Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

Copyright © Wydawnictwo Akademii Rolniczej we Wroclawiu, ISSN 1505-0297

Woźniak M. , Skibniewska K. , Guziur J. , Zakrzewski J. , Szarek J. 2018. METHODOLOGY TO FISH PRODUCTION EFFICIENCY EVALUATION
DOI:10.30825/5.ejpau.17.2018.21.2, EJPAU 21(2), #01.
Available Online: http://www.ejpau.media.pl/volume21/issue2/abs-01.html

ABSTRACT

Development of aquaculture has resulted in the need to develop a tool to assess fish production efficiency. This study proposes a method using selected attributes which can be changed and adapted in dependence on the purpose of the assessment. The attributes are also provided with an importance level, expressed in percentage terms, due to which an attribute considered by the assessors as more significant can have a stronger impact on the final results. The usefulness of the method was tested on the results obtained for production from six fish farms using three different carp breeding technologies and from six rainbow trout farms carrying out production in flowing or recirculated water. The following attributes were applied: slaughter output, content of protein and fat, fatty acids n-3/n-6 ratio and results of organoleptic analysis. Carp bred by semi-extensive technology, next, the one bred by low-intensive method, gained the best GZS value. Also, dependence of GZS value of carp to the season of netting was confirmed. Presented results did not show influence of different farming system on the GZS value of trout bred with OOH and RAS systems. It has been shown that the method can be a useful tool for selecting the optimal technology of fish production for specified environmental conditions, as well as a supervision or reporting tool for state and non-state institutions.

Key words: fish production assessment, carp, rainbow trout.

---

Małgorzata Woźniak
Department of Fish Biology and Pisciculture, Faculty of Environmental Sciences, University of Warmia & Mazury in Olsztyn, Poland
Phone: +48 89 524 51 25
10-719 Olsztyn
Poland
email: mawoz@uwm.edu.pl

Krystyna A. Skibniewska
Chair of Foundations of Safety, Faculty of Technical Science, University of Warmia & Mazury in Olsztyn, Poland
Phone: +48 89 524 56 11
Heweliusza 10
10-719 Olsztyn
Poland
email: kas@uwm.edu.pl

Janusz Guziur
Department of Fish Biology and Pisciculture, Faculty of Environmental Sciences, University of Warmia & Mazury in Olsztyn, Poland
Phone: +48 89 534 37 62
10-719 Olsztyn
Poland
email: jguziur@uwm.edu.pl

Janusz Zakrzewski
Faculty of Technical Science, University of Warmia & Mazury in Olsztyn, Poland
†

Jozef Szarek
Chair of Pathophysiology, Forensic Veterinary Medicine & Administration, Faculty of Veterinary Medicine, University of Warmia & Mazury in Olsztyn, Poland
Phone: +48 89 523 32 52
Oczapowskiego 13
10-718 Olsztyn
Poland
email: szarek@uwm.edu.pl

---

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.

---

Main  -  Issues  -  How to Submit  -  From the Publisher  -  Search  -  Subscription