VĮ Žemės ūkio duomenų centras
Monthly summarized data on the productivity of the first lactation cows during the 90 and 305 lactation days and the average productivity of all cows (not only the first lactation) (kg milk, fat percentage and kg, protein percentage and kg), number of cows are presented. and the age in months of the first lactation cows. Data are presented by municipalities, varieties and groups of varieties.