Sylychenko K. A. Longevity of Swiss Cows Subject to Application of Intensive Use Technology at the Industrial Complex for Milk Production. – Qualifying scientific work as a manuscript.
Dissertation for the degree of Doctor of Philosophy on specialty 204 Technology of Manufacture and Processing of Livestock Products – Dnipro State Agrarian and Economic University, Dnipro, 2023.
Dissertation is devoted to solving the problem of preserving and extending the longevity of Swiss cows kept in large industrial complexes with the application of intensive use technology.
The goal of the work is to establish the optimal duration of using Swiss cows with the application of intensive milk production technology. The problem of productive longevity of cows is relevant both for the development of the dairy sector of agriculture and the economic development of Ukraine. Difficulties in solving this problem are caused by the extreme intensification of the use of cattle during their life, the peculiarities of the implementation of genetic factors that program high indicators of productive longevity of cows, in the conditions of external factors, which include feeding and conditions of livestock.
The data obtained during the research work, the factor and regression analysis and calculation of economic efficiency of additional products of made it possible to determine predictively important indicators for predicting the productive longevity of a herd of cows of the Swiss breed with intensive technology of use at the industrial complex for milk production.
The results of the dissertation may be used in the research work of departments and in the educational process for training specialists in specialty 204 Technology of Manufacture and Processing of Livestock Products, as well as in the formation of a highly productive long-term herd of cows of the Swiss breed to be kept on industrial complexes.
The dissertation is presented on 223 pages of computer text and consists of an introduction, literature review, a description of the condition and materials and research methods, the results of the author’s own research, analysis and generalization of the results obtained, conclusions, recommendations for production, a list of sources and appendices used. It contains 36 tables and 7 figures. The list of references includes 237 sources (137 in Cyrillic, 100 in Latin).
Keywords: Swiss breed, cows, longevity, milk productivity, feeding, milk yield, fat, protein, polymorphism, genes, kappa-casein, productivity, reproductive ability.
