Table 2.

Phenotypic differences observed for the parameters measured in Duroc, Landrace and Large White litters

Variables	D^a	L^b	LW^c	Total	F value	P-value
Number of sows	12	15	31	58
Order of parturition	2.750	4.067	4.161	3.845	3.555	0.035
Number of piglets born alive per litter
Mean	8.917	12.600	11.903	11.466	11.85	<.0001
SD	2.275	1.724	2.256	2.494
Average LBW at birth^d, kg
Mean	14.033	17.207	16.890	16.381	5.503	0.006
SD	3.679	2.081	2.828	3.060
Average piglet’s weight at birth, kg
Mean	1.588	1.376	1.432	1.450	5.437	0.007
SD	0.226	0.153	0.155	0.184
Number of alive piglets per litter at d 3
Mean	8.250	12.133	10.871	10.655	12.55	<.0001
SD	1.865	1.767	2.291	2.453
Number of dead piglets per litter at d 3
Mean	1.600	1.750	1.583	1.619	0.104	0.902
SD	1.342	0.500	0.996	0.974
Average LBW at d 3^d, kg
Mean	16.400	21.167	19.758	19.428	4.948	0.010
SD	3.993	3.059	4.264	4.211
Average piglet’s weight at d 3, kg
Mean	2.001	1.761	1.826	1.846	4.326	0.018
SD	0.275	0.240	0.213	0.244
LWG^e, kg
Mean	3.085	4.453	4.103	3.983	0.102	0.902
SD	0.864	1.461	1.771	1.598
Number of weaned piglets
Mean	7.333	11.133	10.032	9.759	11.59	<.0001
SD	1.875	1.552	2.316	2.423
Incidence of diarrhoea
Mean	3	1	4	8	1.048	0.357

^aDuroc

^bLandrace

^cLarge White

^dlitter body weight

^ethe average litter body weight gain from birth to d 3