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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
  1. a, b: Within a specific parity group, differences among treatment groups were statistically significant (p ≤ 0.05)