By: Ky Chanarith

Abstract

The experiment was conducted in the animal experimental station of the Royal University of Agriculture, February 11 to March 25, 2003, to determine the effect of Vitamin C and NaHCO3 supplementation into drinking water on productivity of broiler.

Seven hundred fifty six of one-day-old chicken with 40.41g in initial weight was divided into 9 equal groups T0, T1, T2, T3, T4, T5, T6, T7, T8, and three replications. Group T0, the control group, received normal drinking water whereas T1, T2, T3, T4, T5, T6, T7, T8, received 30mg/head/day, 40mg/head/day, 0.75%NaHCO3/head/day, 1%NaHCO3/head/day, 30mg/head/day, 0.75%NaHCO3/head/day, 40mg/head/day and 0.75%NaHCO3/head/day, 30mg/head/day and 1%NaHCO3/head/day, 40mg/head/day and 1%NaHCO3/head/day respectfully. All groups of chicken were supplied a unique feed formulation and ad libitum those were divided to 2 phases as following of 1-3 weeks (23% CP, 3069.44 Kcal ME) and 4-6 weeks (20% CP, 3140.17 Kcal ME).

As the result, in body weight (g) of chicken was found in the end 6th weeks in which group 1307.64, 1398.07, 1439.67, 1345.68, 1345.86, 1383.72, 1342.29, 1353.62 and 1339.64 respect from T0 to T8 (p<0.01). Group T2 supply Vitamin 40mg/head/day had a highly body weight gain than T0 10.09%, T1 4.98%, T3 6.98%, T4 6.96%, T56 7.2%, T7 6.36% and T8 7.47%. Feeding conversion ratio were found the best groups T1 and T2 is 2.03 compare with control group 7.8%, and another group better than group control T3 4.29%, T4 6.31%, T56 3.79%, and T8 4.78%. The mortality was notice a high rate in T0 (3.92%) and was not found in T2. While the percentage dress carcass T2 highly than T0 3.58%, T1 1.81%, T3 3.83%, T4 4.34%, T5 3.50%, T67 3.63%, and T8 2.78%. Abdominal fat were showed group T1 2.49% and T2 2.43% highest and the lowest were T0 1.95% and T5 1.96%. Gross economic gain a highly in T2 and a low in T0. 4.04%, T 4.78%, T 1.52%, T

Supplementation of Vitamin 40mg/head/day in drinking water of broiler could increase the growth rate, decrease mortality rate, bring a better feed conversion ratio, increasing the carcass yield and better gross economic gain although the feed consumption is not different under the environmental condition of Cambodia.

Institution: Royal Academy of Cambodia

Supervisor: Dr. Kong Kroesna (Ph.D)

Degree: Master of Animal Science and Veterinary Medicine