Abstract:
The study was conducted to determine the effects of dietary supplementation of a commercial
probiotic (Protexin) on daily feed consumption, egg yield, egg weight, feed conversion, external and
internal qualities of egg and livability in layer hens. To achieve the objectives a total of96, 42 weekold
layers arranged in four dietary treatment groups including control, containing 8 birds! replication
supplemented with 0, 0.5, 1.0 and 1.5% probiotic for a period of 16 weeks. The study reveals that the
hen day egg production, feed conversion, egg weight and mass, egg shell weight, egg thickness and
egg breaking strength increased linearly with the use of dietary protexin. However, livability and
internal egg quality were not altered with the use of dietary protexin. Present study concluded that
dietary supplementation of probiotic promote the laying performance and most of the external quality
characteristics of eggs. In conclusion, it is recommended that dietary supplementation of probiotic at
the rate of 1.5 gm per kg feed in the layer ration may be economically potential.
