The genetic variation in the proteins of egg albumen, noticed by several authors for the first time at the beginning of the last decade (1, 2, 16, 17, 22) seems to be very usefull as a tool for ellucidating some aspects of the evolution, i.e. with respect to the process of differenciation of species and the origin of different breeds of domestic fowl, or as an aid in taxonomy (3, 4, 5). At the same time, the association of dams’egg-white genotypes with somme characteristics such as eggs fertility (25), embrionic mortality (14, 20, 21) precocity or even intensity of egg production (15, 25) was correlated with the population fitness (14, 20, 21) and seems to offer the opportunity for finding new and more effective solutions for the improvement of the flocks. Several researches attempt to characterise the populations by means of protein polymorphisms (5, 13, 15) or try to ellucidate the tendencies of the genetic structure in the populations, by comparing the observed values of the gentoype frequences with those estimated by the H ardy-Wein berg equilibrium (13).
Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 3, Madrid, Spain, 45–51, 1974
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