i had 3 litter sisters years ago that killed 2 litters each, 6 litters in 2 years, to say i was gutted was an understatement, then the guy who gave me the jills told me they was hand reared, i dont knowif that made a diffrence, but iv bred umpteen litters before an after them 2 unlucky years and never had any other probs really, put it down to experience buy some kitts in an get on with it pal, i nearly drove meself round bend asking what if, or if only... atb