E.P. Miroshnikova, A. E. Arinzhanov, Y.V. Kilyakova
Orenburg State University
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Summary. The studies were conducted under experimental biological clinics ( vivarium ) Institute bioelementologii Orenburg State University to study productivity and especially the exchange of chemical elements in carp feeding using nanoparticles of iron and cobalt alloy (d = 100 ± 2 nm) at varying doses : 20 30 and 40 mg / kg of feed . Used alloy nanoparticles of iron and cobalt were obtained at the Institute of Energy Problems of Chemical Physics RAS (Moscow) and synthesized by high-temperature condensation installation Miguén technology M.J. Gene and A.V. Miller. During the experiment , a 200 carp , age ( 0 + ) , with the sample of 10-15 g , of which analogues formed by four groups (n = 50). Differences in feeding affect the growth rate of the experimental carp. The best indicators of the dynamics of growth were observed in the group treated with the nanoparticle dose of 30 mg / kg of feed , which is fixed to the end of the experiment the live weight increase by 10% as compared to control. When added to the feed ration of 20 mg / kg and 30 mg / kg of iron alloy nanoparticles of cobalt, increased content of individual elements in comparison with the control: 12,7 % potassium, 8,4 % magnesium, 9,6 % sodium, 2,5 % phosphorus, 11,0 % iron and potassium 19,5 %, 8,4% magnesium, sodium 2,4% , 3,0% phosphorus, 31,5% cobalt and iron 16,1%, respectively. Optimal dietary dosage carp is an alloy of iron nanoparticles and cobalt at 30 mg / kg – increased growth rate and bioavailability of essential elements phosphorus 0,7 %, 0,9 % magnesium, potassium 8,6 % sodium – 1,0 %, 1,3% iron and 7,5% cobalt.
Keywords: nanoparticles, iron, cobalt, feeding, trace elements, fatness, carp.