Table 5.

Quartiles for sow and piglet characteristics associated with survival to weaning, experiment 1^1,2

Birth weight, g	<1,190	1,190 to 1,430	1,440 to 1,660	>1,670	SEM	P-value
Weaned, %	59.5a	82.1b	84.4b	88.6c	1.20	<0.001
Total born, n	<13	13 to 15	16 to 17	>17	SEM	P- value
Weaned, %	87.1a	83.7a	78.3b	69.5c	1.02	<0.001
Colostrum intake, g	<337	337 to 442	442 to 550	>550	SEM	P-value
Weaned, %	73.7c	91.8b	94.9a	95.9a	1.15	<0.001

¹Percentage weaned is calculated as weaned count divided by total born.

²A total of 6,939 piglets (6,458 live-born and 481 stillborn) were categorized into quartiles within each response variable, with each quartile representing ~25% of sows or piglets in the study population.

^a–cMeans within a row not sharing a common superscript differ P < 0.05.