THE PHYSIOLOGICAL EFFECT OF POLYPHENOLS ON PRODUCTIVE PERFORMANCE OF BROILER CHICKS

Abstract

The present study was carried out at the Poultry Physiology Laboratory, Poultry Production Department, Faculty of Agriculture, Ain Shams University, Egypt. The main objective was to investigate the effect of dietary supplemental different polyphenols sources on productive performance, physiological and immunological responses of broiler chicks. The field work of the study was 35 days during the period from June to July 2020. A total of 160 unsexed one-day-old Indian River (IR) boiler chicks obtained from a commercial hatchery, were randomly assigned into four groups, 40 chicks in four replicates of ten chicks each. The first group was fed the basal diet without any supplement (control), the 2nd and 3rd groups were fed the basal diet (control) with 1 % and 2% grape seed (GS) powder, while the 4th group was fed the control diet with 0.1% green tea. Grape seeds (GS) were obtained, as by-product from Adfina company, then air dried in shade for one week and milled to obtain fine powder. While Green tea (GT) was purchased from local market. Chicks were housed in battery cages in semi-opened lab equipped with two exhaust fans to keep normal ventilation. A light schedule of 23 h light was applied until the 7th day of age followed by 22 h light: two hours dark daily, from the 8th day to end of the experimental period (35 days). Data were collected for Live body weight (LBW), body weight gain (BWG), feed consumption (FC) and feed conversion ratio (FCR) were recorded.