J. Phys. IV France 107 (2003) 1
Cu influence on hens weightI.A. Afonina1, E.S. Kleptsyna1, V.L. Petukhov2 and S.A. Patrashkov2
1 Tomsk Agricultural Institute
2 Research Institute of Veterinary Genetics and Animal Breeding of Novosibirsk State Agrarian University, 160 Dobrolubov Str., Novosibirsk 630039, Russia
Copper plays an important part in living being bodies. But, both high and low Cu levels may cause human and animal diseases. Some East Siberia areas are characterized by Cu pollution . 5 group of hens were formed: 1 - control, 2-5 - experimental. For a month the hens from experimental groups were drunk with water where Cu content was 5, 10, 20 and 30 times higher than the upper limits (UL). Group 1 - 3 hens' weight was almost the same during the experiment. Weight decrease (from 2020 to 1656 g) was detected in group 4 (20 UL) for the first half a month. All the hens of group 4 except for 3 hens were died for the last 2 weeks. In group 5 (30 UL) all the hens died after 2 ... 14 days. Thus, high Cu concentrations (20 ... 30 UL) cause hens' weight reduction of and their death.
© EDP Sciences 2003