PHOTODYNAMIC MODEL OF METABOLIZABLE ENERGY GROWTH IN FOODS OF VEGETABLE ORIGIN

摘要

The effect of electromagnetic radiation in the infrared and ultraviolet spectrum range upon vegetable fodder was studied previously in connection with dextrin formation or transformation of provitamin D into a vitamin. The visible spectrum range was usually discarded due to possible vitamin decomposition. The present work shows that under the optical lamp irradiation of maize flour in the range of 330-700 nm a positive effect of this electromagntic field upon the flour nutritiousness compensates considerably for its negative effect upon vitamins. This positive effect manifests itself by the decreased protein excretion from the organism with excretory products. The experiment showed a considerable incretion, by approx= 30 percent of the fodder metabolizable energy during broiler feeding. The experiment was carried out on 1000 birds and showed the increase of the grow rate by 19 percent accompanied by the corresponding fodder saving. Mixed fodder containing up to 50 percent of maize flour was used. A number of methodical experiments was carried out which prove the photodynamic nature of the optical radiation effect upon fodder (the measurement of photoinduced signals of electronic paramagnetic resonance, their dependence upon the free oxygen concentration, loosening and breaking of bonds of carotene-protein complexes). The negative effect of optical radiation upon the vitamins contained in the maize flour was compensated for by a slight increase of additives at the expense of other mixed fodder components not subjected to the optical treatment.