Performance of selected strains of Lactobacillus bulgaricus, Streptococcus lactis and Saccharomyces cerevisiae alone and in different combinations in broilers
Katoch, B.S.; Bhatt, R.S.; Dogra, K.K.; Gupta, R.; Sharma, K.S.; Sharma, C.R.
Indian Journal of Animal Sciences 68(2): 178-182
ISSN/ISBN: 0367-8318 Accession: 003879088
Dietary supplementation of the selected strains of Lactobacillus bulgaricus (L4), Streptococcus lactis (S1) and Saccharomyces cerevisae (Y3) alone and in different combinations on 'IBL-80' broilers revealed significantly higher growth rates (+14.05% and 10.15%) and feed efficiency ratio (+7.80 and 2.29%) coupled with zero mortality by the combination of the 3 microbes (L. bulgaricus + S. lactis + S. cerevisiae) and L4 of L. bulgaricus as compared to control during the starter phase. Contrary to this, none of the treatments showed significantly better performance than control during the finisher phase. The overall (1 to 6 weeks) growth performance and feed efficiency ratios were significantly. (P<0.05) better under the treatments involving the combination of the 3 microbes (+7.22 and +2.55%) as well as L. bulgaricus (+6.86 and 2.55%) than that of control, and their performance may be correlated to significantly (P<0.05) higher digestibilities of dry matter and crude fibre. The differences for the dressing percentage, gut pH and duodenal thickness under different treatments were statistically non-significant. On the basis of overall picture with respect to growth rate. feed efficiency ratio. mortality per cent, the combination of the 3 microbes (L. bulgaricus + S. lactis + S. cerevisiae) and L4 strain of L. bulgaricus was the most promising probiotics.