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Information × Registration Number 0220U104434, 0119U001042 , R & D reports Title Improvement of meat productivity of pigs and sheep on the basis of innovative technological and breeding solutions popup.stage_title Head Kramarenko Serhii S., Registration Date 17-12-2020 Organization Mykolayiv National Agrarian University popup.description2  The object of the study was the influence of genetic and non-genetic factors on the reproductive qualities of ewes, safety, live weight of lambs at birth and weaning. The aim of the work is to study the influence of the year of lambing, age of ewes, nest size, sex of lambs and distribution of sexes in twins (ram / ram, bright / bright, ram / bright) on reproductive qualities of ewes, safety, live weight of lambs at birth and weaning. Research methods - zootechnical (assessment of qualitative and quantitative indicators of productivity); laboratory methods; mathematical and statistical analysis; modeling and forecasting methods; biochemical (physiological state of animals). As a result of the research work, the probable influence of the year of lambing, breed, genotype of the breeding ram, age of ewes, nest size (type of birth) and sex of lambs on reproductive qualities of ewes, safety, live weight of lambs at birth and weaning was established. Stress-sensitive young animals, which were raised in the absence of competition for life with stress-resistant animals reached a live weight of 100 kg 2.8 days earlier, had higher gains by 25.7 g (P> 0.999), with lower feed costs - by 1.7% . The use of phytobiotics during weaning can be an effective method of replacing the use of antibiotics, which increases the safety of piglets, increases the average daily gain of live weight and the development of beneficial microflora in the intestines of pigs. Product Description popup.authors Atamaniuk Ihor P. Kiseleva Svetlana O. Kramarenko Olexander S. Lykhach Vadym Ya. Luhovyi Serhii I. Faustov Rostyslav V. popup.nrat_date 2020-12-17 Close