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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