Managing and Monitoring Reproductive Health in cattle 2 (the herd) Flashcards
What si the cost of infertility?
What are some essential questions for ferility of dairy herds?
- Do cows get served?
- Are served times correctly?
- Do serves produce preganncies?
What is our minimum database for dairy herd?
- Calving dates +/- dystocia & assitance
- service dates +/- sire & operator
- Pregnancy diagnoses
also:
- Fertility tx
- uterine inflammatory dx & RFM
- Abortions
Describe the targets for inter-service intervals & submission rates?
What is the first service or day 24 day submission rate?
– Proportion of cows that are served within one oestrus cycle of becoming
eligible for service
– A measure of oestrus detection efficiency
– Target 80%
What is the return service submission rate?
– Proportion of PD negative cows that are served within one oestrus cycle of
the previous service
How to assess if serves are timed correctly ?
-> Inter-service intervals
-> 18-24, 36-48 day returns ratio
Describe inter-service intervals
- Temporal distribution of services
- A measure of oestrus detection accuracy
- Are services falling when expected assuming a cycle length of 18-24 days
Describe the 18-24, 36-48 day returns ratio
The ratio of the proportion of returning cows that were served at the first
return to those at the second
Differentials for Inter-service intervals?
How do we assess if serves produce preganncies?
-> Pregnancy rate (UK) or Conception rate
-> Fertility efficiency or Preg rate (US)
What is the pregnancy or conception rate?
- Proportion of services that result in a positive pregnancy diagnosis
- Care with synonyms (esp. US preg rate)
What is the ferility efficiency or Preg rate?
- Proportion of eligible cows that conceive every oestrus cycle
- (%cows eligible for service conceived – InterHerd)
Glossary & targets 1?
Glossary & targets 2?
What KPIs in Beef suckler fertility?
What should BCS be in suckler herds?
What three things to assess bull fertility?
- Breeding soundness exam -> General health & reprod tract
- semen (morphology & motility)
- Libido (ability to mount & intromission)