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Information × Registration Number 0215U003422, 0112U001683 , R & D reports Title Improvement of the ways of animal performance increase on the basis of the modern theoretical and analytical methodologies. popup.stage_title Head Ivan Chumachenko, Registration Date 30-01-2015 Organization National agricultural university of Ukraine popup.description2 Object of research - sires of the Holstein breed, cows of Ukrainian Black and White breed, replacement heifers, blood and milk of genotyped cows. The purpose of research was to study the growth parameters of replacement heifers grown under various quantities of colostrum and restricted whole milk diets, as well as study of the gene polymorphism of proteins by kappa-casein locus in cows and Holstein sires of Canadian selection with further establishing of correlation between genotypes and milk performance, reproductive traits and breeding value of animals. Methods of research - zootechnical (live weight and average daily gains monitoring, linear measurements, milk performance evaluation by milk yield, butterfat and protein content, fat and protein yield, feed conversion), physical and chemical (application of the DNA techniques), economical (cost of gain). It has been proved that the use of high quality colostrum followed by feeding of 400 kg whole milk or 150 kg whole milk and 250 kg milk replacer together with concentrate mix or commercial starter feed allowed to achieve higher rates of gain in heifers as compared to the heifers fed lower quality colostrums. Feeding of milk replacer together with by- feeding of commercial starter allowed to save 150 kg of whole milk and reduced feed cost by 258 UAH as well as total production cost by 430 UAH per head. On the basis of cow identification at VP NUBiP of Ukraine "Agronomic research station" by kappa-casein locus it has been discovered that A and B alleles frequencies were 0,93 and 0,07 with homozygous (AA) and heterozygous (AB) frequencies 0,868 and 0,132 respectively. Homozygous animals of BB genotypes are absent in the herd. Area of application - dairy production. Product Description popup.authors Антонюк Тетяна Андріївна Журавель Михайло Петрович Коропець Лариса Анатоліївна Найденко Катерина Павлівна Работіна Євгенія Сергіївна Тараненко Григорій Семенович Токар Юлія Іванівна popup.nrat_date 2020-04-02 Close