Influence of biologically active substances of blood of Karakulsan sheep rim on preservation of gene pool and productivity

The article presents the results of a study of the influence of biologically active substances in the blood of Karakul sur sheep on the preservation of the gene pool and improving the quality of grown karakul sur skins. That the problem of preserving and restoring the Karakul gene pool of Surkhandarya breed type sheep, as well as improving the quality of original skins, developing and improving breeding methods on the farm and purposefully establishing work, has important scientific and practical significance in the development of the Karakul breeding industry in Uzbekistan.