Applicants have identified that three critical phenotypic/genetic measures are highly correlated with transition period health and may be used in selection and breeding protocols and/or in combination with traditional breeding and marker assisted selection methods to improve predictability of transition period health. According to the invention genetic evaluations for mastitis, ketosis, and metritis have been found to be highly predictive of overall transition health. The genetic evaluations are produced by directly measuring thousands of clinical cases of mastitis, ketosis, and metritis incidence within the first 60 days of the first lactation in ancestors of a particular animal and using this data in selection. Applicant’s selection criteria and quickly impact a breeders population by reducing transition cow disease incidence and increasing milk production in the initial population and in progeny.
