What to do with salty poo?

‘Recycling’ wastes from most farm animals, including freshwater fish farms is easy. Chicken wastes may need to be composted. Fish wastes from tour garden pond filter can be applied directly to plants. But what about wastes from marine or brackish aquaculture? The salt in it prohibits direct application to plants. This paper attempts to address this issue by finding another use for salty aquaculture wastes.

Aquaculture
Volume 323, Number 1 (December 2011)
Utilization of waste from a marine recirculating fish culture system as a feed source for the polychaete worm, Nereis virens
Authors: Nicholas Brown, Stephen Eddy, Stefanie Plaud
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Source: Aquaculture, Volume 323, Number 1 (December 2011)
Page Numbers: 177 – 183
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Abstract: Two experiments were conducted to test the effect of feeding the polychaete worm Nereis virens with solid wastes collected from a marine recirculating system. In experiment 1, worms with an initial mean weight of 0.37g were fed for 80days with a commercial worm diet (CD), halibut fecal waste (FW), uneaten halibut feed pellets (PW) or a 1:1 mixture of fecal waste and feed pellet waste (MW). The resulting biomass and average weight of harvested worms was significantly higher in the PW group than in the other 3 groups (ANOVA, p<0.05). Total fat levels in the worms from the MW and PW groups were higher than the CD group.
Citation: Nicholas Brown, Stephen Eddy, Stefanie Plaud . Utilization of waste from a marine recirculating fish culture system as a feed source for the polychaete worm, Nereis virens. Aquaculture, Volume 323, Number 1 (December 2011), pp. 177-183,
URL: http://ejournals.ebsco.com/direct.asp?ArticleID=414D860744ED0E336AB3

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