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Effect of Ascorbic Acid, Acetylsalicylic Acid, Sodium Bicarbonate, and Potassium Chloride Supplementation in Water on the Performance of Broiler Chickens Exposed to Heat Stress¹

D. A. Roussan^*,2, G. Y. Khwaldeh^*, R. R. Haddad^*, I. A. Shaheen^*, G. Salameh^* and R. Al Rifai

^* Provimi-Jordan, PO Box 499, Amman 11118, Jordan; and Department of Disease Surveillance, Irbid Health Directorate, Jordanian Ministry of Health, PO Box 221, Irbid 22110, Jordan

Correspondence: ² Corresponding author: droussan{at}provimi.com.jo

This study investigated the effects of continuous supplementation of ascorbic acid (62.5 mg/L), acetylsalicylic acid (ASA; 62.5 mg/L), sodium bicarbonate (NaHCO₃; 75 mg/L), and potassium chloride (KCl; 125 mg/L) in water on heat-exposed broilers. A total of 225 female Ross broiler chickens, 35 d of age, were randomly assigned to 3 treatment groups, with 3 replicates of 25 birds each. The birds were exposed to cyclic temperatures (30 to 33°C for 12 h, and 21 to 23°C for 12 h) and supplemented with ascorbic acid, ASA, KCl, and NaHCO₃ [heat-stress supplemented (HS-SUP) group], or were exposed to cyclic temperatures (30 to 33°C for 12 h, and 21 to 23°C for 12 h) but not supplemented [heat-stress nonsupplemented (HS-NON) group]; the other birds were kept under thermoneutral conditions (21 to 23°C) and not supplemented (control group). The duration of the experiment was 7 d. Birds in the control group had better (P < 0.05) live BW and gain, total feed consumption, FCR, and mortality rate (%) than birds in the HS-SUP and HS-NON groups, whereas birds in the HS-SUP group had better (P < 0.05) live BW and gain, total feed consumption, FCR, and mortality rate (%) than birds in the HS-NON group. The results of this study suggest that ascorbic acid, ASA, KCl, and NaHCO₃ in combination offer a potential protective management practice for preventing heat stress-related depression in the performance of broiler chickens.

Key Words: acetylsalicylic acid • broiler • heat stress • potassium chloride • sodium bicarbonate • ascorbic acid

¹ Mention of trade names or commercial products in this publication is solely to provide specific information and does not imply a recommendation or endorsement by authors.