Table 5.

Correlations between placental efficiency (PE) and fetal and placental variables on day 70, 90, and 110 of gestation in gilts.

	Day 702		Day 90		Day 110
Variables1	r	P-value	r	P-value	r	P-value
PE * FW, g	−0.58	<0.0001	−0.36	<0.01	0.09	NS
PE * PW, g	−0.83	<0.0001	−0.81	<0.0001	−0.44	<0.01
PE * CRL, cm	−0.37	<0.05	−0.12	NS	0.16	NS
PE * HWT, g	−0.52	<0.01	−0.27	<0.01	0.10	NS
PE * LIVWT, g	−0.59	<0.0001	−0.32	<0.01	0.05	NS
PE * ISL, cm	−0.26	NS	−0.39	<0.01	0.13	NS
PE * FFV, mL	−0.32	<0.05	−0.22	<0.05	−0.38	<0.01

¹Placental efficiency (PE), placental weight (PW), fetal weight (FW), crown-rump length (CRL), heart weight (HW), liver weight (LIVWT), implantation site length (ISL), fetal fluid volume (FFV).

²Pearson’s correlation coefficient (r), not significant (NS).