Mr Li,

In your response to John Harris, you wrote:
>Pig manure as input of digester came from a pig sty, in which
>pigs were fed with the mixture of bran and treated chicken
>manure (30-60%).

The Guquan village case study is therefore a comparison of the use of
digested pig slurry and chicken manure. Though independently, each pond
experiment may yield data on the yield of fish, I do not consider that the
data useful for comparison of the two ponds for the following reasons
(a) the type of inputs are different (i.e. one is pig manure and the other
is chicken manure+grass)
and secondly
(b) the pond size/depth are different

I wish to put these final questions to you on the Guquan village
experiments.
In the manure fed pond (3,260 m2 size)
(1a) how much fish fingerlings (total weight) was put into the pond ?
(1b) how much fish was harvested (total weight)
(1c) how much feed (chicken manure, grass, etc) was put into it ?

In the slurry fed pond (913 m2)
(2a) how much fish fingerlings (total weight) was put into the pond ?
(2b) how much fish was harvested (total weight)
(2c) how much slurry was put into it ?

Can you please explain what Table 1 is trying to show and please elaborate
the meaning of the column titles ? The numbers dont add up correctly too ?

regards
jacky foo