Herd fertility Flashcards

1
Q

Voluntary waiting period (VWP)

A

earliest service date after calving

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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%
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3
Q

calving to 1st service

A

VWP
postpartum problems
return of ovarian cyclicity
oestrus detection

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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

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5
Q

oestrus detection accuracy

A

milk sample at time of AI

test fro P4 level - should be low at AI

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6
Q

the routine visit

A

regular visit
exam of animals + records
advice

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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
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