动物营养学报Issue(8)：2110-2117,8.DOI:10.3969/j.issn.1006-267x.2014.08.012
斜率比法评定肉仔鸡对氨基酸螯合锰的相对生物学利用率
Evaluation of Relative Bioavailability of Amino Acid Chelate Manganese with Slope Ratio Method for Broilers
摘要
Abstract
Manganese( Mn)is an essential trace element that must be added in poultry diet,but there are big differences of bioavailability between different Mn sources. Accurate evaluation of bioavailability is the precon-dition of effective utilization of Mn source. A total of 1 440 Arbor Acres( AA)male broilers were randomly divided into 16 groups( each group set 6 replicates,and 15 broilers per replicate),fed a basal diet and other 15 experimental diets of the basal diet with different Mn adding levels( 5,10,15,20,and 40 mg/kg)and Mn sources(MnSO4,manganese amino acid chelate A and manganese amino acid chelate B),respectively. The experiment lasted for 21 days. The results showed that adding Mn in broiler diets significantly improved fi-nal body weight,average daily gain,average daily feed intake and feed to gain ratio of broilers and reduced mortality(P<0.05),and Mn adding level significantly influenced the growth performance(P<0.05),but there was no significant difference between different Mn sources( P>0.05). Adding Mn significantly increased the,Mn content in defatted dry weight and ash of tibia,and formed significant dose effect( P<0.05). Com-pared with MnSO4,the 2 kinds of organic Mn were significantly improved Mn content in defatted dry weight and ash of tibia( P<0.05). Using the slope ratio method to estimate the relative bioavailability of manganese a-mino acid chelate A and manganese amino acid chelate B are 136% and 143%( based on Mn content in defat-ted dry weight of tibia)or 114% and 144%( based on Mn content in tibia ash),respectively.关键词
锰/生物学利用率/肉仔鸡/生长/胫骨Key words
manganese/bioavailability/broiler/growth/tibia分类
农业科技引用本文复制引用
杨斌,蔡辉益,刘国华,常文环,郑爱娟,张姝,娄瑞颍,陈桂兰..斜率比法评定肉仔鸡对氨基酸螯合锰的相对生物学利用率[J].动物营养学报,2014,(8):2110-2117,8.基金项目
“十二五”国家科技支撑计划课题 （）
