The influence of genotype on hen’s egg quality and incubation traits in semi-extensive system

Abstract

In this paper are presented the results of research about quality traits and incubation value, of Leghorn and Styrian hen’s eggs, in semi-extensive system of breeding.Aforementioned traits of eggs were examined on 110 eggs of leghorn hen breed, and 64 eggs of Styrian breed hen, while the results of incubation value researching were based on 93 (leghorn) and 52 (Styrian) hatched eggs.The aim of study was examination of the genotype influence on quality of eggs, as well as on their reproductive traits in semi­extensive system of breeding.Considering the average egg weight, length of egg, chicken’s weight and for the relative share of chicken in egg weight, the statistically significant differences were determined in case of Styrian hen breed(P lt 0.001; P lt 0.01; P lt 0.05), while in the case of Leghorn hen, the higher average values for absolute and relative loss of egg weight (P lt 0.001) were determined.There was not any significant influence of genotype (P>0.05) regard the width of eggs. During the calculation of corelation coeficient, for the both breeds in research, the significantly high corelation was determined between most of examined traits (P lt 0.001; P lt 0.01; P lt 0.05), except for the width of eggs and realtive share of chicken in egg weight (P>0.05).

U radu su izloženi rezultati ispitivanja osobina kvaliteta i inkubacionih vrednosti jaja leghorn rase kokoši i jarebičaste italijanke gajenih u poluekstenzivnom sistemu. Ispitivanja navedenih osobina jaja su izvršena na uzorku od 110 priplodnih jaja poreklom od leghorn rase i 64 priplodna jajeta poreklom od jarebičaste italijanke, a inkubacionih rezultata na 93 jajeta (leghorn), odnosno 52 jajeta (jarebičasta italijanka) iz kojih su se izlegli pilići. Cilj istraživanja je bio da se ispita uticaj genotipa na osobine kvaliteta jaja i njihove reproduktivne karakteristike u poluekstenzivnom sistemu gajenja. Statistički značajno (P lt 0,001; P lt 0,01; P lt 0,05) veće prosečne vrednosti mase jaja, dužine jaja, mase pilića i relativnog udela pileta u masi jajeta utvrđene su kod jarebičaste italijanke, dok su kod leghorn rase statistički značajno (P lt 0,001) veće prosečne vrednosti utvrđene za apsolutni gubitak mase jaja i relativni gubitak mase jaja. U pogledu širine jaja genotip nije imao statistički značajnog (P>0,05) uticaja. Izračunavanjem koeficijenata korelacije, kod oba ispitivana genotipa, utvrđena je statistički značajna (P lt 0,001; P lt 0,01; P lt 0,05) povezanost između većine praćenih osobina, osim između širine jaja i relativnog udela pileta u masi jajeta (P>0,05).