Compelling palatability of protein hydrolysates for Nile tilapia juveniles

ABSTRACT This study aimed at determining the compelling palatability of different protein hydrolysates for Nile tilapia juveniles (Oreochromis niloticus). Four isoproteic (30% crude protein) and isoenergetic (3,200 kcal kg−1) experimental diets were formulated, with a 5% inclusion level of...

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Autores principales:	Sanches-Alves,Denis Rogério, Silva,Thibério Carvalho da, Rocha,Joana D'arc Maurício, Oliveira,Suzana Raquel de, Señor,Altevir, Boscolo,Wilson Rogério
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2019
Materias:	Oreochromis niloticus feed attractant palatability agent nutrition behavior aquaculture
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000200371
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spelling	oai:scielo:S0718-560X20190002003712019-06-04Compelling palatability of protein hydrolysates for Nile tilapia juvenilesSanches-Alves,Denis RogérioSilva,Thibério Carvalho daRocha,Joana D'arc MaurícioOliveira,Suzana Raquel deSeñor,AltevirBoscolo,Wilson Rogério Oreochromis niloticus feed attractant palatability agent nutrition behavior aquaculture ABSTRACT This study aimed at determining the compelling palatability of different protein hydrolysates for Nile tilapia juveniles (Oreochromis niloticus). Four isoproteic (30% crude protein) and isoenergetic (3,200 kcal kg−1) experimental diets were formulated, with a 5% inclusion level of poultry hydrolysate protein (PHF), or swine liver hydrolysate protein (PHS), or feather hydrolysate protein (PHP) and a control treatment containing 5% of fishmeal (FPE). Four juveniles (2.9 ± 0.01 g) were distributed in 10 L tanks and fed four times a day, and before each feeding event, diets were drawn. The same amount of pellets from each diet was offered, and feeding behaviors were recorded during three minutes for each feeding event, referred to the time of capture of the first pellet, number of pellet rejections, and number of approximations without capturing pellets and quantity of consumed pellets. A significant effect (P < 0.05) was observed regarding a higher consumption of pellets and palatability index for PHF, followed by PHS, FPE, and PHP. Therefore, it was concluded that PHF provided the highest compelling palatability for Nile tilapia juveniles, by displaying a 10.82% increase of the palatability index, 17% of final feed consumption, and presented a rejection number 6.89 times lower than FPE.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.47 n.2 20192019-05-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000200371en10.3856/vol47-issue2-fulltext-19
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Oreochromis niloticus feed attractant palatability agent nutrition behavior aquaculture
spellingShingle	Oreochromis niloticus feed attractant palatability agent nutrition behavior aquaculture Sanches-Alves,Denis Rogério Silva,Thibério Carvalho da Rocha,Joana D'arc Maurício Oliveira,Suzana Raquel de Señor,Altevir Boscolo,Wilson Rogério Compelling palatability of protein hydrolysates for Nile tilapia juveniles
description	ABSTRACT This study aimed at determining the compelling palatability of different protein hydrolysates for Nile tilapia juveniles (Oreochromis niloticus). Four isoproteic (30% crude protein) and isoenergetic (3,200 kcal kg−1) experimental diets were formulated, with a 5% inclusion level of poultry hydrolysate protein (PHF), or swine liver hydrolysate protein (PHS), or feather hydrolysate protein (PHP) and a control treatment containing 5% of fishmeal (FPE). Four juveniles (2.9 ± 0.01 g) were distributed in 10 L tanks and fed four times a day, and before each feeding event, diets were drawn. The same amount of pellets from each diet was offered, and feeding behaviors were recorded during three minutes for each feeding event, referred to the time of capture of the first pellet, number of pellet rejections, and number of approximations without capturing pellets and quantity of consumed pellets. A significant effect (P < 0.05) was observed regarding a higher consumption of pellets and palatability index for PHF, followed by PHS, FPE, and PHP. Therefore, it was concluded that PHF provided the highest compelling palatability for Nile tilapia juveniles, by displaying a 10.82% increase of the palatability index, 17% of final feed consumption, and presented a rejection number 6.89 times lower than FPE.
author	Sanches-Alves,Denis Rogério Silva,Thibério Carvalho da Rocha,Joana D'arc Maurício Oliveira,Suzana Raquel de Señor,Altevir Boscolo,Wilson Rogério
author_facet	Sanches-Alves,Denis Rogério Silva,Thibério Carvalho da Rocha,Joana D'arc Maurício Oliveira,Suzana Raquel de Señor,Altevir Boscolo,Wilson Rogério
author_sort	Sanches-Alves,Denis Rogério
title	Compelling palatability of protein hydrolysates for Nile tilapia juveniles
title_short	Compelling palatability of protein hydrolysates for Nile tilapia juveniles
title_full	Compelling palatability of protein hydrolysates for Nile tilapia juveniles
title_fullStr	Compelling palatability of protein hydrolysates for Nile tilapia juveniles
title_full_unstemmed	Compelling palatability of protein hydrolysates for Nile tilapia juveniles
title_sort	compelling palatability of protein hydrolysates for nile tilapia juveniles
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000200371
work_keys_str_mv	AT sanchesalvesdenisrogerio compellingpalatabilityofproteinhydrolysatesforniletilapiajuveniles AT silvathiberiocarvalhoda compellingpalatabilityofproteinhydrolysatesforniletilapiajuveniles AT rochajoanadarcmauricio compellingpalatabilityofproteinhydrolysatesforniletilapiajuveniles AT oliveirasuzanaraquelde compellingpalatabilityofproteinhydrolysatesforniletilapiajuveniles AT senoraltevir compellingpalatabilityofproteinhydrolysatesforniletilapiajuveniles AT boscolowilsonrogerio compellingpalatabilityofproteinhydrolysatesforniletilapiajuveniles
_version_	1714205220620206080

Compelling palatability of protein hydrolysates for Nile tilapia juveniles

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