Effect of probiotic feed supplements in commercial broiler chicken

The study was conducted to assess the probiotic supplementation, fed to a total of 240 day old commercial broiler chicks from day 1 to 42 days of age and to evaluate the body weight gain, feed consumption, feed conversion ratio, carcass characteristics (ready to cook yield, weights of liver, heart, gizzard, abdominal fat, intestine, breast yield, spleen, thymus, and bursa), immune response (CMI to PHA-P, HI to ND vaccine), serum biochemical (total protein, cholesterol), livability and E.Coli counts. The trial results revealed that, the overall gain at 42 days with dietary supplementation of probiotic and antibiotic yielded significantly (P<0.05) highest body weight gain (1700g) followed by commercial probiotic (1691g) and probiotic (1685g) compared to control (1514 g) during the entire experimental period.