RÉSUMÉ
Aim: The purpose of the present study was to evaluate the impact of Ajwain supplementation on the serum biochemical parameters of Pratapdhan chicken breed. Study Design: Descriptive Study. Place and Duration of Study: Department of Livestock Production and Management, Sri Karan Narendra Agriculture University, Jobner, between 12 December 2016 to 5 February 2017. Methodology: A totally randomized strategy was used to disperse 120 Pratapdhan chicks. The chicks were distributed into four treatment groups, each one contained 30 chicks. The treatment groups included the control (basal diet), T1 (basal diet + 0.1% Ajwain seed powder), T2 (basal diet + 0.2% Ajwain seed powder), and T3 (basal diet + 0.3% Ajwain seed powder). Daily records of the shed's temperature and humidity were used to calculate the Temperature Humidity Index (THI). During the experimental period, standard feeding practices and all other management techniques were used. One bird from each replicate was slaughtered on end day of the experiment period (2, 4, 6, and 8 week) to estimate serum biochemical parameters. The experiment lasted 8 weeks. Results: A significant difference (P<0.05) was observed in calcium, phosphorus, and magnesium values, among the biochemical indicators that varied between the treatment groups and the control group at whole tested period except the calcium concentration at 8 weeks of periods was not significantly (P>0.05) difference. Cholesterol value was observed (P<0.05) significantly decreasing with Ajwain supplementation groups when compared to control group. Conclusion: Dietary inclusion of Ajwain seed powder had not negative effect on the serum bio-chemical parameters of Pratapdhan broiler breed and lowering cholesterol concentration, which directly affects humans who consume poultry meat.