author(s)
Dr. K Priya, Dr. A Rajadurai and Dr. S Meenakshi Sundaram

abstract
The study was aimed to investigate the effect of Seenthil chooranam (Tinospora cordifolia) in broiler chicken. Sixty number of day old broiler chicks were distributed randomly into three groups of 20 each. All chicks were vaccinated against Ranikhet disease (Lasota strain) at seventh day and 21^st day. Vaccine against infectious bursal disease was given on 14^th and 28^th day. From eighth day to 14^th day the T₂ of birds were given Seenthil choornam powder at the dose rate of 0.5g/ Kg of feed and T₃ group of birds were given a decoction of Seenthil choornam at the dose rate of 1mL/ Kg body weight. T₁ was kept as normal control with basal feed. Body weight was measured at weekly intervals and blood samples were collected on days 7, 14, 21, 28, and 36 of the study from all the experimental birds to measure Newcastle disease antibody titre using Haemagglutination Inhibition (HI). Data obtained from the experiment was subjected to statistical analysis. The present study revealed that Seenthil choornam did not have much influence on HI titre and body weight of birds. Administration of treatment for short duration might be the reason. Therefore, it is recommended to give treatment for long duration for better results. However, Seenthil choornam showed protective effect in birds against bacterial disease and reduced the mortality.