Object of research: process of adaptation and a level of natural resistency in an organism of animals under influence constant electromagnetic field and variable pulse electromagnetic field of low frequency. The purpose of research: to specify the physiognomy -biochemical mechanism of adaptation of an organism of pets under influence of a constant electromagnetic field and a variable pulse electromagnetic field of low frequency constant electromagnetic field and variable pulse electromagnetic field of low frequency, depending on intensity and duration of his(its) influence. To develop methods and optimum modes of an irradiation of animals with the purpose of increase of their resistency, increase in efficiency and quality of production and to give them an economic substantiation. Methods of researches: physiological, histologic, biochemical, zootechnician veterinary medicine - sanitary, statistical. Scientific novelty: for the first time adaptable properties of an organism of pets under influence constant electromagnetic field and variable pulse electromagnetic field of low frequency LF are investigated, depending on intensity and duration of influence. New experimental data on influence of the given physical factor on morphological and biochemical structure of blood, a muscular and bone fabric, gasholder an exchange, natural resistency and immunobiological reactancegrey absorption fabrics of internal bodies and endocrinologist are received. Physiognomy biochemical mechanisms of realization of adaptable reactions in an organism of animals are established. For the first time it is established, that the irradiation of animals constant electromagnetic field promotes increase of bactericidal activity of whey of blood. Preventol an irradiation auk variable pulse electromagnetic field of low frequency LF before introduction of vaccine La - Sоtа raises a credit of antibodies in blood auk after vaccination that has allowed for the first time for preventive maintenance of stresses at agricultural animals and birdsto apply general (common) irradiation electromagnet (an electromagnetic field). For the first time circuits of application constant electromagnetic field and variable pulse electromagnetic field of low are developed in view of intensity and duration of influence on an organism of animals with the purpose of correction of functional adaptation at influence technogenic stresses and the economic substantiation is given to them. On the basis of half-scientific experimental data it is sent the application and immunology reactance the patent for a way of increase is received from animals before introduction of a vaccine. Degree of introduction: methodical recommendations and technology of application in animal industries and veterinary medicine of variable pulse electromagnetic fields of low frequency are issued. With the purpose of increase at animals of resistency, efficiency and quality of production (are accepted and authorized to introduction in practice of veterinary medicine by Scientific - methodical advice(council) of the State committee of veterinary medicine of Ukraine, the report № 1 from December, 20, 2007). The way of increase immunology reactance at animals before introduction of a vaccine is patented. Materials of dissertational work are used in educational process on: biology -technological and faculty of veterinary medicine of Podolsk state agrarian - technical university, the Lvov national university of veterinary medicine and biotechnologies of name S.Z.Thisyear, Vinnitsa state agrarian university, the Nikolaev state agrarian university, Southern branch of National university of bioresources and environmental capacity Ukraine " Crimean agrotechnical university ", the Dnepropetrovsk state agrarian university, the Sumy national agrarian university, Zhitomir national agro-ecological university, Lugansk national agrarian university, Kharkov state zoobiotic academies. It is offered: with the purpose of improvement of technology of system of the maintenance(contents) animal on fattening and correctionsofthe general (common) physiological condition of an organism, natural resistency, efficiency and quality of production it is recommended to apply the general (common) soft-frozen an electromagnetic irradiation. For increase of natural resistency of an organism, improvement hematological and biochemical parameters of blood, increase of immunity at auk, it is recommended magnificent to irradiate before introduction of vaccine La - Sоtа their electromagnetic field with frequency meter 8 Hz. And an induction 25 мкТл. With an exposition 3 hours per current 9-ти day. It is introduced: in ПАФ "Dawn", agrophysics "Avis", faculty of educational training Podolsk state agrarian - technical university, Каmtntz- Podolsk area, Khmelnitskiy area. Sphere (branch) of use: veterinary medicine, animal physiology.