Table 2 Mean back fat levels at the different time points in the different parity and treatment groups (with P = peforelin, E = eCG, C = control and BF1 = back fat measured one month after insemination; BF2 = back fat measured at farrowing; BF3 = back fat measured at weaning; BF3-BF2 = calculated back fat loss during lactation and SD = standard deviation) in 212 sows in three herds
From: Effect of a GnRH analogue (peforelin) on the litter performance of gilts and sows
Group | n | BF1 ± SD (mm) | BF2 ± SD (mm) | BF3 ± SD (mm) | BF3-BF2 ± SD (mm) | |
|---|---|---|---|---|---|---|
Gilts | P | 28 | 16.5 ± 3.5 | 21.0 ± 4.2 | 17.5 ± 4.2 | −3.3 ± 2.6 |
E | 17 | 17.7 ± 2.1 | 22.9 ± 3.5 | 18.9 ± 2.8 | −3.6 ± 3.2 | |
C | 25 | 17.9 ± 2.5 | 22.3 ± 3.8 | 19.1 ± 3.7 | −3.4 ± 3.4 | |
Primiparous | P | 30 | 19.0 ± 3.3 | 21.9 ± 5.6 | 18.6 ± 4.5 | −4.6 ± 3.3 |
E | 15 | 16.5 ± 3.4 | 20.7 ± 3.1 | 16.5 ± 3.9 | −4.2 ± 2.1 | |
C | 24 | 17.6 ± 3.4 | 20.6 ± 3.3 | 16.7 ± 3.4 | −3.4 ± 3.3 | |
Pluriparous | P | 20 | 16.2 ± 4.1b | 21.2 ± 6.1 | 16.4 ± 3.2 | −4.0 ± 2.9 |
E | 27 | 19.7 ± 4.6a | 24.1 ± 4.7 | 19.1 ± 4.5 | −3.3 ± 4.2 | |
C | 26 | 17.8 ± 3.8a,b | 21.0 ± 4.2 | 17.8 ± 3.6 | −4.3 ± 3.6 | |
All parities | P | 78 | 18.4 ± 3.6 | 22.2 ± 4.5 | 18.1 ± 4.0 | −4.0 ± 3.0 |
E | 59 | 17.5 ± 3.5 | 21.8 ± 4.3 | 18.3 ± 4.0 | −3.4 ± 3.7 | |
C | 75 | 17.2 ± 3.6 | 21.3 ± 4.8 | 17.4 ± 3.7 | −4.0 ± 3.1 |