USE OF ZEOLITES FOR INCREASE FEEDING QUALITIES OF ANIMALS
For receiving good results at cultivation of bull-calves it's necessary to provide them with the full-fledged, balanced on all nutrients diet. Natural feed additives contain necessary mineral substances. Besides, they possess the adsorbing properties that allows to reduce impact on an organism of harmful substances. The purpose of the real work - studying of possibility of use of zeolites of various fields for bull-calves of breed the Hereford on sagination. It was established that at the end of researches bull-calves from the 2 <sup>d</sup> group who received in the form of feed additive glaukonit had the highest alive weight. They had alive weight on 23.6 kg, or for 5.7 % it is, more, than bull-calves of control group. On the second place on this index there were bull-calves of the 3 <sup>rd</sup> group (“Vitartil”), and least of all bull-calves of the 1 <sup>st</sup> experienced group (zeolite) though they also surpassed bull-calves of control group on 16.6 kg, or 4.0 % reacted to natural feed additive. The highest average daily increases of alive weight in all groups were during the period from 9 to 12 months - from 857 ± 13.4 g (control) to 990 ± 21,8 g (the 2 <sup>d</sup> experienced). At the bull-calves receiving zeolite-containing additives, it was 95-125 g higher, or for 11.3-14.9 %. In general for the entire period of researches average daily increases of alive weight in the 2 <sup>d</sup> experienced group which bull-calves received additional glauconite. They made respectively 962 ± 15.2 g that on 23-30 g, or for 2.4-3.1 % it is, more, than in other experienced groups. Thus, introduction to a diet of animal natural feed additives allows to increase the alive mass of an animal on sagination to 430 kg and above at 15-month age.