Efficacy of antibiotic, probiotic, prebiotic and synbiotic on growth performance, organ weights and immune response in broiler chickens

6^th Global Veterinary Summit

November 14-16, 2016 Atlanta, USA

Golnaz Sharafi, Hasan Ghahri, Tohid Toloei and Behzad Soleimani

University of Tehran, Iran
Azad University, Iran

Scientific Tracks Abstracts: J Vet Sci Technol

Abstract :

Aim: A feeding trial was conducted to investigate the effects of dietary supplementations of antibiotic, probiotic, prebiotic and synbiotic on broiler performance, histomorphologic measurements of small intestine and immune response. Material & Method: A total number of 432, day-old broiler chicks (Ross 308) were obtained and randomly assigned to 1 of 9 dietary treatments for 6 weeks. The dietary treatments were: 1; basal diet; 2, 3; basal diet plus 400, 600 g of phosphomycin product/ton of starter and grower feeds, respectively, 4, 5; basal diet plus (150,200) g of probiotic product/ton of the starter feed and 100,150 g/ton of the grower feed, respectively, 6, 7; basal diet plus 500, 1000 g of a prebiotic product/ton of starter and grower feeds, respectively, 8 and 9; basal diet plus 1000,1250 g of synbiotic product/ton of the starter feed and 500,750 g/ton of the grower feed, respectively. Results: Birds supplemented with the synbiotic had a greater (P<0.01) feed intake and body weight gain compared with those of others treatments. Feed conversion rate was lower in birds supplemented with all additives than in control birds (P<0.01). The carcass weight was significantly increased in feed additives compared with that of control treatment group (P<0.05). The villus height was significantly increased in feed additives compared with that of control group (P<0.01). Synbiotic treated animals showed increase (p<0.05) in antibody titers against NDV compared to those of the control groups at 28, 35 and 42 days of age. Conclusion: The result of the present study revealed that these products had promising effects as alternatives for antibiotics in parallel to demand for elimination of growth-promoting antibiotics.

Biography :

Golnaz Sharafi has completed her DVM with excellent grade from Veterinary School in Tehran University. She is currently a R&D and Lab Officer in Viromed Laboratory. She has published more than 5 papers in reputed journals and also attended several international conferences.

Email: golnazsharafi@gmail.com