Research in ISSN : P-2409-0603, E-2409-9325 Agriculture, Livestock and Fisheries An Open Access Peer-Reviewed International Journal Article Code: 0334/2021/RALF Article Type: Research Article Res. Agric. Livest. Fish. Vol. 8, No. 1, April 2021: 157-163. THE GROWTH PERFORMANCE AND LIPID PROFILE OF BROILERS FED DIET WITH OR WITHOUT ANTIBIOTIC AND GREEN TEA (CAMELLIA SINENSIS) EXTRACT Md. Golum Sorower, Sabbir Hossen Sabuz, Md. Nurul Amin* and Ummay Salma Department of Animal Science and Nutrition, Faculty of Veterinary and Animal Science, Hajee Mohammad Danesh Science and Technology University, Dinajpur-5200, Bangladesh. *Corresponding author: Md. Nurul Amin; E-mail: nurul.amin51@yahoo.com ARTICLE INFO A B S T R A C T Received 14 March, 2021 Revised 20 April, 2021 Accepted 28 April, 2021 Online May, 2021 --------------------- Key words: Green tea extract Antibiotics Broiler Performances Lipid profile This experiment was conducted to determine the optimum level of green tea extract (GTE) in diets without antibiotics and to evaluate its effect on broiler performances. A total of 100 Cob broiler chicks were kept for a period of 5 weeks. Dietary treatments used in this experiment were antibiotic free group (basal diet as a control), GTE 0.5% (basal + GTE 0.5%), GTE 1% (basal + GTE 1%) and GTE 2% (basal + GTE 2%) and antibiotic added group (basal + 0.05% oxytetracycline). GTE supplemented group showed significantly higher body weight and better feed conversion ratio (FCR) than other treatments (P < 0.05) where highest live weight (2034 g/bird) was recorded in broilers group provided with 0.5% GTE. The best FCR (1.58) was observed in the group supplemented with 0.5% GTE. The obtained results also revealed significant (P < 0.05) difference among treatments in the lipid profile parameters (total cholesterol, HDL and triglyceride except LDL). Broilers treated with 0.5% GTE showed lowest total cholesterol (115.0 mg/dl), triglyceride (116.3 mg/dl) and highest HDL (30.75 mg/dl). In conclusion, GTE can be added in the diet @ 0.5% for better growth performances of broiler as an alternative to antibiotic without any negative effect on lipid profile. To cite this article: Sorower M. G., S. H. Sabuz, M. N. Amin and U. Salma, 2021. The growth performance and lipid profile of broilers fed diet with or without antibiotic and green tea ( Camellia sinensis) extract. Res. Agric. Livest. Fish., 8 (1): 157-163. Copy right © 2021. The Authors. Published by: AgroAid Foundation This is an open access article licensed under the terms of the Creative Commons Attribution 4.0 International License www.agroaid-bd.org/ralf, E-mail: editor.ralf@gmail.com