The Sows productivity and annual dynamics of piglet growth depending on the design features of the microclimate system

Abstract

This article studied the dependence of the reproductive qualities of sows and the intensity of Danish suckling piglets growth on the seasons and the structural features of the microclimate system in the gender. It was found that sows kept in rooms with a geothermal ventilation system had better retention rates, weights of 1 head at weaning, masses of piglets at weaning, fewer and proportion of still-born pigs compared to analogues that were kept during this period in the classical system of support the climate. At the same time, there are no significant differences in the number of piglets at birth and their number when weaned. The estimated index for a limited number of reproductive traits and the breeding index of sows were also found higher in 1,01% and 1,09%, respectively, as for sows whose suckers were subjected to geothermal ventilation. There is no significant difference between the absolute, average and relative growth rates of piglets maintained under different microclimate systems throughout the year. This is due to the weak influence of the ventilation type factor on the growth rate within 7,71 – 10,20%. The intensity of growth of suckling pigs in the conditions of the both industrial complex ventilation systems of pigsties increased in winter and spring and decreased in summer and autumn. It was caused by a significant strong influence of the factor of season influence on the absolute, average and relative growths, which characterize it within 21,83 to 23,54%. Due to the identified dependence of the reproductive qualities of sows and the intensity of suckling pigsgrowth on the type of ventilation and the time of year, it should be noted that further studies of these factors influence are important to continue. Key words: sow, piglet, type of ventilation, multiple pregnancy, weight of the nest of piglets, safety, season of the year.