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Table 3 Multivariable model for mortality including DN/SN, year and parity with random sow effect, during the period 2013–2015 (N = 2,039)

From: The effect of double nursing, an alternative nursing strategy for the hyper-prolific sow herd, on herd performance

Factor

Category

IRR

95% CI

Count

Nursing type

SN

reference

 

1,791

DN

0.66

0.57–0.76

248

Year of weaning

2013

reference

 

638

2014

1.22

1.08 –1.37

784

2015

1.13

1.0 −1.29

617

Parity

2

reference

 

442

3

0.89

0.77 – 1.02

424

4

0.94

0.81–1.09

378

5

0.97

0.83 –1.13

325

6

0.83

0.70 – 0.98

283

7

0.72

0.58–0.88

187

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Porcine Health Management

ISSN: 2055-5660

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