Climate change impacts on humans and animals. As a necessary step to mitigate the effect of climate on poultry production, crossbreeding between local and exotic genotypes have been advocated. Improvement of local chickens require that important gene markers be identified and evaluated. Naked-neck and frizzle genes have been identified and birds having these genes are known to maintain their production potential even at high ambient tropical temperature.This research work evaluated (i) the physical and biochemical characteristics of ejaculates of naked-neck, frizzle and normal genotype cocks...