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Genetic and phenotypic correlations between the level of protein fractions in blood serum of 9-week cockerels and the productivity of their Greenleg partridge sisters



Genetic and phenotypic correlations between the level of protein fractions in blood serum of 9-week cockerels and the productivity of their Greenleg partridge sisters



Roczniki Nauk Rolniczych Seria B Zootechniczna 106(1-2): 127-142



Blood was taken from 833 nine weeks old cockerels which was subjected to electrophoresis and percentage share of protein fractions was determined in blood serum. In pullet-sisters utility traits are registered. Genetic and phenotypic coefficients of correlation were calculated between the productivity traits and the level of protein fractions, as well as heritability coefficients. A negative correlation was confirmed between the initial egg-production and the level of albumins. The weight of eggs in December and April and albumins show a very high and positive genetic correlation, which was also confirmed by the phenotypic correlation in the case of the weight of eggs in April. A negative genetic correlation was confirmed between the initial egg-production and that lasting 450 days and the level of alpha-globulins; simultaneously a positive phenotypic correlation was found. A very high, positive genetic correlation was found between the number of days to reach sexual maturity and the level of alpha-globulins. The body weight of 9 week pullets and cockerels and alpha-globulins show a negative genetic correlation. A positive, genetic correlation was found between the initial egg-production and that during the period of 450 days and the level of beta-globulins, at the same time a negative phenotypic correlation was found. A positive genetic correlation was found between the initial egg-production and the level of gamma-globulins. A negative genetic correlation was found between the weight of eggs in December and April and the level of gamma-globulins, the December weight was confirmed by the phenotypic correlation.

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