Publication Date:
2021-07-15
Description:
Mudcatfish (Heterobranchus longifilis) juveniles (body weight 61.60-83.05g, length 204.43 ~c 3.07 - 229.53 ~c 3.65mm) were fed with diet containing crude protein (CP) levels of 30%,35% and 40% for 10 weeks, using fishmeal as a protein source. Growth performance and feed utilization were investigated. Fish were raised in plastic aquaria of dimension 46 x 38 x 28cm3 at a temperature range of 26.0-29.0~'C, pH value of 6.6-7.4 and dissolved oxygen of 3.5-5.1 mg/1. The highest increase in body weight (23.30 ~c 4.30g) and specific growth rate (0.68 ~c 0.02% day-1) were achieved with Diet 2 (35%CP). The condition factor ranged 0.60 ~c 0.009- 0.66 ~c 0.005 and fish survival was 100% for all diets. Protein efficiency ratio (2.37 ~c 0.35) was also significantly better with 35% CP (p〈0.001). Diets 1(30% CP) and 2 (40% CP) gave lower performances. The observations in this study suggest that a 35% high quality protein diet will probably provide the needed protein requirement for H.longifilis juveniles.
Description:
Includes: 3 tables.;Also includes: 13 references.
Keywords:
Aquaculture
;
Ecology
;
Heterobranchus longifilis
;
Nigeria
;
Bayelsa
;
Heterobranchus longifilis
;
juveniles
;
Protein
;
Feed utilization
;
freshwater environment
;
Growth rate
;
Feed
;
Utilization
;
Freshwater fish
;
Juveniles
;
Diets
;
Proteins
;
Fish meal
;
Condition factor
;
Survival
;
Feeding experiments
;
Fish culture
Repository Name:
AquaDocs
Type:
conference_item
,
TRUE
Format:
application/pdf
Format:
application/pdf
Format:
80-82
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