Effect of housing system during pregnancy on reproductive parameters of sows

ABSTRACT The aim of this study was to evaluate the reproductive performance sows in individual stalls (Stall) or group-housed into groups on days 3 5 (Pen5) 38 42 (Pen42) after breeding. data collected from operating system farm establishing average weekly performances that gave birth, for four years, except Pen5 system, which evaluated three years. Statistical analyses were performed using SAS®, MIXED (for quantitative traits), NPAR1WAY categorical traits) and LOGISTIC (binomial procedures, as a repeated measure. Sows Stall had piglets with higher birth weight them (P<0.05), however born alive, total weaned, litter weight, duration farrowing lower than (P<0.0001). There no difference between systems gestation period mummified piglets. Pen42 percentage shorter period, when compared (P<0.0001), similar results farrowing, stillbirths,