Ladysh I. Mophological and functional mechanisms of formation adaptive and productive quantities of sheep with different genotypes under condition of Ukrainian steppe.

The thesis is devoted to disclosure of morphological functional mechanisms of formation adaptive and productive quantities of sheep with different genotypes under condition of Ukrainian steppe. It is stated, that Tavrian type of Askanian fine-fleeced sheep species adapt well to natural climatic conditions of Lugansk region, indicative of these are high indices of live weight, wool productivity and high level of inheritance maternal characteristics of wool productivity by daughters such as clip of washed wool and wooliness rate: r=0,480 and 0,540. The adaptive reactions of ewe's organism on effect of such stress factors as lambing, weaning, first shearing, labeling, cardiogram, crossing, feeding stress are studied. For the purpose of preventing technological stress caused by weaning lambs from ewes it is advisable to use: preparation "SILKEFER", which stimulates blood formation processes, condition of connective tissue stabilization, reduction of stress factors toxic influence upon lamb organism, average daily weight gain; preparation "RIBOTAN" which increases stress resistance at weaning, live weight indices, intensifying defence adjustment mechanism; preparation "AISIDIVIT" which decreases negative influence of flock regroupment on lambs health, normalizes leucogram and proteinogram composition, facilitates live weight gain; phytosorbent with Echinacea purpurea that ensures reducing heavy metals content particularly in the lamb wool and raises wool productivity and adjustment shielding functions of sheep organism.