REVISION QUESTIONS Flashcards
(168 cards)
Inducing an artificial luteal phase with lower than luteal progesterone concentration can cause a. Prolonged follicular dominance, oocyte degeneration and reduced fertility b. seasonal anoestrous c. Positive feedback to the hypothalamus and hyperstimulation of the ovaries d. Stimulation FSH and LH release inducing emergence of a new follicular wave e. Ovulation induction through the stimulation of an LH surge from the pituitary gland
a. Prolonged follicular dominance, oocyte degeneration and reduced fertility
From the following, which statement explains the rationality of using oestrogens in an oestrous synchronisation protocol a. Supress progesterone and stimulate FSH to induce oestrus b. Stimulate an LH surge to initiate a new follicular phase in 3 to 5 days c. Supress follicular development and hastens the emergence of a new follicular wave d. Stimulate follicular development reducing the time to ovulation and emergence of a new follicular wave e. Supress progesterone and stimulate the LH surge to cause ovulation
c. Supress follicular development and hastens the emergence of a new follicular wave
During a 200 day pregnancy examination you diagnose a mummified foetus. What is the drug or drugs of choice to treat this condition a. Prostaglandins b. Prostaglandins + Dexamethasone c. Dexamethasone d. Oestrogen + Prostaglandins e. Oestrogen + Dexamethasone
a. Prostaglandins (not dexamethasone as don’t need to trigger foetal stress because its already dead!)
You receive a call from a client to do pregnancy diagnosis in beef cattle herd 60 days after they have been with the bull. You palpate the herd and find about 50% of cows open and a respresentative number of cows with pyometra. This scenario may suggests involvement of what agent? a. Tritrichomonas b. Letospira c. Campylobacter d. Neospora e. Brucella
a. Tritrichomonas
Neospora canis is an important cause of reproductive failures in cattle . What route of transmission is the most important one within a herd? a. Mixing with intermediate hosts b. Cow to Cow c. Ingestion of contaminated food water d. persistently infected cow e. Venereal
d. persistently infected cow Endogenous transplacental transmission –> get congenitally infected calves that increase level of background abortions i.e. also called persistently infected calves, BVDV
Oestrus suppression in the bitch can be done a. Using megestrol acetate orally b. Using testosterone injections c. Using androgens orally d. More than one of these answers is correct e. None of the answers is correct
d. More than one of these answers is correct
Owner of a dog calls you about 6 weeks after it was bred because it looks fat and has been feeling bad. She may be drinking more water than usual and urinated in the house (ver odd for this dog). The other vet told them the dog was not pregnant last week. Your primary rule out at this time is: a. pyometra b. Whelping c. Pseudogenetra d. Metritis e. Gastritis
a. pyometra 6 weeks ago she was in dioestrus –> want to mate her next heat
An owner calls you and tells you that they just saw their dog get bred by an unwanted male. They want to know what to do. What are the options you recommend for this mismated female? a. do a pregnancy exam about 30 days after breeding and give dexamethasone for at least 10 days or until pregnancy is terminated if pregnant b. Do a pregnancy exam about 30 days after breeding and give ECP if she is pregnant c. Do a pregnancy exam about 30 days after breeding and give dexamethasone for no more than 3 days if she is pregnant d. Do a pregnancy exam about 30 days after breeding and give prostaglandin for no more than 3 days if pregnant e. Just give GnRH for at least 10 days
a. do a pregnancy exam about 30 days after breeding and give dexamethasone for at least 10 days or until pregnancy is terminated if pregnant
A client calls you because she has bred 4 queens in the last month with the same tom, and none of them have become pregnant. She wants you to investigate the tom’s ability to produce semen. Which of the following methods can you use to determine if semen is being produced by the tom a. Any of the answers show the presence of sperm production b. collect semen with an artificial vagina c. collect semen with an electroejaculater d. collect semen from the queen’s vagina after breeding e. collect urine via cystocentesis to check for sperm
a. Any of the answers show the presence of sperm production (remember that this was all the options, not which is the best)
To check for sperm production in a tom cat a. You can check the urine to check for retrograde ejaculation b. You must collect semen with an artificial vagina c. You must collect semen with an electroejaculator d. Is not possible because of the spines on the penis e. Run a thyroid hormone panel
a. You can check the urine to check for retrograde ejaculation
Most common neoplasia affecting the stallion penis a. Squamous cell carcinomas b. Melanomas c. Sarcoids d. Papillomas
a. Squamous cell carcinomas
- You are managing a thoroughbred stud farm that has 10 stallions. The number of broodmares in the farm is 200 and the stallion also service outside mares. How can you estimate the number of mares you can booked to each stallion? a. Calculate the extra-gonadal sperm reserves b. Perform a BSE and calculate the daily sperm output (DSO) c. Do nothing, last season the stallion bred more than 500 mares d. Collect the stallion and divide the ejaculate to inseminate seasonal mares
b. Perform a BSE and calculate the daily sperm output (DSO)
From the following, select the horse breed in which artificial inseminations not performed a. Standardbred b. Quarter horse c. Andalusian d. Thoroughbred
d. Thoroughbred
- Priapism in stallions is a condition commonly associated with the administration of a. Acepromazine b. Xylazine c. Butorphanol d. Benzotropine mesylate
a. Acepromazine
Hematocele or hydrocele affect spermatogenesis by a. Leydig cell beome refractory to FSH b. Affecting testicular movement within the scrotum c. Affecting testicular thermoregulation d. Blockage of the ductus deferens
c. Affecting testicular thermoregulation
Treatment of stallions harbouring Taylorella euigenitalis consit of a. Scrubbing the penis with chlorohexidine and application of nitrofurazone ointment b. Rinse with sterile saline solution and administration of penicillin c. No treatment needed, the infection is self-limiting d. There is no treatment of Taylorella equigenitalis
a. Scrubbing the penis with chlorohexidine and application of nitrofurazone ointment
Hormones that initiate the emergence of a new follicular wave in cattle a. FSH b. Estrogen c. LH d. Progesterone
a. FSH
Method to collect semen from a stallion a. Articial vagina b. Chemical ejaculation c. Use of a condom d. All are correct
d. All are correct
In regards to cyclicity, mares are considered a. Seasonal polyoestrous (long day breeders) b. Seasonal polyoestrus (short day breeders) c. Monoestrous d. Polyoestrous
a. Seasonal polyoestrous (long day breeders)
What characterise the vernal transition period? a. Shorter follicular and luteal phase b. Irregular oestrus behaviour c. Mares are not receptive to stallions d. Lack of FSH release by the adenohyophysis
b. Irregular oestrus behaviour
- In equine pregnancy the feto-placental unit become steroidogenically competent to maintain pregnancy at how many days?
120-150 days
How to determine serving capacity?
Physical examination and semen evaluation
Most common bacterial isolate associated with equine placentits
Strep. Equi
Mare has ultrasound 18 days post ovulation, is diagnosed with unilateral twins, recommendation?
Recheck the mare in couple of days. Mare are very efficient at reducing unilateral twins to a single pregnancy
