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. 2014 Dec 2;5:410. doi: 10.3389/fgene.2014.00410

Figure 4.

Figure 4

Comparison of old-type sows (♦) and modern-type sows (Inline graphic) for rooting activity during the first 4 h after the onset of farrowing. Significance levels below the X axis refer to differences between successive periods of time, obtained with both lines merged together. Significance levels reported on the graph above mean values refer to line differences: *P < 0.05; ***P < 0.001.