A large variation in the number of detected CNVRs was seen in the SNP array-based studies. The number of CNVRs identified using the Illumina BovineSNP50 BeadChip ranged from 101 to 811. The two studies utilizing the Illumina BovineHD BeadChip had an even greater discrepancy in number of CNVRs, with 3438 CNVRs reported by Hou et al. (2012a) and only 247 CNVRs reported by Wu et al. (2015). The overlap of our results with these studies ranged from 0% in the BovineSNP50 chip studies of Hou et al. (2012b) and Jiang et al. (2012) to 79.2% in the BovineHD chip study of Hou et al. (2012a).