Influence of Genotype on Productivity and Egg Quality of Three Hen Strains Included in a Biodiversity Program

The aim of the study was to evaluate effect genotype on productivity and egg quality three hen strains included in genetic resource protection program Poland. encompassed populations laying hens, i.e., Rhode Island Red/RIR (R-11 K-22) White (A-33). analysis over five generations basic production traits, weight birds at 20 weeks (g), weights 33 53 weeks, sexual maturity, number eggs laid up 56 age, hatchability parameters. In addition, effective population size (Ne) flock homozygosity coefficient (Fx) were calculated for each breed. Population health during rearing periods also recorded. determined content shell traits relation age hens. kept litter a stocking rate 5 hens/m2 fed ad libitum with standard feed mixture Based results, it concluded that evaluated (R-11, K-22, A-33) are valuable strains, representing reservoir unique phenotypic traits. It shown random mating system used reproduction flocks effectively protects from an increase degree inbreeding. An influence hens’ origin (genotype) performance as well found. Over generations, characterized by high survival rates (above 98%). found large variation between R-11 K-22 A-33 strain terms especially body weights, maturity earliest start hens which showed significantly (p ≤ 0.05) higher performances compared results indicate varied. This particularly true such color; egg, shell, yolk weight; quality. many change obtained data indicates adopted methods conservative breeding these have influenced success conservation program.