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
Recommended Citation
Llacuna, Annaliza R., "Effects of Bacillus subtilis -based probiotic supplementation via the feeds and growth performance of broiler chickens" (2015). Undergraduate Theses. 4170.
https://www.ukdr.uplb.edu.ph/etd-undergrad/4170
Document Type
Thesis