. 2018 Jun 5;96(10):4313–4326. doi: 10.1093/jas/sky219

Table 4.

Maternal growth and feed efficiency of gestating sows as influenced by parity and stage of gestation

	Day of gestation, d
	5 to 39	40 to 74	75 to 109
Energy used for maternal protein and lipid deposition, kcal¹
Parity 1	1,203^ax ± 21.7	692^bx ± 21.7	−35^cx ± 21.7
Parity 2	1,767^ay ± 24.9	1,380^by ± 24.9	721^cy ± 24.9
Parity 3+	1,298^az ± 20.6	1,016^bz ± 20.6	334^cz ± 20.6
BW, kg¹
Parity 1	154.8^ax ± 0.94	167.1^bx ± 0.94	178.1^cx ± 0.94
Parity 2	165.5^ay ± 1.09	170.1^bx ± 1.09	172.8^by ± 1.09
Parity 3+	190.0^az ± 0.90	193.2^bz ± 0.90	195.3^bz ± 0.90
ADG, kg¹
Parity 1	0.47^ax ± 0.011	0.27^bx± 0.011	0.41^cx ±0.011
Parity 2	0.32^ay ± 0.013	0.04^by ± 0.013	0.15^cy ± 0.013
Parity 3+	0.23^az ± 0.011	−0.04^bz ± 0.011	0.34^cz ± 0.011
G:F²
Parity 1	1.12^ax± 0.038	0.71^bx ± 0.062	−2.17^cx ± 0.481
Parity 2	0.67^ay ± 0.030	0.04^by ± 0.042	0.62^ay ± 0.079
Parity 3+	0.73^ay ± 0.032	−0.16^bz ± 0.046	0.04^bz ± 0.157

A total of 712 females (Camborough, PIC, Hendersonville, TN) are used in a 108-d trial with 249, 188, and 275 females in parity groups 1, 2, and 3+. Values with different superscripts within a row^abcde or column^xyz differ, P < 0.05.

¹Values represent the mean, per period of gestation.

²Values represent the median per period of gestation.