Synergetic Effects of Nettle (Urtica parvifora roxb) Powder with Multienzyme on Growth Performance of Rainbow Trout (Onchorhynuss mykiss, wallabaum, 1792)
Date
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Department of Zoology
Abstract
The use of medicinal plants such as nettle can be safer, less toxic and ensure biosecurity
in comparison to the chemical products. But plant or its products can contain antinutritional
factors
which
limit
nutrition
digestibility
and
fish
growth.
Thus,
exogenous
multienzymes
were
added
on
aquafeed
to
decrease
anti-nutritional
factors
and
ensure
availability
of
digestible
nutrients.
So,
this
study
was
conducted
to
evaluate
the
use
of
nettle
powder as feed additive along with multienzyme on growth performance and
survival rate of rainbow trout. Five isonitrogenous diet (35% CP) i.e., Control diet with
0.05 gm/kg multienzyme, control diet without multienzyme, diet with 1.5% nettle
powder and 0.05 gm/kg multienzyme; diet with 3% nettle powder and 0.05 gm/kg
multienzyme and diet with 5% nettle powder and 0.05 gm/kg multienzyme were
formulated. The nettle supplementation enhanced fish growth over the control diet; the
highest fish growth and better feed utilization was obtained when fish fed on a diet
containing diet with 1.5 % nettle powder. There were no significant changes in fish
survival among the different treatments and its range was 98.4–100% suggesting that
nettle had no toxic effect.