Evaluation of Relative Bioavailability of Amino Acid Chelate Manganese with Slope Ratio Method for Broilers

YANG Bin, CAI Huiyi, LIU Guohua, CHANG Wenhuan, ZHENG Aijuan, ZHANG Shu, LOU Ruiying, CHEN Guilan

doi:10.3969/j.issn.1006-267x.2014.08.012

Chinese Journal of Animal Nutrition >

2014 , Vol. 26 >Issue 8: 2110 - 2117

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.08.012

Poultry Nutrition

Evaluation of Relative Bioavailability of Amino Acid Chelate Manganese with Slope Ratio Method for Broilers

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Ministry of Agriculture Feed Key Laboratory of Biotechnology, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China

Received date: 2014-03-06

Online published: 2014-08-13

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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 precondition 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 final 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). Compared 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 amino acid chelate A and manganese amino acid chelate B are 136% and 143% (based on Mn content in defatted dry weight of tibia) or 114% and 144% (based on Mn content in tibia ash), respectively.

Key words： manganese; bioavailability; broiler; growth; tibia

Cite this article

YANG Bin, CAI Huiyi, LIU Guohua, CHANG Wenhuan, ZHENG Aijuan, ZHANG Shu, LOU Ruiying, CHEN Guilan . Evaluation of Relative Bioavailability of Amino Acid Chelate Manganese with Slope Ratio Method for Broilers[J]. Chinese Journal of Animal Nutrition, 2014 , 26(8) : 2110 -2117 . DOI: 10.3969/j.issn.1006-267x.2014.08.012

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