Publikationsdatum:
2021-07-15
Beschreibung:
An experiment was carried out to determine the effect of blood and fish meal based diets on the feeding rate of tilapia in concrete tank. Two diets formulated at 35% CP, with blood and fish meal as the test ingredients. The diets were fed to tilapia (25/tank, with average initial weight of 7.61g) at 1, 1.5 and 2.5% biomass, in three replicates, once daily, in a 2:3 factorial design. Result showed that under blood meal based diet, average weight gain, gain in total length, relative weight gain and specific growth rate increased from 1 to 1.5% biomass and reduced at 2.5% ( 10.61, 16.75, 14.51g; 1.84, 3.18, 2.86cm; 147.37, 238.42, 147.42%; and 0.61, 0.85, 0.64 %/day), respectively (p〈0.05). Under fish meal based diet, the same parameters increased as feeding rate increased from 1 to 2.5% biomass ( 8.25, 16.55, 29.09g; 2.38, 2.67, 4.35cm; 125.07, 213.79, 408.63% and 0.52,0.82, 1.10%/day), respectively, (p〈0.05). In conclusion, blood meal based diet at 35%CP requires a feeding rate of 1.5% biomass, while fish meal based diet requires at least 2.5% for tilapia production in concrete tanks.
Beschreibung:
Includes: 3 tables.;Also includes: 14 references.
Schlagwort(e):
Aquaculture
;
Ecology
;
Oreochromis niloticus
;
Nigeria
;
Port Harcourt
;
comparative effect
;
Blood meal
;
Fish meal
;
Diets
;
Growth performance
;
freshwater environment
;
Proteins
;
Feeding experiments
;
Freshwater fish
;
Fish meal
;
Feed
;
Diets
;
Fish culture
;
Culture tanks
;
Feed efficiency
;
Comparative studies
Repository-Name:
AquaDocs
Materialart:
conference_item
,
TRUE
Format:
application/pdf
Format:
application/pdf
Format:
41-44
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