GENETIC PARAMETERS OF THE MILK PRODUCTIVE TRAITS AND COAGULATION ABILITY OF MILK FROM BUFFALO BREED BULGARIAN MURRAH

V. Karabashev, T. Angelova, D. Yordanova, G. Kalaydzhiev, S. Laleva, N. Oblako, M. Cassandro, J. Krastanov

Abstract: The purpose of this study was to investigate the genetic parameters of the milk productive traits and coagulation ability of milk from buffalo breed Bulgarian Murrah. Established by us coefficients of heritability of the traits characterizing level of productivity and qualitative composition of milk – daily milk yield, fat and protein, are with low to moderate values (0.24, 0.25 and 0.14). Heritability of the sign rennet clotting time is with moderate value RCT – (0.33). We found low values of heritability in traits curd firmness A30 – (0.18) and time for tightening the coagulum K20 – (0.16).
Established by us phenotypic correlations between the traits, characterizing the level of milk productivity, the qualitative composition of milk and coagulation ability of milk ranged from slightly negative to slightly positive. Values that we found for genetic correlations ranged from moderate negative to high positive. The trait daily milk yield has a low positive correlation with the trait fat contain in milk (0.12 ) and negative correlation with other studied by us signs.

Keywords: buffalo; Bulgarian murrah; genetic; milk productive traits

Date published: 2017-03-17