Fig. 6

Effects of linoleic acid intake during lactation on culling rate. Bars represent the percentage of sows removed from the herd (relative to the number of weaned sows) as cull sows (n = 84 sows fed diets containing no added lipids and n = 152, 163, and 144 sows for < 115, 115 to 155, and > 155 g/d of linoleic acid intake, respectively). This analysis was performed using mature sows (parities 3 to 5) from 3 studies [31, 32, 48]. Sows fed diets containing no added lipids consumed 84.4 ± 20.3 g/d of linoleic acid. Increased consumption of linoleic acid during lactation increasingly reduced the number of sows removed from the herd as culls (P = 0.085). Data were analyzed by logistic regression using the GLIMMIX procedure of SAS using a logit link function. Means represented by bars without a common letter are different (P < 0.05)