Publication Date:
2021-07-01
Description:
An experiment was conducted to evaluate the possibility of using inorganic fertilizertriple super phosphate (TSP), inorganic fertilizer 16:20 (a 16:20 grade fertilizer contains16 percent N and 20 percent P20 5), rice-bran and duck-manure as phosphorus sources informulated fish feed for Nile tilapia ( Oreochromis niloticus). Experiment was conductedfor a period of 2 months in net-cages suspended in fertilized earthen ponds and all malesex-reversed Nile tilapia (9.39- 10.37 g) were used in the experiment. Seven treatmentsincluding one non-feed treatment were used in this experiment. Treatment 1 (non-feed),treatment 2 (-P) where fish fed with phosphorus non-supplemented diet acted as control1 and treatment 3, 4, 5, 6 and 7 where fish fed with 3% di-calcium phosphate (DCP), 3%triple supper phosphate (TSP), 7% 16:20 inorganic fertilizer, 30% rice-bran and 30%duck-manure supplemented diet, respectively. Results showed that the TSP and 16:20grade inorganic fertilizer supplementation in diets as phosphorus sources wereequivalent to DCP (Di-calcium phosphate) supplementation in terms of growthperformance, feed utilization efficiency and final body composition of Nile tilapia. Ricebranand duck-manure were not found as good phosphorus sources.
Keywords:
Aquaculture
;
Fisheries
;
Phosphorus
;
Di-calcium phosphate
;
Triple super phosphate
;
Duck-manure
Repository Name:
AquaDocs
Type:
article
Format:
application/pdf
Format:
application/pdf
Format:
149-158
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