Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 24 ISSUE 1
Written by Oleksandr MYKHALKO, Mykola POVOD, Bogdan GUTYJ, Olga KORZH, Olena MIRONENKO, Tatiana KARUNNA, Vasyl BILOKOPYTOV, Nadiia KREMPA

The article investigated the influence of systems for creating a microclimate with uniform pressure and geothermal negative pressure in combination with liquid and dry feeding systems on the parameters of the microclimatic environment in the piglet rearing room and the intensity of their growth. For this purpose, four groups of 150 pigs each were formed, two of which were kept with a uniform pressure ventilation system and two with negative pressure geothermal ventilation. For each ventilation system, one group was fed dry granulated compound feed, and two groups were fed liquid mixtures based on the same compound feed with an addition of 2.7 liters of water per kilogram of feed. The pigs were kept under the same conditions and were fed a diet that was equivalent in composition and nutritional value. Group I included piglets that received dry feed and were raised in a room with uniform pressure ventilation. The animals in the group II were kept in the same room, but consumed liquid feeds. Pigs in the III and IV groups were kept in rooms with geothermal ventilation. Piglets in the III group were fed dry feed, while piglets in the IV group were fed liquid feed. The results of the study showed that the ventilation system has an influence of 76.48% on relative humidity, 76.96% on ammonia content, 65.77% on carbon dioxide content and 65.07% on hydrogen sulfide content. The feeding system only affects the hydrogen sulfide content with a strength of 5.79%. Better microclimate parameters were provided by uniform pressure ventilation. Higher average daily gains, higher feed consumption, better feed conversion and lower cost per 1 kg gain were found in groups of pigs fed liquid feed and kept with geothermal ventilation.

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