On efficiency of maximum early application of probiotics in chickens of egg breeds
The object was to study the effect of early application of probiotics Bacell (2 strains of Lactobacillus, 2 strains of Lactococcus and 1 strain of Bifidobacterium) and Prolam (Bacillus subtilis, Lactobacillus acidophilus, Ruminococcus albus) on the growth of chickens and subsequent egg productivity of laying hens. The trial was performed on 600 chickens, which were fed basic diet (BD, I group, control), BD + Bacell (through all the trial) + Prolam for periods of 7 d with intervals of 7 d, up to 28 d of the age (II gr., eggs were aerosol treated in incubator and chickens were fed with Prolam before dispatch to poultry farm), BD + Bacell + Prolam with the same regime as II gr. up to 91 d of the age (III gr.), BD + Prolam for periods of 7 d with intervals of 7 d up to 28 d of the age (IV gr.), BD + Prolam for periods of 7 d with intervals of 7 d up to 91 d of the age OD + Bacell daily (VI gr.). The live weight of chickens at 91 d of the age in VI, IV and III grs was increased by 9, 10 and 12% respectively in comparison with control, with proportional increase in feed efficiency. The feeding Bacell during productive period increased egg production by 5-6%.