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《Acta Zoonutrimenta Sinica》 2001-01
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BIOAVAILABILITY OF COPPER FROM TRIBASIC COPPER CHLORIDE,COPPER AMINO ACID CHELATE OR COPPER PROTEINNATE FOR BROILERS

GUO Rong-fu,CHEN Ke-lin,ZHANG Xi(Yunnan Agricultural University,Yunnan Animal Nutrition and Feed Laboratory,Kunming 650201,China)  
468of day-one Ross male brailers fed a corn-soybeal meal based diet added copper sulfate(CuSO4) as a basal diet were used to investigate the bioavailabilities of Cu from tribasic copper chloride(TBCC),copper amino acid chelate(CuAA) or copper proteinate(CuPro)in a three weeks trail.The three levels of each CuSO4,TBCC,CuAA and,CuPro added to the basal diet were a 150 mg/kg,300mg/kg or 450mg/kg Cu,respectively.There were no effects(P0.05) for body weight and feed intake among treatments.Based on multiple regression analysis of liver Cu on added Cu levels or dietary Cu concentrations,using CuSO4 as standard of slope ratio,the estimated results showed that the bioavailabilities of Cu from CuSO4,TBCC,CuAA or CuPro were 112.4%, 127.7%(P0.01) of 99.35%(CuSO4 as 100%),respectively.The bioavailabilities of TBCC and CuPro were similar to CuSO4,but of CuAA much higher than CuSO4.The bioassay method could be used to estimate the bioavailabiltiy of organic copper sources for broilers.
【CateGory Index】: S831.5
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