The purpose of this study is to evaluate the effect
of a dietary savory extract supplement on the survival rate, growth
performance, feed conversion ratio and economic efficiency of common carp (Cyprinus carpio L.) reared in a
recirculation system. Thirty-two carps were allotted into two experimental
variants, each of them comprising two replications with 8 fish in a group. The
average initial live weight of fish from both replications from the control
group (CG) and experimental group (EG) was 866.56±113.99 g and 866.81±119.10 g,
respectively (p>0.05). They were kept in concrete tanks with efficient water
volume of 0.8 m3, elements of the recirculation system. Carps were
fed pelleted carp feed with 25% crude protein, produced with pellet size of 6
mm. The feed of fish from the EG was supplemented with 1% powdered savory
extract, after lubricating the pellets with 5 ml sunflower oil per 100 g feed.
Control carp received the same amount of sunflower oil-lubricated feed. The
daily ration of fish from both replications was 1.8% of their live weight. The
experiment duration was 45 days. Survival rates during the experiment showed 100% survival in carps, supplemented with 1% savory extract
as well as in control fish. The average individual weight gain of carps from the two EG replications (supplemented with
1% savory extract) was
154.63±28.39 g, which was higher than that of controls by 57.18% (Table 3), as the
differences were statistically significant (p<0.001). At the end of the trial, the
analysis of consumed feed amount showed that feed conversion ratio in the group
supplemented with 1% savory extract was 2.25±0.43 e.g. by 67.11% lower than
that of control group, as the differences were statistically significant
(p<0.001). The group that received 1% savory extract exhibited better
economic conversion ratio (1.98), by 42.42% lower than that of the
non-supplemented group.
Common carp Savory extract Feed conversion ratio Weight gain Survival rate Economic efficiency
Primary Language | English |
---|---|
Subjects | Hydrobiology |
Journal Section | Articles |
Authors | |
Publication Date | March 12, 2018 |
Submission Date | February 23, 2018 |
Published in Issue | Year 2018Volume: 1 Issue: 3 |
is licensed under a CreativeCommons Attribtion-ShareAlike 4.0 International Licence
Diamond Open Access refers to a scholarly publication model in which journals and platforms do not charge fees to either authors or readers.
Open Access Statement:
This is an open access journal which means that all content is freely available without charge to the user or his/her institution. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles, or use them for any other lawful purpose, without asking prior permission from the publisher or the author. This is in accordance with the BOAI definition of open access.
Archiving Policy:
Archiving is done according to TÜBİTAK ULAKBİM "DergiPark" publication policy (LOCKSS).