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The behavioral time budgets of the sows were recorded throughout the experiment; lesion and lameness scores were collected prior to mixing and at the end of the experiment. Data were analyzed as repeated measures mixed models with post hoc Tukey tests.
The pattern of behaviors performed in the stall versus group area was different for mat and concrete treatments (REML: F2,56 = 12.98; P < 0.001). Tukey tests revealed that only resting behaviors were affected. We then examined resting behavior in detail. Time spent in different resting postures (sternal versus lateral lying) differed between treatments (REML: F1,30 = 4.92; P = 0.03), where sows on mats spent more time lying laterally (P < 0.05) and performed more of their lying behavior in the stalls (GLM: F1,22 = 14.88; P = 0.001) compared to sows on concrete. Additionally, sows stood up and laid down more frequently (GLM: F1,30 = 13.53; P = 0.001) than sows on concrete. Warm temperatures reduced resting behavior in the stalls (REML: F2,56 = 8.75; P < 0.001). Sows in matted pens had a lower total lesion score at the end of the experiment in comparison to sows in concrete pens (REML: F1,30 = 5.03; P = 0.03). Lameness scores did not differ between treatments.
These results imply that the provision of alternative comfort flooring may provide welfare benefits to breeding sows, though environmental temperature needs to be considered when providing rubber mats.
Monica R.P. Elmore, Joseph P. Garner, Anna K. Johnson, Brian T. Richert and Edmond A. Pajor. A flooring comparison: The impact of rubber mats on the health, behavior, and welfare of group-housed sows at breeding. Applied Animal Behaviour Science. 2010. Vol. 123 (1-2):7-15.
