First of all, we successfully promoted play in grow-finish pigs.Our results also suggest that play is a positive experience for the pigs because we saw indications in their behavior.They find it rewarding and they are anticipating it in a positive way.
The third thing is that we actually saw a different response in the group with play opportunities when the pigs were challenged with porcine reproductive and respiratory virus PRRS.We saw different immune response which is very interesting.
Our play group during, the infection period, gained more weight, had higher average daily gain.Also, there was less aggression in the play pigs.They experienced less severe respiratory distress which is a usual clinical symptom of the PRRS virus and we also saw some modified immune response between the control and play pigs.
We saw that play pigs had lower white blood cells and also lower monocytes which is one of the target cells of PRRS.We can see some modified immune response in the play pigs and possibly also enhanced disease resilience.
Full details on this work can be accessed swinewelfare.com.
Source : Farmscape.ca