Effect of fish meal replacement by Azolla meal on growth performance, hemato‐biochemical and serum parameters in the diet of scale carp, Cyprinus carpio var. communis

A 12‐week growth experiment was conducted to evaluate the suitability of Azolla cristata as a fish meal (FM) substitute in diets for Cyprinus carpio var. communis fingerlings. Six iso‐nitrogenous and isocaloric (16.17 kJ/g GE) diets were formulated to contain 42% crude protein and each treatment had...

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Bibliographic Details
Published in:Journal of the World Aquaculture Society 2023-10, Vol.54 (5), p.1301-1316
Main Authors: Ahmed, Imtiaz, Khan, Younis Mohd, Lateef, Anzar, Jan, Kousar, Majeed, Aamir, Shah, Manzoor A.
Format: Article
Language:English
Subjects:
Alanine
Alanine transaminase
aquaculture
Aquatic plants
Aspartate aminotransferase
aspartate transaminase
Azolla
Biomass
blood chemistry
blood serum
carcass composition
carp
Cholesterol
Conversion ratio
crude protein
Cyprinus carpio
Diet
Feed conversion
Feed conversion efficiency
Feed efficiency
Ferns
Fingerlings
Fish
Fish culture
Fish meal
Fishmeal
Food conversion
freshwater fish
Freshwater fishes
Freshwater plants
glucose
growth
growth performance
Growth rate
Intensive aquaculture
liveweight gain
macrophyte
Parameters
protein efficiency ratio
Proteins
Serum
specific growth rate
Transaminases
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Summary:A 12‐week growth experiment was conducted to evaluate the suitability of Azolla cristata as a fish meal (FM) substitute in diets for Cyprinus carpio var. communis fingerlings. Six iso‐nitrogenous and isocaloric (16.17 kJ/g GE) diets were formulated to contain 42% crude protein and each treatment had three replicates. The mean initial weight of the fish was 3.4 ± 0.2 g. Graded levels of A. cristata 0, 10, 20, 30, 40, and 50% in the diets were fed to the fish in triplicate groups, respectively. No significant (p > 0.05) differences in growth performance of fish‐fed diets containing 10% and control (0%) inclusion levels were seen. However, further increase in Azolla meal (AM) supplementation resulted in gradual decline in growth performance of fish in terms of live weight gain, specific growth rate, feed conversion ratio, and protein efficiency ratio. All hematological parameters had a linear declining trend as the proportion of AM in diet was increased. Protein content of fish was found significantly (p 
ISSN:0893-8849
1749-7345
DOI:10.1111/jwas.12995