数字农科院2.0

Low-Dose Of Organic Trace Minerals Reduced Fecal Mineral Excretion Without Compromising Performance Of Laying Hens

文献类型： 外文期刊

作者： Qiu, JL; Lu, XT; Ma, LX; Hou, CC; He, JN; Liu, B; Yu, DY; Lin, G; Xu, JM

作者机构：

关键词： Fecal Mineral Excretion; Laying Hens; Organic Trace Minerals; Performance; Serum Indices; Tissue Mineral Retention

期刊名称： ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES

ISSN： 1011-2367

年卷期： 2020 年 33 卷 4 期

页码：

收录情况： JCR（2021版）

摘要： Objective: The objective of this study was to investigate the effects of low doses of organic trace minerals (iron, copper, manganese, and zinc) on productive performance, egg quality, yolk and tissue mineral retention, and fecal mineral excretion of laying hens during the late laying period. Methods: A total of 405 healthy hens (HY-Line White, 50-week-old) were randomly divided into 3 treatments, with 9 replicates per treatment and 15 birds per replicate. The dietary treatments included feeding a basal diet + inorganic trace minerals at commercial levels (CON), a basal diet + inorganic trace minerals at 1/3 commercial levels (ITM), and a basal diet + proteinated trace minerals at 1/3 commercial levels (TRT). The trial lasted for 56 days. Results: Compared to CON, ITM decreased (p<0.05) egg production, daily egg mass, albumen height, eggshell strength, yolk Fe concentration, serum alkaline phosphatase activity and total protein, and increased (p<0.05) egg loss and feed to egg ratio. Whereas with productive performance, egg quality, yolk mineral retention, and serum indices there were no differences (p>0.05) between CON and TRT. The concentrations of Fe and Mn in the tissue and tibia were changed notably in ITM relative to CON and TRT. Both ITM and TRT reduced (p< 0.05) fecal mineral excretion compared to CON. Conclusion: These results indicate that dietary supplementation of low-dose organic trace minerals reduced fecal mineral excretion without negatively impacting hen performance and egg quality.

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