Vasectomy and castration

Question 1

List 2 bloodless castration methods

Answer 1

Burdizzo
rubber rings

Question 2

Describe how are rubber rings used for castration

Answer 2

rubber ring stretched over the whole scrotum and released - ensuring both testicles are below the ring

blood flow is cut and the testicles and scrotum atrophy and eventually slough

Question 3

Describe how burdizzos are used for castration

Answer 3

burdizzo crushes the spermatic cord - prevents blood flow into the testicular artery, testicle atrophies but the scrotum remains

Question 4

in calves/lambs, when does rubber ringing have to be done by

Answer 4

within 7 days of birth

Question 5

at what point is it required for vet to castrate a calf

Answer 5

more than 2 months of age

Question 6

at what point is it required for vet to castrate a lamb

Answer 6

more than 3 months of age

Question 7

how would we castrate a calf or bull surgically

Answer 7

via an open technique

Question 8

what anaesthetic do we give to bulls when castrating

Answer 8

subcut LA under the skin and 1-5ml in both spermatic cords

provide post op NSAIDs

Question 9

Describe calf castration- twisting method

Answer 9

standard skin prep
make incision through the scrotal skin and vaginal tunic
separate vaginal tunic from the testicle by tearing the ligament
pull testis down and twist the cord repeatedly occasionally stretching until it snaps - or you can use an emasculator to cut the testicle off

Question 10

if you have a cryptorchid animal, what castration method do you need to use

Answer 10

surgical

Question 11

what age can the burdizzo technique be used up to

Answer 11

2 months

Question 12

what is a vasectomy

Answer 12

bilateral surgical removal of a part of the vas deferens

Question 13

what is the effect of manipulating a ewes oestrus cycle by presenting her to a ram

Answer 13

2 week advancement by using a teaser ram