Published online by Cambridge University Press: 02 September 2010
The rearing and economic results from normal weaning systems are highly variable; this is also true for early weaning, not only because it is a new system, but because thesystem depends more upon the farmer and much less upon the sow. Farmers like early weaning particularly because of its labour-saving aspects. In the first part of the paper I shall give a survey of the causes of differences in rearing results we have obtained from different farms and rearing centres. The second part will examine what is currently the major problem of early weaning systems, the subsequent reproductive performance of the sow.