Equine - Stallion BSE Flashcards
T/F: One nut equals no pass
True
If a stallion only has one testical, he should not pass the breeding soundness exam
Identify this piece of equipment:
Roanoke AV
__________ is a type of metritis in horses caused by Taylorella equigenitalis bacteria
Contagious equine metritis (CEM)
Which one of the following is not routinely performed during a breeding soundness examination of the stallion?
- Assessment of libido
- Evaluation of sperm motility
- Ultrasonographic assessment of the ampullae
- Karyotyping of the retrograde ejaculation
Karyotyping of the retrograde ejaculation
T/F: The SFT standards for stallion spermatozoa is the ability to ejaculate 1 billion progressively motile, morphologically normal spermatozoa in the second ejaculate (1 hour after the first), after 1 week of sexual rest
True
Which one of the following structures is not important for thermoregulation of the testes of stallions?
- Tunica vaginalis
- Tunica dartos
- Pampiniform plexus
- Cremaster muscle
Tunica vaginalis
The minimum number of spermatozoa required for mares to achieve satisfactory conception rates is:
500 million progressively motile sperm
What is the most common method for semen collection in the stallion?
Artificial vagina
When analyzing semen from a stallion, Alkaline Phosphatase (AlkP) greater than ______ indicates true ejaculate.
>3,000 U/L
Identify this piece of equipment:
Colorado AV
- Heavier, but retains temperature better (heat sink)
- Not as easy to manipulate stallion within AV
- Will fit inside of phantom so stallion can service it like a mare
T/F: The cause of CEM is Taylorella equigenitalis. It is a Gram negative coccobacillus
True
What is the etiologic agent of CEM?
Taylorella equigenitalis
Identify this piece of equipment:
Hannover AV
Small, less water, European
According to the Society for Theriogenology, what are the three potential scores that can be assigned after a breeding soundness examination in the stallion?
Satisfactory, Deferred or Unsatisfactory breeding prospect
Identify this piece of equipment:
Missouri AV
Lighter weight, Can manipulate stallion through AV easier
Identify structure ‘B’ on this impressively realistic diagram of the stallion genitalia:
Seminal Vesicle
What accessory gland in the stallion is most commonly affected by infection?
Vesicular glands
This accessory sex gland in the stallion is an enlargement of the ductus deferens:
ampulla
Identify structure ‘D’ on this impressively realistic diagram of the stallion genitalia:
Prostate
The nucleocounter uses _________ to stain the DNA of cells
Propidium Iodine (PI)
Chemical ejaculation in the stallion is accomplished by administration of _________, followed two hours later by Xylaxine
Imipramine
- Imipramine lowers ejaculatory threshold
- 3-5 mg/kg orally followed in 2 h by Xylazine - 0.66 mg/kg IV
Identify this piece of equipment:
Japanese AV - Nishikawa
Which of the following is false regarding the Sperm Chromatin Structure Assay (SCSA)?
- It assesses sperm morphology
- It assesses the amount of DNA fragmentation
- The percent of chromatin acid denaturation is negatively correlated with fertility
- Two of the above
It assesses sperm morphology
How many days of daily semen collection are required to deplete the extragonadal sperm reserves in a stallion in order to estimate his daily sperm production?
5-7 days
T/F: The stallion has a penis that becomes engorged with confetti during erection
False
The stallion has a penis that becomes engorged with blood during erection. The stallion has a musculocavernous penis.
Identify the abnormality
Proximal droplet
