Advances in Animal and Veterinary Sciences

Research Article
Adv. Anim. Vet. Sci. 9(12): 2168-2175
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Ayman Moawed Khalifah1*, Amina Shaban El-Saadany2, Mohamed Ibrahem Hassan1, Walaa Abdelraouf Kashyout1, Waleed Mostafa Dosoky3

1Livestock Research Department, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg El Arab, Egypt; 2Animal Production Research Institute, Agriculture Research Center, Egypt; 3Animal and Fish Production Department, Faculty of Agriculture (Saba Basha), Alexandria University- Egypt.

Abstract | Stevioside (STE) is the major ingredient of Stevia rebaudiana Bertoni leaves, plant from South America used to manufacture natural sweeteners. Stevia is used as a sweetener with no calories; evidence demonstrates that it has non-toxic effects on human verdure and is used in food production. The experiment was conducted to estimate the action of STE supplementation in finisher broiler diets. A total of 280 COBB 500 (19 d- old) male broilers were allotted to 4 experimental treatments (7 replicates per treatment). Treatments were: 1) control diet, 2) 1.5 g STE/kg feed (S1.5); 3) 3 g STE kg/feed (S3) and 4) 6 g STE/ kg feed (S6). Results showed that the growth performance (GP) traits were affected positively by STE supplementation (p< 0.01) compared to control. All carcass traits were not affected by STE supplementation except abdominal fat percentage, which decreased compared to control (P ≤ 0.05) as affected by STE supplementation. STE supplementation did not affect Meat quality, but it increases the shear-value (p< 0.01) of breast meat. A linear increase was shown in biochemical parameters: total protein, globulin, immunoglobulin A (IgA), and immunoglobulin G (IgG) concentration as affected by STE addition; inversely, a linear decrease has occurred in glucose concentration. Likewise, dietary STE supplementation improves the concentricity of lactobacillus and suppresses the concentricity of E-coli and salmonella. Results referred that the addition of STE with different levels in finisher broiler diets should enhance growth performance, breast meat quality, some blood biochemical parameters, and caecum microorganisms of broiler chicks. Hence, it may be used as a feed additive in finisher broiler diets.

Keywords | Stevioside, Broiler, Growth Performance, Meat Quality, Caecum Microflora