Behavioral Observation Procedures and Tests to Characterize the Suitability of Sows for Loose-Housed Farrowing Systems.

The objective of the study was to evaluate behavioral observation procedures and tests to characterize sows' behavior for their suitability for free farrowing systems. Nest building activity (NB), lying-down behavior (LDB), and position after lying down (PLD) were assessed. Four tests were designed to characterize the reaction of sows to a novel object and an unexpected situation (Towel Test, TT), behavior towards humans (Dummy Arm Test, DAT; Trough Cleaning Test, TCT), and behavior towards piglets (Reunion Test, RT).

[Management of large litters in piglet production].

In recent years, the number of live-born piglets per litter has increased tremendously. Litters of 15 or even up to 20 piglets are no longer uncommon. Due to this increased fertility, the demands placed on the sows rise as they are expected to rear a large number of healthy and vital piglets until weaning.