Week 6- Monitoring Reproductive Health in Cattle Flashcards
What are the two main hormones involved in spermatogenesis?
- LH
- FSH
What is the function of LH?
Produces testosterone
What is the function of FSH?
Sertoli cells (Produces sperm…)
What is the function of ABP?
Maintains high testosterone in the testes and epididymis
What temperature should the testes be for optimum sperm?
3/4 degrees cooler than the body for optimum sperm
Why should you perform breeding soundness exams in bulls and rams?
- Identifies subfertile males
- Promotes genetic progression
- Avoids economic loss
What is the fertility target for a bull?
A normal fertile bull is expected to impregnate 90% of 50 normal, cycling, disease free females within 9 weeks, and impregnate 60 percent of these in the first 3 weeks of breeding season.
When should you perform a breeding soundness exam on a bull?
At least 4 weeks before the breeding period
aim for a couple of months
Name two moderate prevalence penile pathologies
- Penile deviation
- Trauma of the free end
Name 4 low prevalence penile pathologies
- Penile fibropapillomata
- Failure of erection
- Penile haematoma
- Balanoposthitis
Name 3 rare penile pathologies
- Short retractor penis
- Analgesia of Penis
- Persistent Penile Frenulum
What might a sheath wash test for?
- Campylobacter fetus fetus and venerealis
- Older bulls with crypts in the prepuce mucosa
- Endometritis, Reduced Conception Rates
- Abortion in females
What is a vermiform appendage in rams?
- Check not adhered or traumatised
- It is needed for semen distribution into the vagina
What is urolithiasis?
- Happens when rams are fed concentrate or grai diets
- Formation of ‘stones’ in the bladder
- Struvite
- Necrosed vermiform appendage
- Grit around the prepuce
