. 2018 Jun 9;96(9):3549–3557. doi: 10.1093/jas/sky227

Table 3.

Joint angles for breeding herd female feet leg conformation trait¹ (least squares means ± SE) from 277 post first parity sows housed in three different farms from 0 to 12.4 wk of gestation

	Knee		Front pastern		Rear pastern		Hock		Rear stance
Variable	LS Means	SE	LS Means	SE	LS Means	SE	LS Means	SE	LS Means	SE
Farm²
A	158.8^a	0.6	52.6^a	0.7	51.4^a	0.5	147.3^a	0.5	88.5^a	0.7
B	158.4^a	0.6	53.5^a	0.7	51.3^a	0.5	146.8^a	0.5	88.4^a	0.7
C	157.5^a	0.6	50.0^b	0.8	47.6^b	0.6	146.5^a	0.5	82.4^b	0.7
Gestation age³
Linear	−0.29 ± 0.01*		−0.01 ± 0.17		−0.06 ± 0.13		0.19 ± 0.12		−1.25 ± 0.17*
Quadratic	NS		NS		NS		NS		0.14 ± 0.05*

¹Evaluated as per Stock et al. (2017) using an objective method based on digital images.

²Females originated from a single gilt development unit and were distributed across three farms, (farm A—n = 97, farm B—n = 98, and farm C—n = 82) after selection at approximately 150 d of age.

³Results for continuous linear and quadratic covariates are presented as the regression coefficient ± SE.

^a,bWithin columns, significant differences between predictor variables (P < 0.05).

*P<0.05.

NS = not significant.