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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2008 > Volume 7 Number 7 > I.T. Kadim1, B.H.A. Al-Qamshui, O. Mahgoub, W. Al-Marzooqi and E.H. Johnson

Effect of Seasonal Temperatures and Ascorbic Acid Supplementation on Performance of Broiler Chickens Maintained in Closed and Open-Sided Houses

I.T. Kadim1, B.H.A. Al-Qamshui, O. Mahgoub, W. Al-Marzooqi and E.H. Johnson
Department of Animal and Veterinary Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Muscat, Sultanate of Oman
Abstract :

The efficacy of ascorbic acid in drinking water on performance of broiler chickens under closed and
open-sided houses during hot (ambient temperature 36oC) and cool (ambient temperature 23oC) seasons were studied. The temperatures inside the poultry houses were 26oC (closed), 29oC (open-sided), 32oC (closed) and 37oC (open-sided) for cool and hot seasons, respectively. One-day-old chicks (432 birds) were housed in each closed and open-sided environment for each season. Birds were maintained under 23 hrs light and 1 hr dark cycle and offered ad libitum access water and feed. Broilers in both houses were randomly subjected to four drinking water treatments (9 birds in each 6 replicates/treatment): 0, 100, 200 and 300 ppm ascorbic acid. Feed intake, body weight gain, feed conversion ratio and rectal temperatures were recorded weekly. Ascorbic acid supplementation at 200-300 ppm was associated with a reduction in rectal temperatures during the hot season. Open-sided house depressed body weight gain and feed conversion ratio (P < 0.05) during hot season. Compared to the control group, ascorbic acid improved feed intake, body weight gain and feed conversion ratio by 6%, 9% and 3% (cool season) and 8%, 11% and 5% (hot season). Birds  supplemented with 200 ppm ascorbic acid had (P < 0.05) higher feed intake, body weight gain and
feed conversion ratio than the control group during the cool season, while 300 ppm (P < 0.05) improved
broiler performance including feed intake, body weight gain and feed conversion ratio during the hot season. Bird’s rectal temperature was higher (P < 0.05) during hot season in open-sided house and (P < 0.05) reduced by supplementing 200-300 ppm ascorbic acid. This study demonstrated that seasonal
temperatures had a significant effect on broiler performance in open-sided house. Supplementation of
drinking water with 200-300 ppm ascorbic acid ameliorated broiler performance in open-sided housing at high ambient temperatures.

Keywords :
Seasonal temperature, ascorbic acid, chicken performance, open-sided house

Date Deposited : 12 Jul 2011 13:01

Last Modified : 12 Jul 2011 13:01

Official URL: http://www.pjbs.org/ijps/ijps.htm

Volume 7, Number 7, - 2008 , ISSN 1682-8356

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