An Evaluation on the Effects of Dietary Kaolin and Zeolite on Broilers Blood Parameters, T4, TSH and Growth Hormones

Abstract

This study was conducted to evaluate the effects of dietary kaolin and zeolite on blood biochemical parameters, thyroxine (T4), thyrotrophin (TSH) and Growth Hormone (GH) in broiler chickens. A total of 320 one-day-old male Ross 308 broiler chicks were divided into 1 control and 4 experimental groups each containing 64 birds. Each group was contained four replicates with 16 chickens and rose for a period of 42 days. The experiment was carried out in a completely randomized design. Treatments were 1) control 2) diet included 15 g/kg kaolin 3) diet included 30 g/kg kaolin 4) diet included 15 g/kg zeolite 5) diet included 30 g/kg zeolite. Results showed that blood total protein for treatments containing 15, 30 g/kg kaolin and 30 g/kg zeolite and albumin, albumin/globulin in diets inclusion 15 g/kg kaolin and 30 g/kg zeolite significantly (p<0.05) increased compared to the control. Also glucose content in diet containing 15 g/kg kaolin and total bilirubin in treatment containing 30 g/kg zeolite and Growth Hormone (GH) in diets containing 30 g/kg kaolin and zeolite significantly increased compared to the control (p<0.05). Broilers were fed diet containing 15 g/kg kaolin and zeolite had shown a significant (p<0.05) decrease at triglyceride. There was no significant (p>0.05) differences were observed at levels of globulin, urea, creatinine, cholesterol, High Density Lipoprotein (HDL), Low Density Lipoprotein (LDL), Very Low Density Lipoprotein (VLDL), Alkaline Phosphatase (ALP), Creatine Kinase (CPK), Aspartate Aminotransferase (AST), Alanine Aminotransferase (ALT), Gammaglutamyl Transferase (GGT), Lactate Dehydrogenase (LDH), thyroxine (T4), thyrotrophin (TSH) between dietary treatments and control. The use of kaolin and zeolite as a beneficial feed additive in broiler chicken diet is recommended.