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Table 5 Multivariable model for total born piglets in the next farrowing including DN/SN, year and parity with random sow effect, during the period 2013–2016 (N = 2,039)

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

Factor Category Coefficient 95%CI Count
Previous nursing type SN reference   1,791
DN −0.97 −1.39 – −0.53 248
Year of previous weaning 2013 0.31 −0.07 – 0.69 638
2014 0.43 0.11– 0.75 784
2015 reference   617
Previous parity 2 0.11 −0.42– 0.65 442
3 0.56 0.03 –1.09 424
4 0.81 0.28–1.34 378
5 0.71 0.17–1.24 325
6 0.64 0.11–1.18 283
7 reference   187