When taken together, the two types of FCRs paint an interesting
picture. The CEENE FCR is about 14 times higher than the standard
FCR because the cumulative exergy consumption of the feed pellets
is taken into account. This also illustrates the environmental performance
of the feed supply chain. One essential way to improve
the environmental performance of Pangasius aquaculture would be
to help farm managers include life cycle thinking when choosing
their feed suppliers. Not only the nutritional quality of the feed
should be important, but also the origin and the environmental performance of the production of the feed ingredients should be a
selection factor. The higher the resource consumption throughout
the feed production chain, the higher the CEENE FCR. The lower the
nutritional quality of the feed, the higher the CEENE FCR. For each
0.1 kg/kg reduction in FCR of the company’s farms, an environmental
performance gain of about 5% in terms of CEENE could be
achieved. Naturally, there is a biological limit of the potential FCR
reduction. Although, another interesting path to reduce the FCR can
be sought in minimizing the amount of uneaten feed. Quantification
of that amount would be interesting for optimising feed intake
efficiency.