Estimates of genetic and environmental (co)variances for first lactation milk yield, survival, and calving intervalVariance and covariance components for milk yield, survival to second freshen-ing, and calving interval in first lactation were estimated by REML with the expectation and maximization algorithm for an animal model which included herd-year-season effects....
Researches regarding the influence of calving interval on the number of somatic cells during lactation in romanian black and white cowsThe aim of this paper was to study the influence of calving interval on the number of somatic cells from milk in Romanian Black and White cows....
Relationships among herd life, milk production, and calving intervalWhether to select for longer life in the herd or shorter calving interval depends on the genetic and phenotypic relationships among herd life, amount of milk in first lactation, and calving interval....
Research on the inflluence of the calving interval on milk yieldThe paper goal was to study the influence of the calving interval on milk yield for the Romanian Brown breed, using 950 lactations, of which: 573 lactations (60.31...
