Influence of light on the hematology, lymphoid organs and production of the broilers.

Effect of light stress at various time intervals on broiler chicks was studiedduring January- February, 2010 by rearing a total of 400, one-day-old Hubbard X Hubbard experimental chicks atDepartment of Microbiology, University of Veterinary and Animal sciences, Lahore, Pakistan. It was observed that light stressed birds had showed non-significant (P>0.05) difference on blood cells population except lymphocytes percentage was found higher in groups D (61.4+1.16) than group C. The effect on lymphoid organs studied and the mean thymus weight (gm) of chicks in group B (1.90+0.53) was adversely effected as the chicks in this group had significantly (P 0.05) difference among groups with treatment of Vitamin C, Vitamin E and glucose.