be reliably used to determine the onset of ovulation
- Increased progesterone concentrations can be reliably used to determine the onset of ovulation
- Counting the number of days from the onset of proestrous behaviour can be reliably used to determine the onset of ovulation
Increased progesterone concentrations can be reliably used to determine the onset of
ovulation
Which statement best reflects the endocrinological situation in a bitch that has been spayed and
therefore has no ovaries?
- Increased concentrations of FSH, LH and Oestrogen.
- Decreased concentrations of Progesterone, Oestrogen and GnRH.
- Increased concentrations of FSH, LH and Progesterone.
- Increased concentrations of LH, GnRH and FSH.
- Decreased concentrations of GnRH, LH and FSH.
Increased concentrations of LH, GnRH and FSH.
You examine a bitch to determine the optimal time to breed and take a blood sample for progesterone
measurement. Progesterone concentrations on the ELISA kit are ‘high’ and you advise mating
immediately. However the bitch refuses to stand. Vaginal cytology shows 5% parabasal, 15% small
intermediate, 40% large intermediate, 40% anuclear epithelial cells, with 10 polymorphonuclear
leucocytes per high power field.
Which one of the following is the most likely diagnosis?
- The bitch has ovulated and the fertilisation period has ended
- The bitch has ovulated today and should be mated in 2 days time
- The bitch is in oestrus but for behavioural reasons will not stand and so should be inseminated
- The bitch is still in early proestrus and should be re-examined in 2-3 days
The bitch has ovulated and the fertilisation period has ended
Which one of the following statements in relation to reproductive endocrinology of the bitch is correct?
- Administration of a GnRH superagonist implant is useful for induction of oestrus and ovulation
- Administration of a GnRH superagonist implant is useful prevention of oestrus
- Administration of a prostaglandin is useful for induction of oestrus and ovulation
- Administration of a prostaglandin is useful prevention of oestrus
Administration of a GnRH superagonist implant is useful prevention of oestrus
Which one of the following statements in relation to reproductive endocrinology of the bitch is correct?
- Administration of a prolactin inhibitor in the luteal phase causes a decrease in progesterone concentrations
- Administration of a prolactin inhibitor in the luteal phase causes an increase in progesterone concentrations
- Administration of a progestogen in the luteal phase causes an increase in prolactin concentrations
- Administration of a prostaglandin in the luteal phase causes a decrease in prolactin concentrations
Administration of a prolactin inhibitor in the luteal phase causes a decrease in progesterone
concentrations
This drug would most likely induce ovulation in a mare with a 36mm follicle identified on
palpation and ultrasonography per rectum.
Human chorionic gonadotrophin
This drug would most likely result in luteolysis in a mare with a corpus luteum that has been
identified in the ovary using ultrasound 7 days previously.
Prostaglandin F2-alpha analogue
A treatment protocol including this drug would most likely result in the development of a preovulatory
follicle and subsequent ovulation in a mare in the transitional period.
Progesterone analogue
It is the actual removal that causes the desired effect
This ultrasound image shows a transverse view of a mare’s uterus taken as part of a pre-breeding
examination.
What is the correct description of the findings from this ultrasound?
There is uterine oedema present and the mare is in oestrus.
Pre-breeding examination of the mare should include assessment of the conformation of the
perineum. Correctly describe the conformation of the mare in the photograph above.
The ruler is present to represent the horizontal axis and the position of the anus with respect to the vulva.
You are not expected to make any measurements from the ruler.
This mare has abnormal conformation, 50% of the vulva is ventral to the pelvic brim and there
is a slight gap at the vulval lips.
sloping, slight gap, position of vulva related to ischium
