... vaccines. • Lack of specialist veterinary and extension staff to instruct and advise farmers. • Lack of model demonstration farms in each province to train the trainers. To better understand ... a tiled roof, cross ventilation, 1 0-2 0 sow capacity (and/ or 6 0-1 00 fatteners) and incorporating a Chinese digester for initial processing of effluent before controlled distribution into fish ... their findings in the most recent International Pig Veterinary Society Congress. It will be interesting to determine if the same causes of preweaning diarrhoea in large commercial piggeries in...