2.1 Experimental design
The study was based on Completely Randomsied
Design (CRD) replicated three times. The treatments
(Table 1) include loading three different mix ratios of
3:1:2, 2:2:2 and 1:3:2 of poutry wastes and cow dung
respectively diluted with the same amount of water.
225 g of poultry waste and 75 g of cow dung were mixed
with 150 mL of water and loaded into Digester A. 150 g
of poultry wastes and 150 g of cow dung were mixed
with 150 mL of water and loaded into Digester B.
Finally, 75 g of poultry wastes and 225 g of cow dung
were mixed with 150 mL of water and loaded into
Digester C. Each treatment was replicated three times.
Nine different digersters of the same design and size were
used in the study.