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Information × Registration Number 0223U005665, 0121U107903 , R & D reports Title To determine the adaptive features and nature of inheritance of polygenic-hereditary traits of pigs of different genotypes and to develop an integrated system of creating a highly productive population popup.stage_title Head Khalak Viktor I., Кандидат сільськогосподарських наук Registration Date 26-12-2023 Organization State Institution "Institute of Grain Crops" of the National Academy of Agrarian Sciences of Ukraine popup.description2  The life expectancy and breeding use of sows of the large white breed and the combination of ½ large white × ½ landrace animals, the level of adaptation, operational value, reproductive qualities, their repeatability and inheritance were studied, a database was created and methodological recommendations were prepared "Integrated system of creating a highly productive population of pigs of various genotypes and level of adaptation". Taking into account intrabreed differentiation according to the index "level of adaptation" (RA) and operational value, it was established that the difference between sows of the experimental groups in terms of life expectancy, duration of breeding use, as well as signs of reproductive qualities ranges from 38.0 to 54.9%. The maximum increase in additional production was obtained from sows of the III sub-experimental group of intrabreed differentiation according to the RA index (+1.77%), the I group of intrabreed differentiation according to operational value - +0.76%. Inheritance coefficients (h2) of multifertility and litter weight at the time of weaning at the age of 28 days in sows of the large white breed are equal to 0.134 and 0.166. The coefficient of repeatability (r) of the specified features is within 0.036 ... 0.265 and 0.092 ... 0.226, respectively; pairwise correlation coefficients between traits are highly reliable and range from –0.701 (tr = 17.53; P < 0.001) to +0.798 (tr = 27.95; P < 0.001). According to the results of the research, methodological recommendations "Integrated system of creating a highly productive population of pigs of different genotypes and levels of adaptation" have been prepared. Product Description popup.authors Kozyr Volodymyr S. Kolbasina Tetiana V. Khalak Viktor I. popup.nrat_date 2023-12-26 Close