Rearing of newborn piglets in nests classified by their weight

Usually, the first to be born are larger piglets. They occupy the front nipples of the sow, which produce more milk. Small piglets are born later, and they have posterior low-milk nipples. Our research aims to study the possibility of the redistribution of nests of newborn piglets depending on their weight. Crossbred sows obtained from crossing sows of a large white breed with the board of the Landrace breed were selected for the experiment. Newborn piglets were weaned from their natural sows, and new nests were formed, in which all piglets were only large, medium, or small. Before the experiment started, the small piglets' weight was less than that of the control by 10.1%, and after 60 days of our research, it was 6.5%. The safety of small piglets was 73.5%, which is lower than in other groups by 0.8-3.0%. The maximum milk content was in sows feeding medium-sized piglets, and the shortest - was in sows feeding small piglets. The formation of new nests of piglets, depending on their weight, allows us to grow large and small piglets, which die under normal conditions.