Meat productivity of calves of Simmental breed in the conditions of global climate change in the Steppe zone of Ukraine

Abstract

Goal. To assess the technical implementation and production efficiency of bridge mechanization for the track system of agriculture in the technological processes of tillage and application of technological materials (on the example of an agricultural tool with a developed design). Methods. Experimental studies were performed according to both conventional and developed methods using a modern strain gauge and control measuring equipment with the analog-to-digital conversion of signals from information sensors. Results. According to the results of experimental studies of the bridge agricultural unit as a part of agricultural tools for surface tillage, high adaptability to the implementation of technological processes for tillage has been proved. Comparative graphs are built of normalized correlation functions and normalized spectral densities of profiles of irregularities of traces of a constant technological track and profiles of irregularities of agrophones after the passage of a toothed harrow, as well as a S-shaped spring ripper, and also a rotary harrow. Based on them, it is established that the work of agricultural tools for surface tillage has a good effect on the nature of the non-uniformity of oscillations of their traction resistance. Conclusions. The main generator of the formation of irregularities of the longitudinal profile of the soil traces of the constant technological track is the parameters of the soil hooks of the tires of the wheels of the bridge agricultural unit. The oscillations of the irregularities of the profiles of the treated agrophones by the bridge agricultural unit with attached agricultural tools (S-shaped spring ripper and rotary harrow) are smoother as a result of the movement of the agricultural unit along the compacted traces of a constant technological track. The quality of tillage with units based on bridge agricultural unit is approximately the same as in similar traditional machine-tractor units. But the specific energy consumption per 1 ha of the cultivated area with new units is lower by 40%.

Influence of keeping technology on the weight gain of the Aberdeen-Angus breed young animals in the colostrum period

“…Average daily weight gain also decreases with age. By the age of 12 months, animal growth intensity is much higher compared to subsequent periods (Kozyr, 2020). Nosok et al (2020), Pesonen et al (2012), andTsvigun et al (2020) focused on increasing the weight gain and productivity of livestock by crossing animals of different origins.…”

Productivity of the young cattle of the new population of the bukovynska zonal type of the hornless meat simmental of ruminants in the conditions of the mountain area of the carpathian region of Вukovyna

“…B., Kohut M. I., 2017;Dankiv V. Ya., 2017;Lukash V. P., Shkuryn G. T., 1998;Kogut M. I., Fedak V. D., 2016;Kozyr V. C., 2013;Kozyr V. S., 2020;Kapralyuk O. V., 2019; Orihivskyi T. V., Mazur N. V., Fedorovych V. V., 2019; V. V. Fedorovych, T. V. Orikhivskyi, N. P. Babik, 2016;Fedorovych V. V., 2017;Shkurin G. T., 1998). Проте відомості про ефективність різних нових типів годівлі з використанням різних рецептів раціонів та утримання нової популяції м'ясної худоби в різних зонах Карпатського регіону практично нині відсутні і не вивчалися в далекому минулому.…”