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Table 4 Reproductive parameters (mean ± SD) in PCV2 vaccinated (V) and non-vaccinated (NV) sows during both cycles

From: Exploratory field study on the effect of Porcine circovirus 2 (PCV2) sow vaccination on serological, virological and reproductive parameters in a PCV2 subclinically infected sow herd

  First gestational cycle Second gestational cycle
V (n = 94) NV (n = 97) V (n = 75) NV (n = 75)
Interval between expected and real farrowing date (days) 0.45 ± 2.07a 0.73 ± 1.36a 0.72 ± 1.57a 1.00 ± 1.33a
Live-born*/litter 14.34 ± 3.24a 13.61 ± 3.12a 15.42 ± 3.43a 14.16 ± 3.45b
Crushed/litter 0.53 ± 0.84a 0.43 ± 0.66a 0.95 ± 1.16a 0.73 ± 1.13a
Mummified/litter 0.35 ± 0.62a 0.44 ± 0.87a 0.38 ± 0.70a 0.47 ± 0.74a
Stillborn/litter 1.45 ± 1.72a 0.88 ± 1.36b 0.88 ± 1.05a 1.24 ± 1.35a
Weaned/litter 12.35 ± 2.89a 12.06 ± 2.71a 12.82 ± 2.75a 12.01 ± 3.31a
Vitality index (%)**-U
1 (positive score) 91.91a 79.87b 97.14a 89.35a
Vitality index (%)**-NCC
≥ 1 (positive score) 23.40a 10.69b 22.86a 10.19b
Weaning to fertile mating interval (days) 4.51 ± 2.53a 4.49 ± 2.67a NA NA
Abortion (%) 0a 1.0a 1.3a 0a
  1. Different letters in superscript mean statistically significant differences (p < 0.05) among experimental groups within each reproductive cycle
  2. NA: not available
  3. *including crushed piglets at birth
  4. **This index was calculated only from piglets of three or less hours of life