Author(s): Adel M A Eisa, Sahar S Abd ElHamied
Sixty, one day old, commercial Hubbard broiler chickens were equally divided into 3 groups. Chicks of group 1 kept as a control; meanwhile chickens of group 2 and 3 administered a bio-stimulant agent (Ultra Natural Plus) with a dose 1ml/5 liters and 2ml/5 liters drinking water respectively from 20 - 25 day of age and a second dose from 35-40 day of age. Blood samples were collected from each group at 33 and 45 day old. The bio-stimulant agent significantly increased body weight and improved feed conversion in both tested group at day 35 and 43, There WAS also an increase in total leukocytic and lymphocytic count associated with an increase in gamma globulin and total globulin with dose-related manner in both groups at day 35 and 45. No significant changes were recorded in serum gammaglutamyl transferase activity, calcium, phosphorus, creatinine or uric acid levels in all groups during the whole experimental period. These data indicated that, the studied bio-stimulant agent cause dose-related improvement in chicken performance and stimulate their immunity without altering the other tested biochemical parameters.