THE GENETICS PARAMETERS AND THE RANK OF AMELIORATION TO A BLACK AND WHITE ROMANIAN COWS RACE POPULATION

he study was made on a BNR population bred in SCDCB Dancu conditions to estimate the genetic value of animals. Maximum lactation was in the third lactation with an average of milk production of 6670 kg with 4.13% fat and 3.34% protein. Were analysed main genetic parameters for some morphologic and productive features. Quantity of milk had a medium genetic determinism (h2=0.28), the milk qualitative traits were strongly genetic determined with values of 0.64(h2) for fat content and 0.57 (h2) for protein content. Milk quantity is positively correlated and with high intensity level with fat and protein quantity (0.99 - 0.95). Correlation of milk quantity with qualitative features of milk was negative. Analyzing the breeding value of bulls for main characters take in study we observe that 17 of them are breeders for milk quantity noting the 51131 bull breeder for quantitative milk features.