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Subject: Poultry Science × Author: SANGAMESH ANGADI × End date: 2024 × Start date: 2020 × Type: Thesis × Thesis Type: M.V.Sc. ×
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    ThesisItemOpen Access
    EFFECT OF SUPPLEMENTATION OF FIBROLYTIC ENZYMES ON GROWTH PERFORMANCE OF COMMERCIAL BROILERS
    (KARNATAKA VETERINARY, ANIMAL AND FISHERIES SCIENCES UNIVERSITY, NANDINAGAR, BIDAR – 585 226, 2022) SANGAMESH ANGADI; MALATHI, V.
    The effects of supplementation of fibrolytic enzymes on growth performance, carcass characteristics, biochemical parameters and immune status were studied in broilers from 1 to 42 days of age. A total of 156 day old straight run broiler chicks were randomly assigned to four dietary treatment groups viz., Control (Basal diet) (T1), Basal diet + combination of fibrolytic enzymes @ 250 g/ton of feed (T2), Basal diet + combination of fibrolytic enzymes @ 500 g/ton of feed (T3) and Basal diet + combination of fibrolytic enzymes @ 750 g/ton of feed (T4). The supplementation of different levels of fibrolytic enzymes in broiler diets revealed significant improvement (P≤0.05) in the body weight during the 6th week of experimental period. The average body weight (g) of broilers at the end of experimental period (6th week) were 2172.57±62.32, 2534.46±47.01, 2369.97±45.05 and 2431.76±49.25 in control, T2, T3 and T4 groups, respectively. There were no significant differences in feed consumption and feed conversion ratio among treatment groups. At end of the trial, the effects of supplementation of fibrolytic enzymes on carcass characteristics (mean dressing percentage, mean giblets weight and mean abdominal fat per cent), immune status (mean lymphoid organs weight and antibody titers against NDV and IBDV) and biochemical parameters (total protein, albumin, globulin, total cholesterol, HDL, LDL and liver enzymes) did not differ significantly (P˃0.05) among the treatment groups. The results indicated that fibrolytic enzymes had a better effect on body weight in broilers. Keywords: Broilers, Combination of fibrolytic enzymes, Carcass, Biochemical profile