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. 2014 Nov 11;9(11):e110589. doi: 10.1371/journal.pone.0110589

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© 2014 Meagher et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Data are least squares means ± standard errors. Farm*treatment was significant: F_4,604 = 3.56, p = 0.007. * indicates a significant treatment effect according to Tukey's HSD tests. Overall, enrichment for any length of time increased early litter size (contrast: F_1,604 = 4.95, p = 0.026).