Owl Farm case study - Herd genetics

This page from Owl Farm, the Waikato demonstration dairy farm run jointly by St Peter's School and Lincoln University, sets out how the herd is bred for Breeding Worth and Production Worth, and reports the herd's national ranking.

It covers DNA parentage verification, sire selection and A2/A2 genetics, how replacement calves are chosen from the top-ranked cows, and traits such as facial eczema resistance being bred into future generations.

^{Photo: “Dehorned dairy cow” by Dave Young, licensed under CC BY 2.0}