10.22376/ijpbs.2019.10.1.p1-12 Volume 3 Issue 3 2012 (July - September) A study was performed with 216 day old vencobb broiler chicks in two batches during summer. In each batch, 108 chicks were divided into 9 dietary treatment groups viz, T lessThan sub greaterThan 1- lessThan /sub greaterThan fed on basal diet (BD) alone; T lessThan sub greaterThan 2 lessThan /sub greaterThan -BD + Vitamin E (200mg/Kg);T lessThan sub greaterThan 3 lessThan /sub greaterThan -BD + Vitamin E (200mg/Kg) + Selenium (0.15 ppm); T lessThan sub greaterThan 4-- lessThan /sub greaterThan BD+Tulsi(0.25%);T lessThan sub greaterThan 5 lessThan /sub greaterThan –BD+Tulsi(0.5%);T lessThan sub greaterThan 6 lessThan /sub greaterThan BD+Turmeric(0.2%);T lessThan sub greaterThan 7- lessThan /sub greaterThan D+Turmeric(0.4%);T lessThan sub greaterThan 8- lessThan /sub greaterThan BD+Tulsi(0.25%)+Turmeric(0.2%);T lessThan sub greaterThan 9- lessThan /sub greaterThan +Tulsi(0.5%)+Turmeric(0.4%). Additionally, a control group of 12 chicks were raised separately in stress free environment. Body weights and feed efficiency were recorded at weekly intervals and blood samples were collected from wing vein at 4 lessThan sup greaterThan th lessThan /sup greaterThan and 6 lessThan sup greaterThan th lessThan /sup greaterThan wk of age for estimation of Red blood cells (RBC), hemoglobin (Hb) and packed cell volume (PCV) and white blood cell (WBC) counts. Bodyweights, feed efficiency, RBC, Hb and PCV values were significantly (P≤0.01) lower, while WBC counts were higher in T lessThan sub greaterThan 1 lessThan /sub greaterThan group compared to control group. These attributes were improved with the supplementation of Turmeric followed by Tulsi at either doses and were comparable with the supplementation of vitamin E alone or in combination with Se. However, combination of herbals at different doses had no additive benefit than their sole inclusions. B. Swathi, P.S.P. Gupta And D. Nagalakshmi Broilers, summer stress, antioxidants, herbals and blood parameters 446-453