DOI: 10.36871/vet.zoo.bio.202101003
UDC 619: 636.025
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
S. V. Agulina
Head of the Station for Young Naturalists
of the House of Children's Art,
Uglich, Russian Federation
Abstract
The article presents the results of studies of the microelement composition of feathers of wild
birds kept in the conditions of zoos in Moscow and Ivanovo. The aim of the study was to study
the content of some heavy metals and arsenic in representatives of the cockatoo subfamily – Cacatuinae
(White cockatoo – Cacatua alba, Sulper-crested ccockatoo – Cacatua galerita), and birds of
subfamily Psittacinae – Blue-fronted Amazon – Amazona aestiva, Burrowing parakeet – Cyanoliseus
patagonus assessing the health status of birds. In 2018–2020, parrot`s feathers were studied
for the accumulation of zinc, copper, iron, lead, cadmium and arsenic by the atomic absorption
method. The data on the features of the content of chemical elements in different species of parrots
are given. In the course of the study, it was found that according to the value of the average content
in the feathers of parrots, the studied elements form the following decreasing series: Fe> Zn> Cu>
Pb> Cd> As. In parrots kept in zoos, there is a tendency to a decrease in the proportion of zinc and
copper in 38,4%, an increase in iron and cadmium in 30,8% and 38,4% of individuals, respectively.
Deviations in the fluctuations of lead and arsenic in the studied sample of birds were equally in the
direction of increasing and decreasing their content in biosubstrates in 38,4% of individuals; 30,8%
of the studied birds in terms of the content of iron, zinc and cadmium in feathers, 46,1% in terms
of copper, 23,1% in lead, 7,7% in terms of lead are in a state of “pre-illness” and require additional
examinations. In the fan of the parrots, a significant increase in the concentration of lead in the
grooves, in comparison with the rod, by 3,98 times and a decrease by 2,83 times in the level of zinc
accumulation was established. Revealed a significant average direct relationship between the level
of Zn and Pb, Zn and Cd, Cu and Pb, Cu and Cd; Fe and As; Cd and As and inverse average relationship
between the level of Pb and Cd; Pb and As in bird feathers. To improve the trace element status
of parrot’s zoological institutions, it is necessary to conduct monitoring studies with a frequency of
1 time per six months with an assessment of the level of chemical elements on centile scales.
Keywords
biosubstrates, feathers, parrots, heavy metals, arsenic, macroelements, trace elements, centile scales.