Variance components and correlations of female fertility traits in Chinese Holstein population

Table 1 Descriptive statistics of female fertility traits in a Chinese Holstein population

Trait^a	N	Mean	SD	Minimum	Maximum
IFLh	88,647	32.1	69.2	0	365
CRh	88,647	0.626	0.484	0	1
AISh	88,647	1.742	1.286	1	8
NRR56h	88,647	0.732	0.443	0	1
ICF	126,985	82.1	37.3	20	230
DO	126,985	161.6	104.9	20	595
IFLc	126,985	79.5	100.1	0	365
CRc	126,985	0.356	0.479	0	1
AISc	126,985	2.777	1.994	1	8
NRR56c	126,985	0.584	0.493	0	1

^a IFL interval from first to last insemination, CR conception rate at first insemination, AIS number of inseminations per conception, NRR56 non-return rate at 56 days after first insemination, ICF interval from calving to first insemination, DO days open. For traits expressed in both heifers and cows, a suffixes h (for heifers) or c (for cows) was attached to the trait abbreviations

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