Diseases Of The Bull

Question 1

What is the cause of penile papilloma?

Answer 1

Bovine papilloma virus

Question 2

Clinical signs of penile papilloma?

Answer 2

Scant hemorrhage after coitus
Hesitancy to extend penis/breed
Usually a single, pedunculated growth

Question 3

Treatment of a penile papilloma?

Answer 3

Surgical excision

— towel clamp, tourniquet, local anesthetic, 10fr male dog catheter

Question 4

Complications of surgical excision of a penile papilloma?

Answer 4

Recurrence

Urethral injury

Question 5

What is a penile hair ring?

Answer 5

Body hair accumulation on penis

Question 6

Complications due to hair rings?

Answer 6

Necrosis of urethra —> fistula

Amputation of glans penis

Question 7

Causes of a persistent frenulum?

Answer 7

Incomplete separation of penis and prepuce

Penis can extend but frenulum causes ventral deviation

Question 8

Treatment of persistent frenulum?

Answer 8

Surgical excision.

Towel clamp, local anesthetic , suture

Question 9

What can predispose to preputial trauma/laceration?

Answer 9

Excessive pendulous sheath
Excessive preputial length
Large preputial orifice

Question 10

DDX for swelling of the preputial sheath?

Answer 10

Trauma
Hematoma
Retropreputial abscess
Urethral rupture

Question 11

What are etiologies of preputial laceration?

Answer 11

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

Question 12

What speices of cow is more likely to retract the penis and prepuce into the sheath after laceration, leading to adhesions and abscess formation?

Answer 12

Bos Taurus

Question 13

What is the conservative therapy for preputial laceration?

Answer 13

Clean damaged tissues

Emollient ointment “Petercillin”
-2g tetracycline powder, 60ml scarlet oil, and 500g anhydrous lanolin

Bandages and slings

Question 14

What are the pre-surgical therapies for preputial lacerations?

Answer 14

Reduce edema

• hydrotherapy
• pressure bandage
• slinging prepuce with burlap material

Petercillin

Prophylactic antibiotics

Question 15

What are the possible surgical managements for preputial laceration?

Answer 15

Resection and anastomosis (circumcision)

Amputation of affected prepuce — plastic ring technique

Preputial reconstruction (scar revision)

Question 16

What are the keys to success in preputial resection and anastomosis?

Answer 16

Aseptic technique
Hemostasis
Avoid urine contamination

60-120days sexual rest post op

Question 17

What is the maximum amount of prepuce that can be removed?

Answer 17

Remaining prepuce should be minimum of 1 1/2 times the length of the free portion of penis

Question 18

What surgical technique would be indicated for a bull in limited facilities and of low economic value ?

Answer 18

Plastic ring 
—> polyvinyl tubing placed into preputial prolapse 
-> ligating sutures 
—> amputate prepuce 
—> remove ring in 2 weeks

Question 19

Where are penile hematoma most commonly located?

Answer 19

Dorsal aspect of distal sigmoid flexor, insertion of retractor penis mm.

Question 20

Clinical signs of penile hematoma

Answer 20

Swelling in sheath immediately cranial to base of scrotum

Usually symmetrical swelling

Will not want to breed

Question 21

Medical treatment for penile hematoma?

Answer 21

Absolute sexual rest for 60days

Systemic antibiotics

50% return to service

Hydrotherapy

Treat prepuce if necessary

Question 22

What is the surgical treatment of penile hematoma?

Answer 22

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

Question 23

What is a preputial avulsion ?

Answer 23

Prepuce torn form connection to free portion of penis

Seen in stud bulls with AV

Question 24

What causes an S-shaped deviation of the penis?

Answer 24

Apical ligament is too short

Question 25

What causes a ventral deviation of the penis?

Answer 25

Apical ligament is too long

Question 26

What can cause a vesiculitis?

Answer 26

B abortus
A pyogenes
H somnus

Rx: with tetracycline

Question 27

T/F: epididymitis is usually unilateral

Answer 27

True

Epididymis will be small, hard, and misshapen