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Nutrient flows in an integrated pig, maggot and fish production system
Author(s) -
Nuov S,
Little D C,
Yakupitiyage A
Publication year - 1995
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.1995.tb00950.x
Subject(s) - catfish , biology , clarias gariepinus , oreochromis , nile tilapia , fish farming , stocking , nutrient , lucilia , aquaculture , fishery , aquaponics , commercial fish feed , larva , zoology , fish <actinopterygii> , ecology , calliphoridae
Direct use of pig wastes as inputs into fish culture systems may be unacceptable or an inferior use of valuable inputs. High value, but non‐filter feeding fish, such as African catfish, Clarias gariepinus (Burchell), may be unable to recover nutrients efficiently through the pond food web and require complete diets in intensive culture. Live feeds such as the larval stage of the green blow fly. Lucilia sericata , can be used as intermediate organisms to utilize pig waste and subsequently be fed live as part of a complete ration for catfish raised in cages. The nutrient efficiency of the system is further enhanced by the stocking of phytophagous fish, the Nile tilapia, Oreochromis niloticus (L.), in the pond in which the catfish culture cages are suspended. A model derived from on‐farm experimentation is presented that demonstrates system design and nutrient efficiencies. An extrapolated catfish production of 61 year 1 using only fly larvae produced from a standing herd of approximately 1000 fattening pigs was demonstrated. The static water pond in which the catfish were cultured ensured that the environmental impact of both pig and catfish systems was minimal compared to conventional production systems.