Effects of Bacillus subtilis -based probiotic supplementation via the feeds and growth performance of broiler chickens

Date

6-2015

Degree

Doctor of Veterinary Medicine

College

College of Veterinary Medicine (CVM)

Adviser/Committee Chair

Joseph P. Olarve

Abstract

A study was conducted to evaluate the effects of Bacillus subtilis- based probiotic (1.0 x 1010CFU/g) supplementation via the feeds on the growth performance of broiler chickens. 168 day-old chicks of mixed sexes of the Cobb-500 strain were used and assigned into three treatment groups following a Complete Randomized Design. The three treatments were: 1- Control - basal diet 2 ? Basal diet plus antibiotic Zinc bacitracin (400g/ton of feeds) 3 ? Basal diet plus Bacillus subtilisprobiotic (100g/ton of feeds). Each treatment consisted of four replicates with 14 chicks per replicate and was reared for 36 days.Throughout the experiment, it was observed that the body weight, body weight gain, average daily gain, feed consumption, and feed conversion ratio of broilers supplemented with probiotic and antibiotic were not significantly different (P>0.05). In conclusion, Bacillus subtilis-based probiotic and antibiotic supplementation via the feeds had the same effects on the growth performance of broilers. Therefore, Bacillus subtilis probiotic could be an alternative to antibiotic as growth promoter.

Language

English

Location

UPLB College of Veterinary Medicine (CVM)

Call Number

LG 993.5 2015 V4 L55

Document Type

Thesis

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