DOI: 10.36871/vet.zoo.bio.202104005
UDC 636.084
Authors
M. V. Stepanova
Candidate of Biological Sciences, Docent,
Yaroslavl State Agricultural Academy,
Yaroslavl, Russian Federation
V. A. Ostapenko
Doctor of Biological Sciences, Professor, Head of Department
of Zoology, Ecology and Conservation named after
Professor A. G. Bannikov, Moscow State Academy
of Veterinary Medicine and Biotechnology –
MVA by K. I. Skryabin,
Moscow, Russian Federation
Abstract
The aim of the study was to study the content of some heavy metals and arsenic in frozen fish (capelin, herring, pink salmon, chum salmon, pollock, blue whiting, greenling) used for feeding animals of zoological institutions. In the course of the study, it was found that according to the value of the average content in fish used by zoological institutions for feeding wild and exotic animals, the studied elements form the following decreasing series: Fe > Zn > Cu > As > Pb > Cd. In the course of nonparametric statistics, significant differences were established in the level of accumulation of all studied elements, except for Pb and Cd, by representatives of different fish families. Herring is characterized by a high level of accumulation of Zn and As, low – Cd, salmon: high concentration of Fe, Pb, Cd, low – Cu and As. Greenlings to a greater extent than other families contain Cu, to a lesser extent – Zn and Fe. The rest of the elements in the representatives were kept at an average level. In the studied fish samples, the excess of MPC was not found. The presence of a reliably weak direct correlation the relationship between the content of Pb, Cd and As in fish and animal biosubstrates was established, and the antagonism between the intake and accumulation of the following elements in the body of birds and mammals was statistically confirmed: Zn – Pb, Cu – Pb and Zn – Cd. The accumulation of As in biosubstrates is facilitated by the intake of Zn and Cd, and Cu – Zn.
Keywords
biosubstrates, sea fish, heavy metals, arsenic, diets.
