This study tested the hypothesis that sows that were less fearful of humans and novel objects at 8 weeks of age would have better mothering abilities which would result in higher reproductive success. Eight-nine gilts were tested in a human approach test and in a novel object approach test. Of the 89 sows tested, only 30 were bred and their subsequent farrowing productivity was recorded. To determine the effect fear and anxiety would have on gilt productivity the following parameters were monitored at farrowing: the duration of farrowing, time interval between piglets birth, the number of times the sows lied on top of or crushed a piglet while she was farrowing, the number of liveborn, stillborn piglets and piglets deaths after birth until weaning. Increased fear of humans (‘fear’) was associated with longer farrowing durations, larger differences in the time interval between the birth of piglets. As the length of time for a sow to farrow her litter increased, there was an increase in the number of piglet deaths prior to weaning. Gilts that were more fearful of humans also had more stillborn piglets and more piglets die prior to weaning. Fear of a novel object (‘anxiety’) was also associated with a higher number of stillborn piglets. It was concluded that fear of humans in reproductive animals could potentially lead to a decrease in productivity.
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