Operating value and economic efficiency of Large White breed sows

Abstract

The article deals with the reproductive qualities of Large White breed sows of Hungarian origin and their operational value. We also determined they economic efficiency. The experimental part of the research was conducted in agricultural formations of Dnipro region (AALLC "Druzhba-Kaznachejivka", Ltd. "Vidrodzhennja") and livestock laboratories of the State establishment Institute of Grain Crops NAAS. Evaluation of sows on the main indicators of the level of adaptation and reproductive qualities was performed taking into account the following quantitative characteristics: life expectancy, months, duration of breeding use, farrowing was obtained, total piglets were obtained, heads, live piglets were obtained, heads, fertility of heads, nest masst at the time of weaning at the age of 28 days (kg), preservation (%), duration of between farrowing period, days, number of unproductive days per farrowing. It is defined that sows of Large White breed of the controlled herd on the main indicators of reproductive qualities (fertility, head; nest mass at the time of weaning at the age of 28 days, kg) meet the minimum requirements of class I and elite class. A significant difference between the groups of animals of the categories "high operational value" and “low operational value” was defined by indicators “life expectancy, months” (29.9 months, td = 13.71), ”duration of breeding use, months” (29.6 months, td = 14.50), "farrowings were obtained" (5.7 farrowings, td = 14.50), "total piglets were obtained, heads" (70.5, heads, td = 13.85), "obtained live piglets, heads" (67.7 heads, td = 20.83), "fertility, heads " (3.3 heads, td = 10.31), nest mass at the time of weaning at the age of 28 days (6.5 kg, td = 2.55). Coefficients of phenotypic consolidation of signs of reproductive qualities in sows of different operational value ranged from -0.785 to +0.856. The maximum supplement in additional products on the indicator “nest mass at the time of weaning at the age of 28 days, kg” was obtained from sows of the category "high operational value" - 6.03%.

The level of discreteness of the signs of the own productivity of repair pigs and the reproductive qualities of sows of different breeding value: criteria for the selection of highly productive animals according to the BLUP index

“…Це ускладнює відбір високопродуктивних тварин за абсолютними показниками продуктивності та певний прогрес в селекційно-племінній роботі. А тому важливим напрямком в роботі з поголів'ям свиней вітчизняних порід, а також тваринами зарубіжної селекції в умовах племінних репродукторів і заводів України є пошук ефективних методів оцінки племінної цінності, відбір високопродуктивних тварин та їх інтенсивне використання (Berezovskyi, 1999;Getya et al, 2010;Akimov, 2010;Hryshyna & Fesenko, 2015;Khalak et al, 2021;Tsereniuk et al, 2021;.…”

Peculiarities of macro- and cytometric assessment of morphological structures of the domestic pig heart

“…The state of development of this branch of agriculture is currently relevant and is considered one of the priority tasks of Ukraine's agrarian policy (Kukhar, 2013;Stravsky et al, 2020). For the successful development of the livestock industry, there must be an increase in the productive qualities of animals (Bashchenko et al, 2020;Khalak et al, 2021;Popovych & Golinka, 2021;Pepko et al, 2022;Razanova et al, 2022). Significant importance for this is given to the prevention of contagious and non-communicable diseases, for which, along with organizational and economic measures, it is necessary to conduct an in-depth study of the body of domestic and carnivorous animals at the macro-and microscopic levels (Zurbrigg et al, 2018;Radzykhovskyi et al, 2022).…”

Life expectancy and reproductive qualities of sows of different intrabreed differentiation according to the "level of adaptation" index

“…The experience of agricultural specialists and the results of research by scientists show that animals of foreign breeding adapt differently to the conditions of keeping and feeding, and accordingly do not always realize their genetic potential in terms of reproductive qualities and other economically useful traits. Therefore, complex studies of the associative relationship between the level of adaptation and the productive qualities of sows are important zootechnical and economic issues [11][12][13][14][15][16][17][18][19].…”