[Safe technology of meat production in the areas of technogenic contamination]
2007
Nekrasov, a.V. | Nekrasov, V.D. | Vyajzenen, G.N. | Vyajzenen, A.G. | Vyajzenen, G.A.
The influence of different doses of natural zeolites, malt sprouts, brewers malt and bakery yeast on the accumulation of cesium-137 in different organs and tissues of steers in the area of technogenic contamination. With grass-concentrated feeding type of steers the initial level of radioactive contamination of rumen tissues and duodenum (16.55 and 21.0 Bq/kg) exceeded that of their contents (12.1 and 5.4 Bq/kg), except for rectum 0 4.5 and 15.2 Bq/kg. The addition to the daily diet of 80 g natural zeolites allowed to reduce the concentration of cesium in muscular tissue, lungs, heart, spleen completely removing radionuclides from kidneys and liver. The addition to the daily diet of 50 g malt sprouts resulted in increased contamination with cesium of rumen walls, muscular tissue, rectal tissues. Brewers malt at the dose of 50 g contaminated with cesium the rumen wall 6.7 times less compared to malt sprouts and 1.4 times – its content reducing the level of radionuclide in heart from 19.3 to 7.6 Bq/kg but increasing 2.7 times the duodenal contamination of tissues, 1.7 times – rectal tissues, and their contents – 4.9 and 1.9 times, respectively. The addition of bakery yeast to the daily diet at the dose of 1 g increased radioactive contamination of rumen wall 1.6 times, rectal tissues – 3 times. Bakery yeast, as a unicellular culture and a source of protein promoted intensive introduction of cesium from muscular tissues and duodenum. It is concluded that the addition to the daily diet of steers of natural zeolites at the dose of 80 g and bakery yeast – 1 g will allow to obtain ecologically safe meat products in the area of high technogenic contamination.
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