Effects of Inorganic and Organic Complex Trace Elements at Different Levels on Trace Elements Concentrations in Yolk and Excreta of Laying Hens

XUE Ying; DONG Xiaofang; TONG Jianming

doi:10.3969/j.issn.1006-267x.2015.11.008

2015 , Vol. 27 >Issue 11: 3366 - 3380

DOI: https://doi.org/10.3969/j.issn.1006-267x.2015.11.008

POULTRY NUTRITION

Effects of Inorganic and Organic Complex Trace Elements at Different Levels on Trace Elements Concentrations in Yolk and Excreta of Laying Hens

XUE Ying ,
DONG Xiaofang ,
TONG Jianming

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Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China

Received date: 2015-06-09

Online published: 2015-11-21

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Abstract

This experiment was conducted to study the effects of inorganic and organic complex trace elements[manganese (Mn), iron (Fe), copper (Cu), zinc (Zn), selenium (Se)] at different levels on trace elements concentration in yolk and excreta of laying hens. Nine hundred and ninety 22-week-old Beijing Red No.1 laying hens were randomly allocated to 11 groups with 6 replicates per group and 15 hens per replicate. Group 1 was control group. Groups 2 to 6 (inorganic groups) and groups 7 to 11 (organic groups) were fed the basal diets supplemented inorganic and organic complex trace elements at 25%, 50%, 75%, 100%, and 125% of requirements NRC (1994) recommended, respectively. Mn, Fe, Zn, Se were referenced at laying hen requirements of NRC (1994) recommended, while Cu was referenced for broiler. The experiment lasted for 24 weeks. The results showed as follows:1) compared with control group, hens fed diets supplemented inorganic complex trace element at 125% of requirement NRC recommended increased Mn, Cu, Zn concentrations in yolk to varying degrees; inorganic complex trace element at 75%, 100%, 125% of requirement NRC recommended significantly increased Mn, Cu, Zn, Se concentrations in excreta (P<0.01). 2) Compared with control group, organic complex trace element at 50% of requirements NRC recommended significantly increased Cu, Zn, Se concentrations in yolk in week 12 (P<0.05), organic complex trace element at 75%, 100%, 125% of requirements NRC recommended increased Mn, Fe, Cu, Zn concentrations in excreta to varying degrees. 3)Fe, Cu concentrations in yolk of organic groups were increased than those of inorganic groups to some degrees. At 75%, 125% of requirement NRC recommended, Mn, Fe, Cu, Zn concentrations in excreta of inorganic groups were higher than those of organic groups to some degrees. It is concluded that the level of inorganic and organic complex trace element supplemented in diet of laying hens be both 25% and 50% of requirements NRC recommended can remain trace element concentrations in yolk while avoid the excess of trace elements in excreta. Organic trace element in diet of laying hens can increase Fe, Cu concentrations in yolk, and at 75%, 125% of requirement NRC recommended organic groups can decrease trace elements concentration in excreta.

Key words： trace elements; yolk; excreta

Cite this article

XUE Ying , DONG Xiaofang , TONG Jianming . Effects of Inorganic and Organic Complex Trace Elements at Different Levels on Trace Elements Concentrations in Yolk and Excreta of Laying Hens[J]. Chinese Journal of Animal Nutrition, 2015 , 27(11) : 3366 -3380 . DOI: 10.3969/j.issn.1006-267x.2015.11.008

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