Efficiency of use of carbon ferrozine-containing sorbent in the diets of lactating cows and rabbits

Abstract

The article discusses the research results of the radiological efficiency of the carbon ferrocin-containing 137Cs sorbent produced at the Institute of Nature Management of the National Academy of Sciences of Belarus on cattle and small farm animals.The experiment was held at the Branch of the “Agro-Vetka” JSC “Vetka Agroservice” farm located in the Vetka district, Gomel region, Belarus, and involved two groups of lactating cows, 5 heads each. The experiment group, unlike the control one, was given a sorbent at a rate of 40 g per head per day mixed in the diet. Milk samples of the cows of the experiment and control groups were taken on the 0, 5, 8, 11, 14, 17 and 20th day of the experiment. Starting from the 5th day and up to the 20th day of sorbent feeding, a 1.7 to 4.5 time decrease in the 137Cs content in milk was observed.The sorbent cost in the experiment group per 1 thousand Bq of the obtained difference (against the control group) in the 137Cs content in milk was 0.65 rubles. The ferrocin use for the same purpose can be approximately 5.2 times more expensive.The adsorption efficiency of 137Cs by domestic sorbents based on carbon and ferrocin on small farm animals was studied. The experiment lasted 30 days and involved 4 groups of the 3-month Pannon White male rabbits, including 1 control and 3 experiment groups, three rabbits per each group. The experiment groups were formed using a pair matching method. Ferrocin and carbon-modified sorbents were mixed into the composition of rabbit compound feed.The 1st group received 0.2 g ferrocin per head at a rate of 100 mg per 1 kg of live weight. The 2nd and 3rd groups were given 2 and 4 g of carbon ferrocin-containing sorbent per head, respectively, at a rate of 1 and 2 g per 1 kg of live weight, respectively. The effect of the carbon and ferrocyanide (5 %)-modified sorbent at a dose of 2 and 4 grams per rabbit is by a factor of 1.4 and 2.6, respectively, more effective than the application of ferrocin alone. A dose of 4 grams of the carbon-modified sorbent is by a factor 1.8 more effective than that of 2 grams.The costs associated with 1 thousand Bq difference in accumulation of 137Cs in rabbit meat in the “carbon sorbent 2 g/head” and “carbon sorbent 4 g/head” groups is respectively 0.93 rubles, or 7.6 times, and 0.83 rubles, or 4.0 times, lower than those in the “ferrocyn” group.