Table 3.

Main effects of fescue seed treatment (endophyte-infected, E+ or endophyte-free, E−) and stage of gestation (MID, days 35 to 85 or LATE, days 86 to 133) on fetal size and organ weights at day 133 of gestation¹

Stage of gestation	MID		LATE
Fescue seed treatment	E−	E+	E−	E+	SE
Fetus, n	28	31	29	30
Fetal body weight, g	4297.1	4185.4	4465.5a	4017.0b	512.36
Crown-rump length, cm	51.12	50.92	54.55c	53.57d	2.63
Thoracic circumference, cm	35.07	34.98	35.79a	34.26b	1.71
Abdominal circumference, cm	31.06	29.90	31.36c	29.61d	3.80
Carcass weight, g	1953.1	1881.1	2024.5a	1809.8b	282.36
Pelt, head, feet weight, g	1409.0	1375.3	1453.1a	1331.2b	152.82
Digesta, g	680.1	648.4	699.9a	628.6b	123.08
Individual organs, g
Brain	50.56	48.82	50.54	48.85	6.09
Heart	33.19	31.25	33.79c	30.64d	5.52
Liver	107.29	109.38	115.74a	100.94b	19.61
Lungs	148.21	149.91	149.43	148.69	22.71
Thymus	17.93	16.52	19.30a	15.15b	6.83
Percent of EBW basis
Carcass	48.31	47.82	48.37	47.76	2.03
Pelt, head, feet	34.84	35.33	34.67	35.50	1.99
Digesta	7.25	7.06	7.36	6.94	1.33
Individual organs, % EBW
Brain	2.46	2.56	2.34b	2.67a	0.42
Heart	0.82	0.80	0.80	0.82	0.090
Liver	5.16	5.52	5.43	5.25	0.67
Lungs	7.24	7.66	7.06b	7.84a	1.00
Thymus	0.83	0.84	0.88	0.78	0.31

^abMeans in the same row with uncommon superscripts differ (P < 0.05).

^cdMeans in the same row with uncommon superscripts differ (P < 0.10).

¹The interaction between fescue seed treatment and stage of gestation was nonsignificant (P > 0.15).