Objective—To evaluate signalment, surgical treatment,
postoperative complications, and future breeding
success or semen production in a group of bulls
with naturally occurring disease of the scrotum or
Study design—Retrospective study.
Animals—21 bulls that underwent unilateral castration
after evaluation for scrotal swelling.
Procedure—A computer-assisted search of medical
records at 2 veterinary teaching hospitals was performed.
Historical, diagnostic, surgical, and follow-up
data were collected and analyzed for those bulls with
scrotal swelling that underwent unilateral castration.
Results—Four of 5 pasture breeding bulls and 9 of 10
semen collection-center bulls successfully bred cows
or produced viable semen within 6 months of surgery.
Fourteen of 21 surgical procedures were performed
after induction of general anesthesia. Sixty-six percent
of procedures were performed as open castrations.
Seventy-one percent of bulls developed postoperative
complications, most of which were mild swellings.
Unilateral castration returned 13 of 15 bulls with unilateral
disease of the scrotum or testis to productive
service by 6 months after surgery.
Conclusion and Clinical Relevance—Unilateral castration
is an effective treatment for unilateral disease
of the scrotum or testis in bulls, allowing return to
reproductive function. (J Am Vet Med Assoc 2002;
Objective—To determine risk factors for development
of sequestra in cattle and identify factors associated
with a successful outcome.
Procedure—Medical records of cattle treated at veterinary
teaching hospitals in North America were
reviewed. To determine risk factors for osseous
sequestration, breed, age, and sex of cattle with
osseous sequestration were compared with breed,
age, and sex of all other cattle admitted during the
Results—110 cattle were included in the study. Three
had 2 sequestra; thus, 113 lesions were identified.
Most sequestra were associated with the bones of
the extremities, most commonly the third metacarpal
or third metatarsal bone. Ninety-two animals were
treated surgically (ie, sequestrectomy), 7 were treated
medically, 3 were initially treated medically and
were then treated surgically, and 8 were not treated.
Follow-up information was available for 65 animals
treated surgically and 6 animals treated medically.
Fifty-one (78%) animals treated surgically and 5 animals
treated medically had a successful outcome.
Cattle that were 6 months to 2 years old had a significantly
increased risk of developing a sequestrum,
compared with cattle < 6 months old. Cattle in which
sequestrectomy was performed with the aid of local
anesthesia were significantly more likely to undergo 2
or more surgical procedures than were cattle in which
sequestrectomy was performed with the aid of general
Conclusions and Clinical Relevance—Results suggest
that sequestrectomy will result in a successful
outcome for most cattle with osseous sequestration.
(J Am Vet Med Assoc 2000;217:376–383)