Original Scientific Article
The effect of diet supplemented with Dandelion’s (Taraxacum officinale) extract on the productive and blood parameters of common carp (Cyprinus carpio I.) cultivated in the recirculation system
Ivaylo Sirakov*,
Katya Velichkova,
Stefka Stoyanova,
Georgi Zhelyazkov,
Yordan Staykov

Mac Vet Rev 2019; 42 (2): 131 - 139


Received: 28 October 2018

Received in revised form: 09 April 2019

Accepted: 14 May 2019

Available Online First: 09 June 2019

Published on: 15 October 2019

Correspondence: Ivaylo Sirakov, ivailo_sir@abv.bg


The aim of the current study was to test the effect of a diet supplemented with dandelion’s (Taraxacum officinale) extract on the productive traits and blood parameters in common carp (Cyprinus carpio L.) cultivated in an recirculation aquaculture system. The carps were cultivated at a stocking density of 7.2 kg/m3 in recirculation aquaculture system. The fish were split into the following two experimental groups: DF (the fish were fed with feed supplemented with dandelion’s extract) and CF (the fish were fed with feed without supplementation). Common carp fed with a diet added with dandelion’s extract at a quantity of 0.8% from daily feed ratio, did not affect the hydrochemical parameters (pH, dissolved oxygen, and electrical conductivity). The carps fed with feed supplemented with dandelion’s extract did not show better productive traits compared with these found for carp from the control variant. The carp from experimental groups had a higher survival rate, final weight, average individual weight gain and specific growth rate (SGR), respectively with 13.2%, 3.94%, 31.5% and 31.3%, compared with the average values of these parameters measured in individuals fed with the control feed, but the differences were not statistically significant (P≥0.05). Supplementation of feed with dandelion’s extract significantly decreased the plasma cholesterol (4.76%) and triglyceride (61.2%) content, promoting hypolipidemic status in fish (P≤0.05).

Keywords: Dandelion’s extract, common carp, growth, blood parameters, RAS


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© 2019 Sirakov I. This is an open-access article publishedunder the terms of the Creative Commons Attribution License whichpermits unrestricted use, distribution, and reproduction in any medium,provided the original author and source are credited.

Conflict of Interest Statement

The authors declared that they have no potential conflict of interest with respect to the authorship and/or publication of this article.

Citation Information

Macedonian Veterinary Review. Volume 42, Issue 2, Pages 131-139, e-ISSN 1857-7415, p-ISSN 1409-7621, DOI: 10.2478/macvetrev-2019-0017, 2019