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In this articles are considered the influences of salts of lead on the organism of animals.In research, have been examined the effect of toxicants on animals by addition with a feed.At poisoning the increase of amount of lipase by 260%, level of enzymes of aminotransferaseby 2,5 times, that it is related with the violation of liver and pancreas activities.It specify to strengthening of cytologic processes, reduced of albumen synthesis and violation of a transport function of metabolism. At feeding the animals with forage additions and with sorbent have been observed a positive improvement of these indexesby 41-58%.

This article shows the trends and changes in migration processes in the East Kazakhstan region over the years of independence of Kazakhstan, the intensity, volume and geography of migration flows, and also uses statistical data. The socio-economic prerequisites for the migration flows of the population of the region, their impact on the population, the quality of labor resources and the current conditions in the field of migration, as well as issues in the field of migration policy aimed at stabilizing the demographic situation in the region are presented. Analysis of the modern geography of migration processes in the East Kazakhstan region shows that it corresponds to the historical reality of the 30th anniversary of the independence of the Republic of Kazakhstan, therefore, for the history of the Republic of Kazakhstan at that time, emigration had a negative character. impact on the demographic situation. It is characterized by negative indicators of the dynamics of changes in the balance of migration from 1992 to the present. Since 2016, the negative balance has grown again. This is 4.3 times more than in 2015. The article provides a scientific analysis of migration flows (their scale, intensity, direction, etc.), gender and age of migrants, social and ethnic composition and socio-economic consequences of migration in the region. As a result of the study, a map of ethnic migration of the East Kazakhstan region for 1999-2019 was compiled, reflecting the migration movements of repatriates. Analyzed the political, economic and social factors affecting the demographic situation. [ABSTRACT FROM AUTHOR]