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Asian-Australas J Anim Sci > Accepted Articles
DOI: https://doi.org/10.5713/ajas.20.0140    [Accepted] Published online May 12, 2020.
Effect of dietary supplementation of garlic powder and phenyl acetic acid on productive performance, blood haematology, immunity and antioxidant status of broiler chickens
I. E. Ismail1  , M. Alagawany1  , A. E. Taha2  , N. Puvača3  , V. Laudadio4  , V. Tufarelli4,* 
1Poultry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
2Department of Animal Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Alexandria University, Edfina 22758, Egypt
3Department of Engineering Management in Biotechnology, Faculty of Economics and Engineering Management in Novi Sad, University Business Academy in Novi Sad, Cvećarska, Novi Sad, Serbia
4Department of DETO, Section of Veterinary Science and Animal Production, University of Bari “Aldo Moro”, Valenzano 70010, Bari, Italy
Correspondence:  V. Tufarelli, Tel: +39-080-544-3918, Fax: +39-080-544-3811, Email: vincenzo.tufarelli@uniba.it
Received: 3 March 2020   • Revised: 29 March 2020   • Accepted: 14 April 2020
Abstract
Objective
The effect of garlic powder (GP) and phenyl acetic acid (PA) throughout the fattening period of broiler chickens on performance, blood parameters, immune and antioxidant parameters as well as carcass traits was evaluated.
Methods
A total of 210 day-old Cobb broiler chicks were randomly distributed into seven dietary treatments having five replications with six chicks per replicate. The first group (control) fed a basal diet without supplements, whereas the 2nd, 3rd and 4th group were fed basal diet plus 0.25, 0.50 and 0.75 g GP/ kg diet, respectively and the group 5th, 6th and 7th were fed on the basal diet plus 0.25, 0.50 and 0.75 g PA/kg diet.
Results
Broiler body weight and gain at 21 and 42 days were increased (P<0.05) with diets supplemented with GP and PA. Red blood cells (RBC) and hemoglobin (Hb) were improved in chickens fed diets enriched with GP. Broiler chickens received diets containing either GP or PA recorded the higher values (P<0.05) of total protein, globulin, high-density lipoprotein (HDL), IgM and IgG, superoxide dismutase (SOD) and total antioxidant capacity (TAC); while, blood total cholesterol, low-density lipoprotein (LDL), aspartate-aminotransferase (AST) and malondialdehyde (MDA) were lowered (P<0.05) compared to control-diet. Liver and immune-related organs weight were improved (P<0.05) in broilers fed diet supplemented with GP and PA.
Conclusion
Feeding of GP or PA in diet had positive effects on performance traits and immunological, antioxidant and physiological status of broilers. Thus, the use of tested feed additives as eco-friendly alternative to antibiotics resulted effective for animal health.
Keywords: Garlic; Phenyl Acetic Acid; Growth; Immunity; Antioxidant; Broiler


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