Incubation value of eggs domestic strains grown in chicken rural areas our country

Abstract

The experiment was conducted to determine the value of incubation eggs laid by two native breeds or strains of chicken (white naked neck and black Svrljig chicken) that are grown in rural parts of our country and to the extensive system of keeping. The collected eggs from several rural households were incubated in the experimental laboratory of Faculty of Agriculture - Belgrade, Zemun. Of hatching of deposited eggs was higher in white strain naked neck chickens and was 80.00%, and the black hen Svrljig 78.02%. The average egg weight was also a statistically significant (P lt 0.001, P lt 0.01) higher in white naked neck chickens than strain Svrljig black hens (61.27 g - 57.67 g), and scores of day-old chicks (41.13 g - 39.47 g), while the relative share of the weight saw the egg weight was higher in black Svrljig strain of 1.27 g (67.16% - 68.43%), but the difference was not statistically confirmed (P> 0.05). In both strains of laying eggs between weight and weight of chickens were found statistically significant coefficients of phenotypic correlation (P lt 0.001). Between the weight of eggs and the relative share of chicken in the egg weight yielded a negative correlation (rp = -0.204ns) with white naked neck chickens and the black Svrljig positive (rp = 0.056ns).

Eksperiment je sproveden u cilju utvrđivanja inkubacionih vrednosti jaja poreklom od dve autohtone rase, odnosno soja kokoši (bela golovrata i crna svrljiška kokoš) koje se gaje u ruralnim delovima naše zemlje i to u ekstenzivnim uslovima držanja. Prikupljena jaja sa nekoliko seoskih domaćinstava su inkubirana u oglednoj laboratoriji Poljoprivrednog fakulteta - Beograd, Zemun. Izvodljivost pilića od broja uloženih jaja bila je veća kod belog soja golovrate kokoši i iznosila je 80,00%, a kod crne svrljiške kokoši 78,02%. Prosečna masa jaja je, takođe, bila statistički značajno (P lt 0,001; P lt 0,01) veća kod bele golovrate kokoši nego kod soja crne svrljiške kokoši (61,27 g - 57,67 g), kao i masa jednodnevnih pilića (41,13 g - 39,47 g), dok je relativni udeo mase pileta u masi jajeta bio veći kod crnog svrljiškog soja za 1,27 g (67,16% - 68,43%), ali razlika nije statistički potvrđena (P>0,05). Kod oba soja kokoši između mase jaja i mase pilića utvrđeni su statistički značajni koeficijenti fenotipske korelacije (P lt 0,001). Između mase jaja i relativnog udela mase pileta u jajetu utvrđen je negativan koeficijent korelacije (rp= -0,204ns) kod bele golovrate kokoši, a kod crne svrljiške pozitivan (rp= 0,056ns).