Prof. (Dr.) R.S. ChoudharyPraveen Kumar Kaushik2017-01-272017-01-272016http://krishikosh.egranth.ac.in/handle/1/97607ABSTRACT An experiment was carried out for six weeks, from November 21st, 2013 to January 03rd, 2014 at Government poultry farm, Khatipura, Jaipur. A total of 135 day- old Giriraja chicks were divided into three treatment groups of 45 chicks which were further subdivided into three equal replicates of 15 chicks each. The synthetic and herbal vitamin C were supplemented through drinking water at the rate of 2ml./l. for starter , 3ml. / l. for finisher. Ayucee and 250 mg/ l synthetic vitamin C Various treatment groups and their designation used in this study are T1 control group, Vitamin C incorporated T2 and Ayucee incorporated T3 groups. The average body weight and weight gain revealed significant effect of both source of vitamin C throughout the experimental period. The feed consumption showed no significant effect of vitamin C sources in all the weeks and overall feed intake (I-VI).   The effect of both vitamin C sources on feed conversion efficiency was significant (P< 0.05) at starter (week I-III) and finisher stage (week IV-VI), and on cumulative feed conversion ratio week (I-VI weeks) over control. The mortality revealed no significant differences due to any treatment. Profit over control per chick revealed a loss of Rs. 13.28 and 16.42 in T2 and T3 groups, respectively. But Feed cost (Rs.) per unit live weight gain revealed that their was a percentage reduction of 10.34 and 06.59 in T2 and T3 groups, respectively, in comparison to control.enlivestock, biological phenomena, vitamins, body weight, acidity, costs, research methods, productivity, feed consumption, withania somniferaThesis