Effect of the Natural Herb Amla (Phyllanthus emblica) on Growth, Survival and Disease Resistance in Macrobrachium rosenbergii Juveniles
Effect of the Natural Herb Amla (Phyllanthus emblica) on Growth, Survival and Disease Resistance in Macrobrachium rosenbergii Juveniles
Date
2020
Authors
Mohanan, Salini
Nidhin, B.
Harikrishnan, M.
Prabhakaran, M. P.
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India)
Abstract
Phyllanthus emblica is a natural herb commonly
known as Indian gooseberry or amla, belongs to the
family Euphorbiaceae, found natively in India and
all parts of this plant are used for several medicinal
remedies in Ayurveda. Fruits are highly nutritious
and rich source of vitamin C, amino acids and
minerals and have tremendous pharmacological
applications. In this study three experimental diets
composed of ingredients such as fish meal, rice bran,
Ground Nut Oil Cake (GNOC), wheat flour, vitamin
and mineral mix and different quantities of amla
(P. emblica) powder were fed to juveniles of M.
rosenbergii (PL 16). Three experimental feed T1,T2
and T3 containing amla powder incorporated at the
rate of 0.5 g, 1.0 g and 1.5 g was prepared and feed
mixture without amla was used as control. General
observation to be given here the juveniles fed with
T3 showed maximum growth increment (1.92 ± 0.25
g) than T1 (1.15 ± 0.13 g) and T2 (1.72 ± 0.22 g). The
mean growth increment with respect to length
showed significant variations (p< 0.005) between
treatments. The mean weight of individuals in T2
and T3 groups varied significantly compared to
control. FCR values were found in T1 (1.19),
comparatively better than T2 (1.59), T3 (1.66) and
control (1.91). Whereas SGR values increased from
0.47 to 0.67 from control to T2. The highest
percentage survival was recorded in T2 (100 ± 0)
during study. In the bacterial challenge test against
Aeromonas hydrophila, post larvae fed with T3 (1.5 g
100 g-1) feed showed better survival percentage
Description
Keywords
Amla, scampi, growth