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<i> Lactobacillus</i>, 2 strains of <i>Lactococcus</i> and 1 strain of <i>Bifidobacterium</i>) and Prolam (<i>Bacillus subtilis</i>, <i>Lactobacillus acidophilus</i>, <i>Ruminococcus albus</i>) 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%.