Nano-Oregano Essential Oil Improves Rainbow Trout’s (<i>Oncorhynchus mykiss</i>) Growth Performance, Oxidative Status, Fatty Acid Profile of Fillet, Affects Gene Expression and Supports Skin and Intestinal Histomorphometry-Reference-Cited by-同舟云学术

Nano-Oregano Essential Oil Improves Rainbow Trout’s (Oncorhynchus mykiss) Growth Performance, Oxidative Status, Fatty Acid Profile of Fillet, Affects Gene Expression and Supports Skin and Intestinal Histomorphometry

Published:2023-11-01 Issue:4 Volume:23 Page:1177-1189
ISSN:2300-8733
Container-title:Annals of Animal Science
language:en
Short-container-title:

Author:

Dokou Stella¹,Bitchava Konstantina²,Stylianaki Ioanna³,Chantzi Paraskevi¹,Efstathiou Antonia⁴,Vasilopoulou Konstantina¹,Tsoumani Maria⁵,Gouva Evangelia⁶,Michailidis Georgios⁷,Prafulla Kumar⁸,Karagouni Evdokia⁴,Giannenas Ilias¹

Affiliation:

1. 1 Laboratory of Nutrition, Faculty of Veterinary Medicine , Aristotle University of Thessaloniki , Thessaloniki , Greece

2. 2 Laboratory of Hydrobiology, School of Animal Biosciences , Agricultural University of Athens , 75 Iera Odos, 118 55 Athens , Greece

3. 3 Laboratory of Pathology, Faculty of Veterinary Medicine , Aristotle University of Thessaloniki , Thessaloniki , Greece

4. 4 Immunology of Infection Group, Department of Microbiology , Hellenic Pasteur Institute , Vas. Sofias Av. 127 , , Athens , Greece

5. 5 Hydrobiological Station of Ioannina, Directorate of Aquaculture, General Directorate of Fisheries, Ministry of Rural Development and Food , , Ioannina , Greece

6. 6 Laboratory of Animal Health, Food Hygiene and Quality, Department of Agriculture, School of Agriculture , University of Ioannina , Kostakioi Artas, 47100, Arta , Greece

7. 7 School of Agriculture, Department of Animal Production , Aristotle University of Thessaloniki , , Thessaloniki , Greece

8. 8 Vets Plus Inc ., 302 Cedar Falls Rd., Menomonie, WI 54751 , USA

Abstract

Abstract The present study was conducted to investigate the effects of a microencapsulated oregano feed additive containing oregano essential oil named “VISNAT 1” on growth performance, intestinal and skin histomorphometry, serum biochemical parameters, fillet oxidative status and fatty acids (FA) profile of rainbow trout (Oncorhynchus mykiss) under conventional farming conditions. Also, changes in the expression levels of both insulin-like growth factor-1 (IGF-1) and growth hormone 1 (GH-1) genes were assessed. A total of 200 sub-adult trouts (52 g±3.2) were randomly allocated into two different treatments with four replicates each. The control group was fed a basal diet, while oregano group was fed diet supplemented with oregano essential oil at the level of 1.0 kg/t of feed. The results indicate that the phytobiotic product beneficially altered feed, fillet and serum oxidative status and improved performance of trouts. Also, oregano essential oil beneficially affected the histopathology and histomorphometry of intestine and skin. Moreover, oregano oil addition in the rainbow trout diet can initiate mitogenic and anti-apoptotic responses in the liver, which is one of the main actions of IGF-1 receptor promoting body growth and health. As a result, oregano essential oil can be used as a supplement on trouts diet but further investigation upon its action should take place.

Publisher

Walter de Gruyter GmbH

Link

https://www.sciendo.com/pdf/10.2478/aoas-2023-0032

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