Cow data contributes significantly to the rate of genetic gain across the national herd. The information feeds into the Dairy Industry Good Animal Database (DIGAD) improving the accuracy of Breeding Worth (BW) and Production Worth (PW) indices.
Create a strong foundation with parent records
Recording births and matching cows to calves
- Record the date, cow (dam) tag number, calf sex, calf ID and whether or not the cow required calving assistance.
- Take care matching cows to calves. If in doubt, checking the breeding information can help; is the cow due? When was the mating date? Does the breed match the bull/sire?
- Have a system in place to temporarly ID calves in the paddock, so that you can put proper tags in at the calf shed where it is clean and dry.
Verifying parents through DNA
DNA sire verification is a useful tool that can confirm the fathers of your heifer replacement calves.
- Use DNA sire verification across your entire mob of replacement heifers, or on a strategic basis where parentage is uncertain.
- A simple ear punch provides enough DNA to complete the test.
- The mothers of your heifers can also be confirmed using DNA verification, but this involves an initial investment to obtain a DNA profile for each cow in the herd.
- DNA sire verification costs around $30 per animal.
