2023-03-082023-03-082006-11-27İpek, A. vd. (2007). "The effect of vitamin E and vitamin C on the performance of Japanese quails (Coturnix coturnix Japonica) reared under heat stress during growth and egg production period". Asian-Australasian Journal of Animal Sciences, 20(2), 252-256.1011-23671976-5517https://doi.org/10.5713/ajas.2007.252https://www.animbiosci.org/journal/view.php?doi=10.5713/ajas.2007.252http://hdl.handle.net/11452/31407This study was carried out to determine the effect of vitamin E and vitamin C on the performance of Japanese quails (Coturnix coturnix japonica) reared under heat stress during the growth and egg production period. A total of 8 10 seven-day-old Japanese quails were used in the trial. The birds received a diet with either three levels of vitamin E (DL-alpha Tocopheryl acetate) (60, 120 and 240 mg/kg of diet) and vitamin C (ROVIMIX STAY-C 35) (60, 120 and 240 mg/kg of diet). Live weight on day 35 and weight gain were the lowest in the group of chicks on a combination of 60 mg of vitamin E and 60 mg of vitamin C, whereas the highest live weight was demonstrated in chicks on a combination of 240 mg of vitamin E and 240 mg of vitamin C (p < 0.01). The effects of treatments on cumulative feed consumption, feed conversion ratio, age at 5% lay, sexual maturity weight, rate of lay and mean egg weight values were found to be significant (p < 0.01). The highest feed consumption, feed conversion ratio, age at 5% lay, sexual maturity weight, rate of lay and mean egg weight values were found in the group on a combination of 240 mg of vitamin E and 240 mg of vitamin C. The effect of treatments on the mortality ratio was found to be insignificant (p > 0.01). The cost of supplementing diets with vitamin E and vitamin C is very low. Therefore such a combination of supplement can offer a potential protective management practice in preventing heat stress related losses in performance of Japanese quails.eninfo:eu-repo/semantics/openAccessHeat stressAvesProduction traitsJapanese quailVitamin CVitamin ECoturnixCoturnix japonicaPhasianidaeCorrelated responsesDivergent selectionE supplementationQualityTemperatureNutrientsAgricultureArticle0002423516000152-s2.0-33847117676252256202Agriculture, dairy & animal scienceBroiler Chickens; Heterophils; Ross (Chicken Breed)