. 2018 Oct 17;97(1):359–373. doi: 10.1093/jas/sky409

Table 3.

Least square means (±SE) of fetal and utero-placental variables on day 70, 90, or 110 of gestation in gilts

	Day			Sex		Sex * day						Effect P-value²
Variable¹	70	90	110	F	M	F, 70	M, 70	F, 90	M, 90	F, 110	M, 110	Day	Gilt(day)	Sex	Sex * day
FW, g	223 (15)^a	602 (10)^b	1197 (13)^c	656 (10)^a	692 (11)^b	219 (19)^a	227 (23)^a	584 (15)^b	620 (15)^b	1166 (19)^c	1228 (18)^d	<0.0001	<0.0001	<0.05	NS
PW, g	136 (7)^a	172 (5)^b	213 (6)^c	170 (5)^a	177 (5)^a	137 (8)^a	135 (10)^a	169 (7)^b	176 (7)^b	206 (9)^c	221 (8)^c	<0.0001	<0.0001	NS	NS
PE	1.8 (0.1)^a	3.7 (0.1)^b	5.7 (0.1)^c	3.7 (0.1)^a	3.7 (0.1)^a	1.8 (0.1)^a	1.8 (0.2)^a	3.6 (0.1)^b	3.8 (0.1)^b	5.8 (0.1)^c	5.6 (0.1)^c	<0.0001	<0.0001	NS	NS
CRL, cm	17.4 (0.2)^a	23.5 (0.1)^b	29.0 (0.2)^c	23.2 (0.1)^a	23.4 (0.1)^a	17.2 (0.3)^a	17.6 (0.3)^a	23.2 (0.2)^b	23.7 (0.2)^b	29.1 (0.3)^c	29.0 (0.2)^c	<0.0001	<0.0001	NS	NS
HWT, g	1.7 (0.2)^a	4.9 (0.1)^b	11.3 (0.1)^c	5.8 (0.1)^a	6.1 (0.1)^b	1.7 (0.2)^a	1.7 (0.2)^a	4.8 (0.2)^b	5.0 (0.2)^b	10.8 (0.2)^c	11.7 (0.2)^d	<0.0001	<0.0001	<0.05	<0.05
LIVWT, g	7.8 (0.7)^a	16.7 (0.5)^b	40.9 (0.6)^c	21.4 (0.5)^a	22.2 (0.5)^a	7.7 (0.9)^a	7.9 (1.1)^a	16.6 (0.7)^b	16.8 (0.7)^b	40.0 (0.9)^c	41.8 (0.8)^c	<0.0001	<0.0001	NS	NS
ISL, cm	17.3 (0.7)^a	19.4 (0.5)^b	26.8 (0.6)^c	20.7 (0.5)^a	21.7 (0.5)^a	17.3 (0.8)^a	17.3 (1.0)^a	18.8 (0.6)^ab	20.0 (0.6)^b	25.8 (0.9)^c	27.8 (0.8)^c	<0.0001	<0.0001	NS	NS
FFV, mL	237 (12)^a	178 (8)^b	72 (11)^c	157 (8)^a	168 (9)^a	232 (15)^a	243 (18)^a	163 (11)^b	192 (12)^b	75 (16)^c	69 (14)^c	<0.0001	<0.0001	NS	NS
P-VD, %	1.0 (0.2)^a	1.4 (0.1)^a	2.7 (0.2)^b	1.9 (0.1)^a	1.5 (0.2)^b	1.1 (0.2)^a	0.8 (0.4)^a	1.6 (0.2)^a	1.3 (0.2)^a	3.0 (0.2)^b	2.4 (0.2)^c	<0.0001	<0.0001	<0.05	NS
E-VD, %	2.9 (0.2)^a	2.5 (0.1)^a	2.8 (0.2)^a	2.9 (0.1)^a	2.5 (0.2)^b	3.3 (0.2)^a	2.6 (0.4)^ab	2.4 (0.2)^b	2.5 (0.2)^b	3.1 (0.2)^a	2.5 (0.2)^b	<0.1	NS	<0.05	NS

^a–dLeast square means with different superscripts within a row and per effect (day, sex, sex * day) differ (P < 0.05).

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), placental vascular density (P-VD), endometrial vascular density (E-VD).

²Not significant (NS).