SELECTION AND TECHNOLOGICAL APPROACHES TO OPTIMIZATION OF PRODUCTION OF GENETIC RESOURCES OF THE POLISH BEEF BREED

The results of the assessment of the risk levels of narrowing of biological diversity in the population of the Polesie beef breed of cattle are presented. According to the FAO criteria, the breed is considered “at risk”, which is determined by the negative trend towards a reduction in numbers over the past 10 years (-Δ 1420 heads) and a decrease in the number of females < 1000 heads. A set of measures to optimize the production of genetic resources of the studied breed is theoretically substantiated. The proposed model of practical work in the in situ direction determines the need for reconstruction of premises, assessment of animals and organization of artificial insemination of the breeding stock. Work in the ex situ direction involves the creation of conditions for the accumulation of biological material (sperm, embryos, DNA) with the aim of its long-term storage and the possibility of use.