Efficiency of growing and fattening of hybrid pigs of English origin under dry and combined systems of their feeding

Abstract

The article aimed to study the efficiency of rearing and fattening pigs with constant drying throughout life and variable during fattening feeding systems. It was established that changing the feeding system from dry to liquid led to an acceleration of the intensity of the piglets and, as a result, a 7.8 % increase in their weight at the end of fattening did not worsen feed conversion in pigs, but on the contrary, led to its improvement by 2.9 % on fattening and by 1.8 % during the period of rearing and fattening. Feed consumption per head and kilogram of growth during the rearing period did not differ significantly between groups of animals, which, accordingly, did not differ in cost. Meanwhile, during fattening, pigs that were switched to liquid feeding consumed 6.8 % more feed, resulting in 6.8 % more feed per head during the fattening period and a correspondingly higher cost. However, due to the higher intensity of growth, feed conversion in them turned out to be 2.9 % better, contributing to a 2.9 % reduction in the feed cost for 1 kg of growth compared to animals that consumed dry feed at this stage. No difference was found in the efficiency of rearing piglets under constant feeding during the weaning period and the growing period, while during the fattening period, the operational cost of fattening one head was found to be higher by 6.8 %, by 5.0 % the cost price and by 7.8 % of its cost completion of fattening, 8.8% income from fattening one animal and 1.9 % better profitability of this process in a group of animals with a variable feeding system. At the same time, due to better growth indicators, the animals of this group showed a 1.0 % lower cost of 1 kg of gain during fattening and a 2.6 % lower cost of 1 kg of live weight at its completion. It is also established that the cost of 1 kg of growth for growing and fattening is lower by 2.3 %. The cost of one head is higher by 5.0 %, its market value by 7.8 %, income from sales by 13.2 %, and by 7.8 % profitability of the entire production cycle of obtaining, growing, and fattening pigs. Changing the feeding system from dry to liquid after the growing-out period increased the efficiency of the whole process of acquiring, growing, and fattening pigs.