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Table 2 Differences between parities with regard to litter size, lactation length, weight, and back fat at farrowing and weaning (Lsmeans ± S.E)

From: Sow performance in multi-suckling pens with different management routines

  1st party sows 2nd parity sows > 2nd parity sows P
Litter size
 Live born 12.4 ± 0.9 12.6 ± 0.7 12.6 ± 0.7 n.s.
 At grouping 10.5 ± 0.7 10.1 ± 0.6 10.0 ± 0.6 n.s.
 At weaning 9.3 ± 0.7 10.0 ± 0.6 9.0 ± 0.5 n.s.
Lactation period (days) 43.5 ± 0.4 43.9 ± 0.4 44.1 ± 0.4 n.s.
Sow weight (kg)
 At farrowing 213.3 ± 7.2a 264.4 ± 6.1b 302.9 ± 6.3c < 0.001
 At weaning 210.9 ± 8.1a 244.3 ± 6.5b 288.7 ± 6.5c < 0.001
Difference − 0.2 ± 6.3a − 20.1 ± 5.0b − 14.4 ± 5.1ab < 0.05
Back fat (mm)
 At farrowing 16.1 ± 1.1a 18.0 ± 1.0a 20.3 ± 1.0b < 0.05
 At weaning 12.6 ± 1.3a 14.8 ± 1.0a 18.5 ± 1.0b < 0.05
Difference − 3.0 ± 1.0 − 3.0 ± 0.8 − 1.8 ± 0.8 n.s.
  1. Different superscripts within rows indicate significant differences
  2. n.s. non-significant (P > 0.05)