Table of Contents
by Jennie Macky, Anna Whitfield – Vetfocus
- Are you really as good as you think you are?
- How do you assess your past performance?
- Have you heard of a Fertility Focus Report?
- Available from Minda, Mistro and InfoVet.
- Targets are average of top 25% of farmers reproductive performance.
- Have you seen a Return Interval Analysis report?
Common farmer issues with the report:
- Incorrect cow numbers (carryovers included but forgotten).
- Not submitting culls for AB or running non-cyclers with the bull, heats are not captured in the records, along with carryovers.
- Using CIDRs, ovsynch etc artificially lifts submission rates and heat detection measures.
- Understanding removal of cows has impact on final figure, report makes assumptions for their reproductive outcome.
- Partial report unless early pregnancy testing done to confirm all data.
- FFR can be trusted if farm data is accurate!
- Heat detection
- 3 week submission rate
- 3 week submission rate of first calvers
- % of herd in calf graph
- 6 week in calf rate and MT rate
- Nutrition – monitor BCS pre-calving and post-calving – act early to avoid a disaster
- Premating heats
- Targets are 75% cycled 10 days prior to PSM, 85%cycled at PSM.
- Useful for staff training, heat detection system review.
- Reference for heats during AB if recorded.
- Early detection of problems?
- Why Wait program – for cycling cows only
- Condenses first 3 weeks of mating into first 10 days.
- Need to be prepared for following calving season – staff, feed etc.
- Requires detection of premating heats, a good tail paint system and good organization and record keeping.
- CIDRs – most cost effective when done early i.e. 10 days prior to PSM
- Heifer Synchrony
- Heifers need to have reached target weight and puberty to give good results – MINDA Weights.
- CIDR vs double PG.
- AB Calves, faster genetic gain, more days in milk, more time to get ready for following mating.
- Need to be able to manage heifers at calving, lots of bull power for subsequent cycles (1 bull can only mate approx. 3 animals per day), heat detection methods.
Plenty of bulls and good management can make up for early breeding mistakes.
- Numbers – heaps!!! (not a liability).
- Minimum number required in herd at any one time thus need to double this.
- Get on farm early so can sort out social order.
- Keep in same subgroups for rotation.
- BVD test and vaccinate at least 8 weeks prior.
- Rotation – daily.
- Not allowed on yard.
- Remove immediately if lame – can affect sperm production for 6 weeks thus remove completely.