Published in Scientific Papers. Series D. Animal Science, Vol. LIX
Written by Dana BARBA, Gabriela MARGARIT, Radu Cristian TOMA
This paper presents RSC characteristics regarding heritability parameter for the development, reproduction and milk production at the Pantelimon and Afumati farms. The milk production is the main target when we follow the goal of milk production exploitation from those two farms. To determine the heritability of morphologic characteristics and capability for the mechanic milking, it is obvious the milk cows from the group of study have a level of genetic determination for waist between 43% at Pantelimon farm and 35% at Afumati. So, they are fitting under variability limits of heritability coefficient. A higher heritability value to the entire population in this study is the height at the croup character. At the Afumati farm it was h2= 0.49 and at Pantelimon farm h2 = 0.47. The milking speed represents the most important parameter to reflect the capability of the udder for the mechanic milking, the heritability coefficient being between 28% and 48%, results obtained also by the other authors. The heritability coefficient determined for the Calving interval (CI) indicate a weak genetic determination, so, at the Pantelimon farm h2 = 0.195 and Afumati farm h2 = 0.110. The heritability of the between birth and the service period (SP) has lower values, between h2 = 0.140 at Pantelimon farm and h2 = 0.100 at Afumati farm. The heritability coefficient of milk production 0.31 - 0.35 and the fat percent was 0.48-0.51. So, at the both farms, we obtained data can be compared with similar data from the profile literature.
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