Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 6/20/2001
Publication Date: N/A
Technical Abstract: To map quantitative trait loci (QTL) affecting disease resistance to avian coccidiosis, three hundred F2 offspring from12 full-sib families were produced from a cross of two commercial broiler lines for phenotyping and genotyping. The F2 offspring were inoculated with 104 sporulated oocysts of E. maxima at 4 weeks old. Body weight gain, fecal oocyst shedding, plasma NO2- + NO3-, carotenoid, and interferon-g concentrations were measured at three different time periods post-infection. Seventy-two chicken microsatellite markers with an average marker interval of 50 cM were used for genotyping of the F1 and F2 chickens. Nested analysis of variance based on single marker was used in statistical analysis. The results displayed that there were several marker loci associated with disease associated- parameters.