study,
is poultry manures but the supply of these substrates can be
a problem at times. Cow dung users can have a continuous
supply of substrate from animals on a daily basis. This is
one reason that the use of cow dung can be recommended
for the long term use. For large farms where there is
continuous process of rearing poultry, biogas production by
this method would be the best as continuous organic
loading of reactors would make available adequate biogas
for lighting, cooking and other uses.