Safety of Daidzein in Laying Hens: Performance, Egg Quality and Reproductive Organs Development

CAI Juan; GU Huan; CHANG Lingling; ZOU Jianmin; SHI Shourong

doi:10.3969/j.issn.1006-267x.2013.03.023

Chinese Journal of Animal Nutrition >

2013 , Vol. 25 >Issue 3: 635 - 642

DOI: https://doi.org/10.3969/j.issn.1006-267x.2013.03.023

Short Communications

Safety of Daidzein in Laying Hens: Performance, Egg Quality and Reproductive Organs Development

CAI Juan ,
GU Huan ,
CHANG Lingling ,
ZOU Jianmin ,
SHI Shourong

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1. College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China;
2. Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou 225125, China

Received date: 2012-09-05

Online published: 2013-02-28

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Abstract

This trial was conducted to evaluate the safety of high dose daidzein as feed additive in laying hens by determining the performance, egg quality and reproductive organ development. Six hundred and forty 56-week-old Hyline brown hens were randomly assigned to 4 groups with 8 replicates per group and 20 birds in each replicate. Birds in the control group were fed a basal diet, and the others in the experimental groups were fed diets supplemented with 10, 50 and 100 mg/kg daidzein, respectively. Preliminary tiarl period was 3 weeks and experimental period was 8 weeks.The results showed that the mortality, egg production, egg mass and ratio of feed to egg were significantly affected by daidzein supplementation (P<0.05), and there were significant quadratic correlations between egg production/egg mass/ratio of feed to egg and daidzein supplementation (P=0.029, P=0.003, P=0.019). The daidzein supplementation in the diet of laying hens during the late laying period for optimal egg production, egg mass and ratio of feed to egg were 72.50, 46.50 and 59.52 mg/kg. Daidzein supplementation significantly affected three calcium-related egg quality indexes (eggshell thickness, eggshell percentage and eggshell strength) (P<0.05), also significantly affected the oviduct index (P<0.05). It is indicate that the daidzein has no adverse effect on feed intake, egg quality and reproductive organ development of hens during the late laying period. The recommended values of maximum daidzein limited level are 72.50, 46.50 and 59.52 mg/kg for optimal egg production, egg mass and feed conversion, respectively.

Key words： daidzein; laying hens; performance; egg quality; reproductive organs; safety

Cite this article

CAI Juan , GU Huan , CHANG Lingling , ZOU Jianmin , SHI Shourong . Safety of Daidzein in Laying Hens: Performance, Egg Quality and Reproductive Organs Development[J]. Chinese Journal of Animal Nutrition, 2013 , 25(3) : 635 -642 . DOI: 10.3969/j.issn.1006-267x.2013.03.023

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