BIOCHEMICAL STRESS RESPONSES OF BROILER CHICKENS DURING TRANSPORT

摘要

Effect of catching-loading and transport was examined on selective blood biochemical variables (cortisol, glucose, lactate, triglyceride, cholesterol, uric acid, total protein, albumin, globulin, A: G ratio, total red cell count, hemoglobin, H:L ratio, calcium and phosphorus) of 270 Vencobb-400 broilers in Indian climatic condition. Birds were grouped into- Control, Tl (caught and loaded, but not transported) and T2 (caught, loaded and transported). Cortisol levels were found to be significantly (p<0.01) increased in T2 group. Blood glucose and triglyceride levels were found to be significantly lower (P<0.01) in T2 group. The concentration of total protein in plasma was significantly (p<0.05) higher in Tl group than in Control and T2. Total Red Blood Cell count was found to be significantly (p<0.01) higher in Tl group. Significant decrease of blood calcium was found in T2 group. Therefore it is suggestive that transport of broilers is positively correlated with release of Cortisol, and it significantly lowers glucose and triglyceride levels in blood. So, these biochemical markers may also be used as stress indicator in birds in transit. To reduce stress and ensure bird welfare, farmers should minimize bird density during transport. Further broilers may be fed with molasses /glucose + water before transport to prevent acute hypoglycemia and subsequent shock induced mortality.