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The article contains regression mathematical models that describe the effect of mechanical and automatic microclimate control systems on the growth and development of Arbor Acres broiler chickens in Sayan broiler agro-industrial complex in conditions of on-ground keeping. The following microclimate parameters are considered: temperature, humidity, illumination. Cramer-Welch, Wilcoxon criteria are used to test the statistical hypothesis of homogeneity of the two considered samples. The Chow test is taken on the possibility of constructing two different mathematical models of the same type that describe the patterns of development of simulated indicators. Statistical estimates of the significance of the constructed models and factors included in the models are calculated. The Fisher criterion is checked to see the differences in the constructed models and choose a more acceptable one to describe the effect of the microclimate on the production of young birds. The results of regression analysis are interpreted in relation to the subject area under study. Graphical visualization of analysis of initial and output data of built models is performed. Factors are ranked by degree of their effect on the resulting index using elasticity coefficients and share of their influence. The main production indicators are calculated according to the results of population cultivation - average daily growth, absolute growth, relative growth rate, liveability. The article calculates the economic effect in one complete cycle of broiler chickens growing.

The paper presents the results of a study of radiation energy storage, radiation effects, and radiation induced changes of optical properties in crystals KH2PO4 (KDP), (NH4)H2PO4 (ADP), and crystals KDP doped with either deuterium (KDP : D) or Cr (KDP : Cr). Both the X-rays and H + (0.71 MeV ), He + (4.6 and 27 MeV ), N + (16 MeV ) ion beams were used for irradiation of the crystals studied. Optical absorption spectra of KDP were measured after irradiation with various H+ ion beam doses, and accumulation of the radiation-induced defects was estimated. Considerations of the radiation effects in these crystals under irradiation with the ion beams were made taking into account the results of Monte Carlo simulations using the TRIM computer codes. Using the experimental and theoretical results the paper discusses the similarities and differences of these crystals with respect to radiation hardness and the processes of radiation energy storage.