Effect of Liquid Probiotics Mixed Culture Supplements through Drinking Water on Laying Hens Performance and Yolk Cholesterol

The effects of Liquid Probiotic Mixed Culture (LPMC) on laying hens performance were studied. One hundred twenty eight 44-wk-old Isa Brown layers were randomly divided into 2 groups with 64 laying hens or layers in two groups. Layers in first group were fed with commercial feed as antibiotic contained diets; the other fed with self-mixed feed as antibiotic free diets. Both of groups had different LPMC level: control, 0.15 %, 0.30 % and 0.45 % of LPMC (v/v) added in water fount. The method used in this research was completely randomized design and followed by Duncan’s multiple tests. The results showed better improvements on antibiotic free diets in decreasing yolk cholesterol (P < 0.01). LPMC supplementation did not improve performances either on antibiotic free and commercial diets. Increased level of LPMC supplementation did not give significant effect on feed and water consumption, hen day production, egg weight, feed conversion, whereas overall variables had improvement tendency numerically and commercial feed groups had better performances than antibiotic free diets. LPMC supplementation did not improve layers performance but could be substitute antibiotics.