Authors : H.L. Foo , T.C. Loh , P.W. Lai , Y. Z. Lim , C.N. Kufli and Gulam Rusul
Abstract: The effects of addition of different levels of Lactococcus lactis RW18 (RW18) metabolites in drinking water on growth performance, total cholesterol and faecal LAB, Enterobacteriaceae and pH in rats were investigated. The metabolites were prepared by inoculated and incubated the bacteria culture into MRS broth anaerobically. A total of 30 rats were used in this study. The rats were treated on control (without metabolite), 35% RW18 metabolites (v/v, 35% RW18) and 70% RW18 metabolites (v/v, 70% RW18) in drinking water. The initial and final body weights, growth rate, feed intake and feed conversion ratio were not significantly different among the treatment groups. The water consumption for RW18 rats was significantly lower than the control rats. Plasma total cholesterol levels were not significantly among the treatment groups. Faecal LAB count was only found to be significant at the end of experiment. RW18 rats had significant higher faecal LAB counts than the control rats. Reduction of faecal Enterobacteriaceae counts was found after one week of experiment. Faecal pH of rats treated with RW18 was not significantly reduced as compared with the control rats. The results suggest that addition of metabolites in drinking water may reduce and increase the faecal Enterobacteriaceae and LAB counts, respectively.
H.L. Foo , T.C. Loh , P.W. Lai , Y. Z. Lim , C.N. Kufli and Gulam Rusul , 2003. Effects of Adding Metabolites of lactococcus lactis rw18 Isolated from Fermented Tapioca in Drinking Water of Rats. Journal of Animal and Veterinary Advances, 2: 597-601.