REALIZED GENETIC GAIN IN THE BUFFALO POPULATION FOR THE TRAIT MILK YIELD IN THE PEDIGREE SELECTION OF THE BUFFALO BULLS

Ts. Peeva, Y. Ilieva

Abstract: The object of the study were 62 bulls, sons of 38 bull dams and 45 sires with 3620 daughters for the period 1965-2005. By correction coefficients all buffalo lactations (of the dams and daughters) were adjusted to first normal lactation (210-305 days). The methods of Narain et al. (1979) were used for determination of the genetic progress realized in the population. The aim of the study was to determine the efficiency of the pedigree selection of the buffalo bulls based on the magnitude of the realized genetic progress in the buffalo population. The following conclusions were made in the study: The pedigree buffalo bulls' selection based on the productivity of their dams was low effective. Relatively high genetic progress (ΔGген. = 1.78% ) could be realized when the pedigree selection of the buffalo bulls is based on their sires.

Keywords: buffalo bulls; genetic gain; milk yield; pedigree selection

Date published: 2018-03-09