A Review on the Use of Azolla Meal as a Feed Ingredient in Aquatic Animals’ Diets

Table 5

Showcases the growth performance of two fish species, carp (Cyprinus carpio var. communis) and thai silver barb (Barbonymus gonionotus), when fed with diets containing varying levels of Azolla meal.

Azolla diet (%)	Initial weight (g)	Final weight (g)	Survival (%)	Specific growth rate (%/day)	Feed conversion ratio	Protein efficiency ratio
Carp (Cyprinus carpio var. communis)
Diet1 (0)	3.51 ± 0.07	12.98 ± 0.41^a	100	1.16 ± 0.07^a	1.91 ± 0.75^d	1.50 ± 0.08^b
Diet2 (10)	3.45 ± 0.06	12.48 ± 0.52^a	100	1.15 ± 0.05^a	1.75 ± 0.48^e	1.63 ± 0.06^a
Diet3 (20)	3.45 ± 0.06	11.55 ± 0.56^b	100	1.07 ± 0.03^b	1.98 ± 0.39^d	1.44 ± 0.07^c
Diet4 (30)	3.45 ± 0.06	10.64 ± 0.48^c	94	0.99 ± 0.04^b	2.40 ± 0.37^c	1.19 ± 0.09^d
Diet5 (40)	3.45 ± 0.06	9.64 ± 0.63^d	92	0.91 ± 0.06^bc	2.60 ± 0.29^b	1.09 ± 0.05^e
Diet6 (50)	3.45 ± 0.06	9.06 ± 0.47^d	91	0.87 ± 0.07^c	2.70 ± 0.36^a	1.05 ± 0.07^e
Thai silver barb (Barbonymus gonionotus)
Diet1 (0)	3.90 ± 0.13	30.93 ± 0.4^a	99.33 ± 1.15^a	3.70 ± 0.14^a	0.88 ± 0.09^a	2.98 ± 0.03^a
Diet2 (25)	3.90 ± 0.11	30.68 ± 0.4^a	98.67 ± 1^a	3.68 ± 0.16^a	0.93 ± 0.17^a	2.94 ± 0.02^a
Diet3 (50)	3.90 ± 0.29	24.55 ± 0.45^b	99.33 ± 0.58^a	3.28 ± 0.11^b	1.15 ± 0.12^b	2.26 ± 0.08^b
Diet4 (75)	3.90 ± 0.09	19.81 ± 0.25^c	98 ± 1^a	2.90 ± 0.08^c	1.66 ± 0.15^c	1.75 ± 0.07^c
Diet5 (100)	3.90 ± 0.08	15.20 ± 0.39^d	99.33 ± 0.58^a	2.43 ± 0.18^d	2.64 ± 0.06^d	1.24 ± 0.02^d

Source: Ahmed et al. [72] and Das et al. [53]. The significant differences between the control treatment group and the fish supplemented with Azolla meal are illustrated by a, b, c, d, e, and bc.