Reproduction: Bull Breeding Soundness Examination Flashcards
What is BBSE?
Bull breeding soundness examinations
To detect bulls whose fertility is sub-optimal and avoid using them
What stats should a normal bull achieve in 50 normal cycling females?
- 90% pregnant within 9 weeks
- 60% within first 3
What must the bull be capable of doing in order to achieve service?
- Find cows in heat
- Mount the cow
- Serve the cow
- Produce large amounts of viable sperm
What are the three parts to BBSE?
- General clinical examination
- Repro tract examination
- Semen evaluation
What is checked in general clinical exam of BBSE?
- Condition score- 3-3.5
- Locomotion and gait
- Conformation
- Ocular- needs to detect in heat
- Teeth- over/under shot heritable
What is assessed in repro tract exam?
- Scrotal circumfrence- 34cm at 2yo
- Testicles and related structures
- Accessory sex glands
- Prepuce and penis
What are the methods of semen collection?
- Artifical vagina
- Electro-ejaculation
- Trans-rectal ampullar massage
- Internal artificial vagina
How is semen evaluated?
- Gross motility
- Linear progressive motility
- Morphology
- WBCs
What is used for libido testing?
If a bull is put with a cow on heat then he should serve within 20 mins
Ideally 10
What are specific problems of reproductive tract?
Broadly
- Penile and preputial problems
- Problems with accessory sex glands
- Problems with testes
- Sexually transmitted disease
What are treatment options for penile haematoma? (broken penis)
Cull
Medical
* Most successful is < 15cm
* Sexual rest for 2m
* Cold hosing for 4d then warm hosing and massage for 3
* ABs to stop abscess
* NSAIDs
Surgical treatment
* Removal of blood clot and suturing of tunica albguinea
What causes penile fibropapilloma?
- Bovine papilloma virus
- Most common in young bulls
- May dissapeat over time
Surgery
* Remove under standing pudendal nerve block
What is this?
Persistent frenulum
What are the main venereal diseases?
- BHV 1
- Campylobacter fetus venerealis
- Tritrichomona foetus
What are the clinical signs fo campylobacter?
How is it controlled?
- Endometritis after service
- Failure to conceive
- Late embryonic death
- Abortion
Diagnosis- seath washing, females- vaginal mucus culture
Control- use AI for 2 years, seperate infected from non
