Breeding cows generally concentrate on three chief techniques which are progeny, by household, and from pedigree.
As its name implies progeny choice concentrates on the true progeny or descendants of particular creatures with known qualities. It may be helpful when choosing traits like milk yield or robustness to the particular disease.
Its drawback is that it is a slow process requiring careful breeding to get the specific offspring. You can browse https://www.lic.co.nz/products-and-services/automation/ to know more about cattle breeding.
Pedigree choice tends to concentrate on the authentic quality of critters ancestors instead of the particular creature. It can be a helpful method when wanting to pick those traits that are proven to possess high heritability.
There's also an option to be made between inbreeding and outbreeding. Inbreeding means crossing closely associated critters which will allow a particular attribute to be intensified or mended.
Outbreeding tends to improve the variability in a herd and may result in new attributes or combinations of attributes.
Both these processes can be carried out naturally or by artificial insemination. Artificial insemination is also recommended get the best output.
The selection of appropriate bulls in terms of your objectives should also be carefully considered. For example, if you have good pasture and require a bull to breed with adult mature cows then a bull with similar stature and a high weaning trait in offspring might be important.
Similarly, if you have more limited pasture capability and want the bull to breed with heifers then ease of calving might a required trait in the bull's progeny.