Productive qualities of sows and their posterity depending on the duration of the suspension period

The Article examined the dependence of reproductive, feeding, slaughtering properties and physical and chemical indicators of meat on duration of sucking period in pigs of modern intensive genotypes. It was found that shortening of lactation period from 28 to 21 days resulted in decrease of total number of piglets born by 6.28%, fertility by 7.33%, piglets' litter weight at birth by 5.49%, average weight of one piglet by 23 34%, litter weight during this period by 17.70%, absolute by 28.57% and relative by 11.08 gains, and the increase by 1.49% of fertility, by 6.34% the viability by 7.34% of the number of piglets when weaned, by 2.21% of their daily average gains in the feeding period and 6.25% of the complex index of reproductive qualities. At the same time reduction of lactation period of sows by 7 days increased the use rate of sow by 5.35% which additionally allowed to get from it by 13.95% more business piglets, by 25% use the farrowing crate more intensively, decrease by 27.25% annual costs of animal feed and additionally to receive UAH 1,331 of cash during this period. At early weaning, the piglets had by 2.90% - 11.35% lower growth rate, a by 0.83% worse viability rate, and by 0.03 kg increase in feed efficiency at the time of their nursing and feeding. There is no dependence of slaughtering properties, content of meat, lard and bones in carcasses and physical and chemical properties of meat on duration of sucking period. Their dependence on pre-slaughter body weight was found.