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Table 5 Comparisons of farrowing rates (%) between the three sow groups in subsequent parities1

From: High-performing farms exploit reproductive potential of high and low prolific sows better than low-performing farms

  

Subsequent parity

0

1

2

3

4

5

6

Sow groups2

N3

Mean (± SE), %

High prolific sows

11,152

87.9 (0.45)bv

84.3 (0.54)ay

87.3 (0.49)avw

86.7 (0.52)vwx

86.0 (0.57)wxy

84.8 (0.63)xy

83.3 (0.75)y

Intermediate prolific sows

63,824

89.2 (0.31)av

83.5 (0.43)az

87.0 (0.36)aw

86.6 (0.37)wx

86.2 (0.39)x

85.7 (0.41)xy

84.9 (0.45)y

Low prolific sows

10,120

87.4 (0.46)bv

80.8 (0.62)bx

84.6 (0.56)bw

85.6 (0.57)vw

86.1 (0.59)vw

85.6 (0.66)vw

85.3 (0.78)vw

  1. a, bDifferent superscripts within a column represent significant differences in means (P <  0.01)
  2. v-zDifferent superscripts within a row represent significant differences in means (P <  0.01)
  3. 1Means and SE were estimated by mixed models
  4. 2Groups based on the upper and lower 10th percentiles of piglets born alive in parity 1: High (15 piglets or more); Intermediate (8 to 14 piglets); Low (7 piglets or fewer) prolific sows
  5. 3N represents the initial number of sows
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Porcine Health Management

ISSN: 2055-5660

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