Effects of dietary organic chromium supplementation on performance, blood and carcass paramaters of broiler chicks maintained under high temperature

ABSTRACTMSc THESISEFFECTS OF DIETARY ORGANIC CHROMIUM SUPPLEMENTATIONON PERFORMANCE, BLOOD AND CARCASS PARAMATERS OFBROILER CHICKS MAINTAINED UNDER HIGH TEMPERATUREMurat AKILLIDEPARTMENT OF ANIMAL SCIENCEINSTITUE OF NATUREL ANDAPPLIED SCIENCESUNIVERSITY OF ÇUKUROVASupervisor: Prof. Dr. Hasan R. KUTLUYear: 2006, Pages 43Jury: Prof. Dr. Hasan Rüştü KUTLUProf. Dr. Murat GörgülüAssoc.Prof. Dr. Ahmet ŞahinThe present study was conducted to determine whether dietary supplemental chromium fromyeast affect the performance, carcass and blood parameters of broiler chicks kept under hightemperature. A day old 80 broiler chicks were divided into 5 treatments groups with similar liveweight (44.86 g), containing 16 birds each. Each treatment group supplemented with 0, 50, 100, 200and 400 ppb organic chromium. During the experiment the chicks were reared at conventionalambient temperature (from 30 reducing to 21ºC by 3ºC/week) and 60-70% relative humidity, exceptduring periods of heating when the environmental temperature fluctuated 35-37ºC for 8 hours (09.00to 17.00) per day. Feed and water were always available. Light was provided 24 hours each daythroughout.Performance, carcass weight and yield, abdominal fat weight, liver, heart and gizzardweights, nutrition content in carcass were not affected by dietary supplemental chromium from yeast,but plasma cholesterol (P<0.05, linear), trigliserid (P<0.06, linear), VLDL (P<0.05, linear) andglucose (P<0.05, linear) contents were reduced significant by chromium.The results obtained present study suggest that dietary organic chromium supplementation inbroiler chicks maintained under high temperature had no positive effect on performance and carcasstraits but had some physiological effects as reduced some bloods parametersKeywords: broiler, high temeprature, organic chromium, performance, carcass