A direct and straightforward method for measurement real maximum fish stomach volume to improve aquaculture feeding research

ABSTRACT: In fish feeding studies, stomach related parameters are mainly measured in order to have biometric relationships. To determine those parameters a direct and straightforward method for measuring real maximum stomach volume in fish based on Archimedes' principle was tested and compared...

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Autores principales:	Salgado-Ismodes,Andrés, Salgado-Leu,Ítalo, Valdebenito,Iván
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2018
Materias:	Archimedes’ principle stomach volume fish feeding Oncorhynchus mykiss
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000500890
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spelling	oai:scielo:S0718-560X20180005008902019-04-03A direct and straightforward method for measurement real maximum fish stomach volume to improve aquaculture feeding researchSalgado-Ismodes,AndrésSalgado-Leu,ÍtaloValdebenito,Iván Archimedes’ principle stomach volume fish feeding Oncorhynchus mykiss ABSTRACT: In fish feeding studies, stomach related parameters are mainly measured in order to have biometric relationships. To determine those parameters a direct and straightforward method for measuring real maximum stomach volume in fish based on Archimedes' principle was tested and compared against a traditional method. The new method is based on the measure of the real maximum stomach volume when fish are fed ad libitum. By contrast, the traditional method measures the forced expanded capacity of the stomach under an arbitrarily assigned hydraulic pressure head of a 50 cm column of water. The two methods were assayed in juvenile rainbow trout Oncorhynchus mykiss, and the results displayed significant different stomach volume and related indices. The best relationships for potential regression were obtained using the Archimedes’ principle method, being between fish weight and stomach volume (R2 = 0.68), and stomach content and stomach volume (R2 = 0.95). These results indicate that the measurement of real maximum stomach volume in fish using the Archimedes’ principle method could be a useful method of estimation of how much stomach can expand; this can be a suitable tool to improve fish feeding research by regulating the amount of feed that can be ingested by animals.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.46 n.5 20182018-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000500890en10.4067/vol46-issue5-fulltext-3
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Archimedes’ principle stomach volume fish feeding Oncorhynchus mykiss
spellingShingle	Archimedes’ principle stomach volume fish feeding Oncorhynchus mykiss Salgado-Ismodes,Andrés Salgado-Leu,Ítalo Valdebenito,Iván A direct and straightforward method for measurement real maximum fish stomach volume to improve aquaculture feeding research
description	ABSTRACT: In fish feeding studies, stomach related parameters are mainly measured in order to have biometric relationships. To determine those parameters a direct and straightforward method for measuring real maximum stomach volume in fish based on Archimedes' principle was tested and compared against a traditional method. The new method is based on the measure of the real maximum stomach volume when fish are fed ad libitum. By contrast, the traditional method measures the forced expanded capacity of the stomach under an arbitrarily assigned hydraulic pressure head of a 50 cm column of water. The two methods were assayed in juvenile rainbow trout Oncorhynchus mykiss, and the results displayed significant different stomach volume and related indices. The best relationships for potential regression were obtained using the Archimedes’ principle method, being between fish weight and stomach volume (R2 = 0.68), and stomach content and stomach volume (R2 = 0.95). These results indicate that the measurement of real maximum stomach volume in fish using the Archimedes’ principle method could be a useful method of estimation of how much stomach can expand; this can be a suitable tool to improve fish feeding research by regulating the amount of feed that can be ingested by animals.
author	Salgado-Ismodes,Andrés Salgado-Leu,Ítalo Valdebenito,Iván
author_facet	Salgado-Ismodes,Andrés Salgado-Leu,Ítalo Valdebenito,Iván
author_sort	Salgado-Ismodes,Andrés
title	A direct and straightforward method for measurement real maximum fish stomach volume to improve aquaculture feeding research
title_short	A direct and straightforward method for measurement real maximum fish stomach volume to improve aquaculture feeding research
title_full	A direct and straightforward method for measurement real maximum fish stomach volume to improve aquaculture feeding research
title_fullStr	A direct and straightforward method for measurement real maximum fish stomach volume to improve aquaculture feeding research
title_full_unstemmed	A direct and straightforward method for measurement real maximum fish stomach volume to improve aquaculture feeding research
title_sort	direct and straightforward method for measurement real maximum fish stomach volume to improve aquaculture feeding research
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000500890
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A direct and straightforward method for measurement real maximum fish stomach volume to improve aquaculture feeding research

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