Effect of a GnRH analogue (peforelin) on the litter performance of gilts and sows

Table 4 Mean birth weight ± standard deviation (BW ± SD, in kg) and coefficient of variation (CV) based on the sum of live born and stillborn piglets (LB + SB) and based on LB piglets only, and mortality rate (MR) according to treatment (P = peforelin, E = eCG, C = control) and parity of 3014 piglets (2688 LB) in 212 litters in three herds

Parity	Group	n	Weight				MR (%)
			BW_LB + SB		BW_LB
			Mean ± SD	CV	Mean ± SD	CV
Gilts	P	28	1.33^a ± 0.37	0.19	1.36^a ± 0.34	0.22	9
	E	17	1.23^b ± 0.31	0.22	1.26^b ± 0.30	0.22	13
	C	25	1.29^a,b ± 0.34	0.21	1.32^a,b ± 0.32	0.21	12
Primiparous	P	30	1.42 ± 0.41	0.25	1.47 ± 0.39	0.22	12
	E	15	1.37 ± 0.36	0.27	1.40 ± 0.35	0.25	13
	C	24	1.42 ± 0.40	0.25	1.45 ± 0.37	0.23	12
Pluriparous	P	20	1.36 ± 0.43	0.25	1.41 ± 0.40	0.26	15
	E	27	1.34 ± 0.39	0.26	1.38 ± 0.36	0.23	16
	C	26	1.38 ± 0.48	0.25	1.43 ± 0.46	0.23	12
All parities	P	78	1.37^a ± 0.40	0.22	1.42^a ± 0.38	0.23	12
	E	59	1.31^b ± 0.36	0.25	1.35^b ± 0.35	0.23	14
	C	75	1.36^a ± 0.41	0.23	1.40^a ± 0.39	0.22	12

^{a, b} Within a specific parity group, differences among treatment groups were statistically significant (p ≤ 0.05)

ISSN: 2055-5660