Herd fertility Flashcards
1
Q
Voluntary waiting period (VWP)
A
earliest service date after calving
2
Q
targets
A
calving index - 365 days earliest service date - 50 days calving - 1st service interval - 65 days calving - conception interval - 85 days conception rate - 1st service - 60% conception rate - all services - 55%
3
Q
calving to 1st service
A
VWP
postpartum problems
return of ovarian cyclicity
oestrus detection
4
Q
timing of 1st service
A
mean interval between calving + 1st service over a time period - cows not serviced missed, large psread not seen, unusual VWP
1st service submission rate - proportion of cows served within 3 weeks of earliest allowed service date
5
Q
oestrus detection accuracy
A
milk sample at time of AI
test fro P4 level - should be low at AI
6
Q
the routine visit
A
regular visit
exam of animals + records
advice
7
Q
exam of animals
A
problem animals - RFM, metritis, VLD post-calving or pre-breeding checks irregular inter-oestrus intervals oestrus not obseved pregnancy diagnosis pregnant + odd event
