Influence of sows’ parity on performance and humoral immune response of the offspring

Table 2 Growth performance of pigs from weaning to slaughter¹:28 to 144 d of age

Gestation	Multiparous (MP)		Primiparous (PP)		SEM²	P-value³
Lactation	MP	PP	MP	PP	(n = 5)	Gestation	Lactation
Body weight, kg
28 d	8.4	7.9	7.9	7.7	0.53	0.512	0.454
74 d	33.5	30.7	31.6	29.6	1.29	0.273	0.083
116 d	63.5	61.2	59.8	54.8	1.84	0.015	0.065
144 d	88.0	86.0	82.7	75.7	2.15	0.002	0.052
Average daily gain, g
28–144 d	675	663	634	576	15.5	< 0.001	0.037
28–74 d	524	476	494	457
74–116 d	750	760	707	625
116–144 d	816	816	763	712
Average daily feed intake, g
28–144 d	1602	1582	1474	1401	42.0	< 0.001	0.358
28–74 d	799	746	773	747
74–116 d	2004	2033	1854	1770
116–144 d	2386	2381	2120	2005
Gain to feed ratio
28–144 d	0.42	0.42	0.43	0.41	0.006	0.526	0.076
28–74 d	0.66	0.64	0.64	0.61
74–116 d	0.37	0.37	0.38	0.35
116–144 d	0.34	0.34	0.36	0.36

¹Gestation indicates the type of sow from which piglets were born, and lactation type indicates the type of sow which suckled the piglets
³SEM: standard error of the mean
²All variables were analyzed by repeated measures. The model included type of gestating (G) and lactating (L) sow, age of the piglet (A), and their interactions GxL, GxA, LxA, and GxLxA. Age was always significant (P < 0.001), while other interactions were not significant for any variable (P > 0.10) except for body weight. The P values of the interactions (GxA, LxA) for body weight were 0.001 and 0.069, respectively

ISSN: 2055-5660