Genomic prediction of disease occurrence using producer-recorded health data: a comparison of methods

Table 1 Descriptive statistics for full, training, and validation datasets with and without daughter restrictions enforced

Data without daughter restrictions
	Full data	Training data	Validation data
Years included	1999 - 2012	1999 - 2008	2009 - 2012
Number of cows	97 310	79 147	18 163
Number of mastitis incidences	10 442	8391	2051
Number of sires	10 549	8410	3269
Number of maternal grandsires	11 040	8938	3636
Average number of daughters per sire	9	9	6
Average mastitis incidence	0.107	0.106	0.113
Average mastitis incidence per sire	0.104	0.104	0.113
Data with daughter restrictions
	Full data	Training data	Validation data
Years included	1999 - 2012	1999 - 2008	2009 - 2012
Number of cows	26 510	23 753	2757
Number of mastitis incidences	2771	2422	349
Number of sires	177	153	59
Number of maternal grandsires	4328	3823	909
Median number of daughters per sire	87	91	37
Average mastitis incidence	0.105	0.102	0.130
Average mastitis incidence per sire	0.106	0.100	0.140

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