Table 4.

Genetic (above the diagonal) and phenotypic (below the diagonal) correlations between heifer traits using a two-trait model

Traita	IFLh	CRh	AISh	NRR56h
IFLh		−0.86	0.85	−0.63
		(0.06)	(0.04)	(0.12)
CRh	−0.58		−0.94	0.84
	(2.24 E-03)		(0.03)	(0.06)
AISh	0.80	−0.70		−0.87
	(1.24 E-03)	(1.72 E-03)		(0.06)
NRR56h	−0.26	0.76	−0.56
	(3.14 E-03)	(1.42 E-03)	(2.32 E-03)

^a IFLh interval from first to last insemination in heifers, CRh conception rate at first insemination in heifers, AISh number of inseminations per conception in heifers, NRR56h non-return rate within 56 days after first insemination in heifers