Table 2 shows the overall chemical results of the 75 samples.
The average nitrogen content is 2.84 g per 100 g, and the average
fat content is 2.91 g per 100 g. The chemical results of the 3 labs
were compared in Table 3, and no signicant differences were
found for any of the analyses. In terms of the nitrogen and fat
content, there was a signicant difference between the Pangasius
sh supplied from the Tan Thanh farm (north of Cao
Lanh) and those supplied by Agish, from both the An Giang
and Dong Thap regions, presumably because of differences in
feeding regimes. The results were combined to give an overall
mean.