Restriction of cadmium transfer to eggs from laying hens exposed to cadmium

Journal of Toxicology and Environmental Health
S SatoY Kojima

Abstract

The transfer of Cd to eggs of white Leghorn laying hens has been shown to be restricted. After Cd was injected ip into laying hens, the Cd concentrations in the blood, livers, ovaries, and eggs were measured. Although the Cd concentrations in the maternal blood and livers increased remarkably at certain levels of administrations, the Cd concentration in the yolks of eggs was not significantly increased, and was less than 0.04 microgram/g wet weight. After egg production stopped in the highest injected group (7.5 mg Cd/kg), Cd in the yolks of eggs had an accumulated range of 0.02-0.03 microgram/g wet weight. This was despite the high Cd accumulation in the liver. Furthermore, the Cd concentration in the follicle walls of the ovary increased and was 13- to 52-fold higher than in the follicle yolks. An additional experiment was conducted in order to estimate whether hatching success is affected by the Cd in the laid eggs of Cd-injected laying hens. The ratio of hatching success in the 0.3 or 1.2 micrograms Cd/egg-injected groups was similar to that in the saline-injected group, indicating that a small amount of Cd in the eggs might exert no marked influence on the hatching success. In conclusion, Cd transfer from laying hen to egg...Continue Reading

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Citations

Jul 12, 2005·Archives of Environmental Contamination and Toxicology·T DauweM Eens
Dec 28, 2011·Biological Trace Element Research·E MarettováE Košutzká
Dec 9, 2003·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Susan C TiltonWilliam H Benson
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Jan 9, 2010·Environmental Science and Pollution Research International·Heinz RüdelChrista Schröter-Kermani
Sep 28, 2015·Marine Pollution Bulletin·Isabeau PratteMark L Mallory
Jun 6, 2015·Environmental Science and Pollution Research International·Adrienn GrúzJózsef Lehel
Aug 3, 2013·Ecotoxicology and Environmental Safety·Jin-Long LiShi-Wen Xu
Oct 5, 2010·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Palma SimonielloSilvana Filosa
Feb 29, 2020·Animals : an Open Access Journal From MDPI·Diaa E Abou-KassemAhmed A Allam
Jun 13, 2020·Environmental Science and Pollution Research International·Can TaoNiya Zhang

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