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Guidance for veterinary practitioners, government animal health staff and dairy herd advisers on the Dairy Score.
These are bonus points available to cattle when as calves they were reared in accordance with the requirements of the VictorianJDCAP (+3 credits) or the 3‐Step Plan (+1 credit). Calf credits are added onto the herd’s lowest base Score that the herd had in the animal’s first 12 months of life. This then becomes the Score for those individual cattle reared under these programs.
For example, calves reared under the 3‐Step Plan (+1 point) in a base Score 3 herd are eligible for Score 4 (3+1).
Non-Assessed herds have no testing history for BJD, however if the 3 Step Calf Plan was implemented and documented prior to July 1 2008 in herds within NSW, VIC, SA or TAS, then herd base Scores in these regions is Dairy Score 3. If calf hygiene controls were not introduced before July 1 2008, the herd base Score is 0.
Score 7 is the maximum individual animal Score for calves reared under either JDCAP (+3 points) or the 3‐Step Plan (+1 point) where calf credits are added to the base Score for the herd.
For example, calves reared under JDCAP in a herd that is in the Victorian Test and Control Program, which has attained RD2 (Score 6), can only claim a maximum of Score 7 not Score 9.
Yes. Hygienic rearing of calves adds to BJD assurance and is reflected in the Dairy Score. If measures have been in place for 4 years, the herd base Score for Non-Assessed herds with no history or occurrence of BJD is Dairy Score 4.
Yes. Calves reared under JDCAP can attain a maximum of Score 7 which is maintained for life eg. base Score 4 + 3 JDCAP credit points. The animals must have been reared under the JDCAP program for 12 months—although this may not necessarily have been continuous on the same property.
Any animal over 12 months of age.
No, however it is strongly recommended, especially if cattle are being introduced into the herd for any reason.
Note that to maintain Score 7, the herd must be re‐tested every 2 years by Check Testing 50 animals.
After 4 years of an approved calf rearing program the base herd score is increased by one point.
In herds where JDCAP has been implemented for 4 years or more, and this can be substantiated with documentation, the base Score of the herd is Score 4.
In herds where JDCAP has been in place for less than 4 years, the base Score of the herd is Score 3, until 4 years of JDCAP is achieved.
Calves less than 12 months old are not eligible to claim the relevant credit points towards their individual animal Score for lfe.
If calves are directly transferred from a herd that is implementing either JDCAP or the 3‐Step Plan, the eligibility for calf credits is maintained. This is because the environment is of similar risk.
The base Score used for adding calf credit points (+1 or +3) is determined by lowest base Score herd they were exposed to in their first 12 months of life. In this way the highest risk environment (ie. lowest base Score) is used to calculate the individual animal Scores.