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

12.4 ± 0.9

12.6 ± 0.7

12.6 ± 0.7

10.5 ± 0.7

10.1 ± 0.6

10.0 ± 0.6

9.3 ± 0.7

10.0 ± 0.6

9.0 ± 0.5

43.5 ± 0.4

43.9 ± 0.4

44.1 ± 0.4

213.3 ± 7.2^a

264.4 ± 6.1^b

302.9 ± 6.3^c

210.9 ± 8.1^a

244.3 ± 6.5^b

288.7 ± 6.5^c

− 0.2 ± 6.3^a

− 20.1 ± 5.0^b

− 14.4 ± 5.1^ab

16.1 ± 1.1^a

18.0 ± 1.0^a

20.3 ± 1.0^b

12.6 ± 1.3^a

14.8 ± 1.0^a

18.5 ± 1.0^b

− 3.0 ± 1.0

− 3.0 ± 0.8

− 1.8 ± 0.8