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. 2015 Mar 15;16(1):187. doi: 10.1186/s12864-015-1352-4

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© Howard et al. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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First vs Second PC analysis for the bull ¹ and cow ² analysis by population. ¹Number of bulls in the analysis was 1810: 736 from United States (US); 306 from Australia (AU); 768 from New Zealand (NZ). ²Number of cows in the analysis was 1933: 1047 from US; 886 from AU.