EVALUATION OF A COMMERCIAL PROPIOBITIC (BACTOFORT®) AS A REPLACEMENT FOR ANTIBIOTICS ON PERFORMANCE OF BROILER CHICKENS

Authors

  • C. Z. Kahuwai Department of Animal Science, Ahmadu Bello University, Zaria. Nigeria,
  • T. S. Olugbemi Department of Animal Science, Ahmadu Bello University, Zaria. Nigeria,
  • E Opoola Department of Animal Science, Ahmadu Bello University, Zaria. Nigeria,

Keywords:

Antibiotic, Probiotics, Growth, Poultry

Abstract

A feeding trial was conducted to evaluate the growth performance nutrient digestibility and carcass characteristics of broiler chickens fed varying levels of a commercial probiotic (Bactofort®) as replacement for antibiotics. A total of 255-week-old Ross broiler chicks were divided into five groups or 47 chicks  per group and the groups assigned to five experimental diets containing 0, 25, 50 and 75g Bactofort® for T1-T4 respectively while T5 contained Oxytetracycline (AGP). Each treatment was replicated thrice in a completely randomized design (CRD) with 17 birds per replicate. Data obtained were subjected to analysis of variance using Statistical Analysis System and significant differences between treatments means were separated using Duncan Multiple Range Test. At the end of the starter phase, chicks fed the control diet had the best results in final weight (1161.20g/bird), weight gain (1034.70g/bird) and FCR (1.44) compared to chicks fed varying levels of Bactofort® in the starter phase. However, treatment group supplemented with 25g Bactofort® performed better in final weight (2524.94g/bird), weight gain (1334.52g/bird), TFI (3139.60g/bird) and FCR (2.36) compared to other treatments in the finisher phase. There were significant (P<0.0.5) differences in all apparent digestibility. Live weight, dressed weight, dressing percentage, prime cuts (drumstick, breast, back, wings), organs (kidneys, gizzard) and intestinal length were significant (P<0.05) across the treatment groups. Supplementation of Bactofort® at 25g/100kg of diet did not improve the growth of broiler chickens compared to the control at starter phase; it however significantly improved growth when compared to AGP at finisher phases.

Published

2020-06-30