Fig. 4From: Farm data analysis for lifetime performance components of sows and their predictors in breeding herdsPredicted parity at removal (a) and sow herd-life days (b) at different gilt ages at first-mating [11]. Herds were categorized into two groups based on the 75th percentile of farm means of herd size: large (≥1,017 sows) or small-to-mid herds (<1,017 sows)Back to article page