Diseases Of The Bull Flashcards
What is the cause of penile papilloma?
Bovine papilloma virus
Clinical signs of penile papilloma?
Scant hemorrhage after coitus
Hesitancy to extend penis/breed
Usually a single, pedunculated growth
Treatment of a penile papilloma?
Surgical excision
— towel clamp, tourniquet, local anesthetic, 10fr male dog catheter
Complications of surgical excision of a penile papilloma?
Recurrence
Urethral injury
What is a penile hair ring?
Body hair accumulation on penis
Complications due to hair rings?
Necrosis of urethra —> fistula
Amputation of glans penis
Causes of a persistent frenulum?
Incomplete separation of penis and prepuce
Penis can extend but frenulum causes ventral deviation
Treatment of persistent frenulum?
Surgical excision.
Towel clamp, local anesthetic , suture
What can predispose to preputial trauma/laceration?
Excessive pendulous sheath
Excessive preputial length
Large preputial orifice
DDX for swelling of the preputial sheath?
Trauma
Hematoma
Retropreputial abscess
Urethral rupture
What are etiologies of preputial laceration?
Excess prepuce forced caudally during intromission
Forms collar of tissue
Trappped between builds abdomen and cows bony pelvis
Laceration on ventral surface occurring during ejaculatory lunge
Lacerated longitudinal to long axis of prepuce
Heals transversely as bull retracts penis
What speices of cow is more likely to retract the penis and prepuce into the sheath after laceration, leading to adhesions and abscess formation?
Bos Taurus
What is the conservative therapy for preputial laceration?
Clean damaged tissues
Emollient ointment “Petercillin”
-2g tetracycline powder, 60ml scarlet oil, and 500g anhydrous lanolin
Bandages and slings
What are the pre-surgical therapies for preputial lacerations?
Reduce edema
- hydrotherapy
- pressure bandage
- slinging prepuce with burlap material
Petercillin
Prophylactic antibiotics
What are the possible surgical managements for preputial laceration?
Resection and anastomosis (circumcision)
Amputation of affected prepuce — plastic ring technique
Preputial reconstruction (scar revision)
What are the keys to success in preputial resection and anastomosis?
Aseptic technique
Hemostasis
Avoid urine contamination
60-120days sexual rest post op
What is the maximum amount of prepuce that can be removed?
Remaining prepuce should be minimum of 1 1/2 times the length of the free portion of penis
What surgical technique would be indicated for a bull in limited facilities and of low economic value ?
Plastic ring —> polyvinyl tubing placed into preputial prolapse -> ligating sutures —> amputate prepuce —> remove ring in 2 weeks
Where are penile hematoma most commonly located?
Dorsal aspect of distal sigmoid flexor, insertion of retractor penis mm.
Clinical signs of penile hematoma
Swelling in sheath immediately cranial to base of scrotum
Usually symmetrical swelling
Will not want to breed
Medical treatment for penile hematoma?
Absolute sexual rest for 60days
Systemic antibiotics
50% return to service
Hydrotherapy
Treat prepuce if necessary
What is the surgical treatment of penile hematoma?
Preform surgery 3-7 days after injury —> 80% return to service
Heavy sedation or general anesthesia
Repair defect in tunica albuginea
—> bootlace pattern
Post-operative antibiotics
Treat prepuce as necessary
Minimum 60days sexual rest
What is a preputial avulsion ?
Prepuce torn form connection to free portion of penis
Seen in stud bulls with AV
What causes an S-shaped deviation of the penis?
Apical ligament is too short
What causes a ventral deviation of the penis?
Apical ligament is too long
What can cause a vesiculitis?
B abortus
A pyogenes
H somnus
Rx: with tetracycline
T/F: epididymitis is usually unilateral
True
Epididymis will be small, hard, and misshapen
