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Journal of Animal Science, Vol 76, Issue 11 2759-2762, Copyright © 1998 by American Society of Animal Science

JOURNAL ARTICLE

The effect of the Hurnik-Morris (HM) system on sow reproduction, attrition, and longevity

J. R. Morris, J. F. Hurnik, R. M. Friendship and N. M. Evans
Ridgetown College, University of Guelph, Ontario, Canada.

Sows were randomly selected and assigned to either the Hurnik-Morris system (HM; n = 59) or a conventional gestation crate system (GC; n = 90) before breeding. The HM system provides housing for sows in small groups. All sows were bred to Duroc x Hampshire commercial boars. A common farrowing barn with 18 farrowing crates was used for the HM and GC sows. The HM sows had less (P<.001) backfat at farrowing. Average parity per sow (P<.046), lifetime number of pigs born per sow (P<.02), lifetime number of pigs born alive per sow (P<.02), and lifetime number weaned per sow (P<.045) were higher for sows housed in the HM system. The total number of sows removed from the GC system was higher (P<.025) than the number leaving the HM system. The higher parity level and lifetime production exhibited by the sows in the HM system indicates that this system supports greater longevity and may reflect the superior effect that this housing system has on animal well-being.


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P. J. Lammers, M. S. Honeyman, J. W. Mabry, and J. D. Harmon
Performance of gestating sows in bedded hoop barns and confinement stalls
J Anim Sci, May 1, 2007; 85(5): 1311 - 1317.
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Copyright © 1998 by the American Society of Animal Science.