Table 4.

Differences (least square means (± SE]) in saliva haptoglobin, hair cortisol, and reproductive performance of 240 sows housed in either conventional (CONTROL; n = 120) or IMPROVED (n = 120) pens, as well as differences in the measures recorded for their offspring (birth weight, diarrhoea score)

Variable	CONTROL	IMPROVED	P-value
Sow measures
Haptoglobin (ng ml–1)	671.77 (± 53.91)	463.36 (± 54.14)	0.007
Hair cortisol (μg dL–1)	0.09 (± 0.01)	0.10 (± 0.01)	0.438
Born alive	14.55 (± 0.28)	14.88 (± 0.29)	0.417
Born dead	1.43 (± 0.11)	1.19 (± 0.10)	0.113
Mummified	0.40 (± 0.06)	0.23 (± 0.04)	0.013
Total born	16.45 (± 0.30)	16.34 (± 0.31)	0.800
Piglet measures
Birth weight (kg)	1.40 (± 0.02)	1.45 (± 0.02)	0.069
Total diarrhoea score (TDS)	5.43 (± 0.23)	3.72 (± 0.23)	< 0.001