Revunets' A. Effects of adsorbents on the course of gestation, calving and a postnatal period in cows in the radionuclide contaminated zone

The thesis presents data on the effects of certain adsorbents (vir. Impregnated clay - 200 gm, ferrocene - 3 gm, saponite - 60 gm and their mixtures; impregnated clay - 100 gm ferrocene - 1 gm, saponite - 60 gm) on the blood composition, manifistation of calvinag signs, course of calving stages , postnatal period a 137Cs - contamination level of fetal fluid, the fetal of placenta a colostrum as well as on radionuclide removal with faeces and urene in dry cwos long kept in the zone of radioactive contamination (5-15 Ci per sq km). Foeding the above mixture to cows promotes an increase in the number of erythrocytes 15,3 per cent (P<0,05),leukocytes - 14,6 per cent (P<0,001), gemoglobin coucentration - 25,6 per cent (P<0,01). This mixture makes for an intensive calving: the first calving stage is 91,5 minutes shorter (P<0,02) as compared with the contral group the second - 33,2 minutes (P<0,01) a the thired - 154,6 minutes (P<0,01). Dietary supplementation of separate minerals decreases the contamination of fetal fluid beg 23 times (P<0,001). Feeding cows with the mixture of the three minerals decreases radionuclide coucentration by 145-290 timus (P<0,001). It is for the first time that in the 3-a zone of radioactive coutamination preparations for curing ovary a uterus hypofunction and sexnal cycle correction have been suggested . Terms a doses of digital a trivitamin administration have been also suggested for cureng cows in postnatal period. The above preparations have shown positive effects on the coming into heat of cows kept in the contaminated zone