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Croatian Journal of Fisheries : Ribarstvo, Vol. 80 No. 4, 2022.

Original scientific paper

https://doi.org/10.2478/cjf-2022-0020

LIPID AND PROTEIN CONTENT IN RAINBOW TROUT IN RELATION TO GONADAL GROWTH

Rayees Ahmad Bhat ; Department of Zoology, Kurukshetra University, Kurukshetra, India
Concetta Saoca ; Department of Veterinary Sciences, University of Messina, Via Palatucci snc, Messina, Italy
Francesca Arfuso ; Department of Veterinary Sciences, University of Messina, Via Palatucci snc, Messina, Italy
Carmelo Pino ; Biologist practitioner, Diagnostica dei Verdi, Messina, Italy
Enrico D’Alessandro ; Department of Veterinary Sciences, University of Messina, Via Palatucci snc, Messina, Italy
Alessandro Zumbo ; Department of Veterinary Sciences, University of Messina, Via Palatucci snc, Messina, Italy
Francesco Fazio ; Department of Veterinary Sciences, University of Messina, Via Palatucci snc, Messina, Italy
Osman Sabri Kesbiç ; Department of Animal Nutrition and Nutritional Diseases, Veterinary Faculty, University of Kastamonu, 37150, Kastamonu, Turkey

Full text: croatian pdf 1.082 Kb

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Abstract

The purpose of this study was to examine various lipid classes as well as the protein content in rainbow trout ovaries. A total of 80 samples of Oncorhynchus mykiss (Walbaum 1792) were collected from Kokernag and Verinag hatcheries (Jammu and Kashmir, India) between 2017 and 2019. The mature stage in female fish had the highest gonadosomatic index (GSI) and minimal GSI in the spent stage. Higher lipid content of the ovary was reported during the mature stage (36%), as compared to other pre-breeding stages. Similarly, lipid classes also showed fluctuation during the development of the ovary. The lipid classes, i.e. glycolipids, free fatty acids, cholesterol and triglycerides, had a higher content in the mature stage, while the phospholipid content was higher in the mature stage. The protein content was also higher in the mature ovary than in the other developmental stages. The study provides reference values for various biochemical parameters in rainbow trout that could be useful for population monitoring programs and for the development of diets and management methods for fish production under controlled conditions.

Keywords

Rainbow trout; lipid; fish ovaries; glycolipids; breeding season; proteins

Hrčak ID:

287200

URI

https://hrcak.srce.hr/287200

Publication date:

14.12.2022.

Article data in other languages: croatian

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