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Table 5 Analysis of reproductive failures (January 2001-December 2003)

From: Low reproductive performance and high sow mortality in a pig breeding herd: a case study

  Jan-Dec 01 Jan-Dec 02 Jan-Dec 03 Target1
Farrowing rate % 86.0 77.6 76.3 89
Regular returns % 18-24/39-45 days n/a 6.6 8.0 5
Irregular returns % 23-38 days n/a 7.0 5.2 2
Total returns % 8.0 13.6 13.2 7
Sows not in pig % NIP ( > 45 days) n/a 5.6 5.5 1
Abortions % 0.8 1.1 1.5 <1
Culled pregnant % 3.7 0.6 1.6 <1
Dead pregnant % 2.1 1.5 1.7 1
Pigs sold per sow per year 22.5 22.0 20.5 23
  1. 1 Alexander and Muirhead (1997)