Compensatory growth in Nile tilapia Oreochromis niloticus: feed conversion ratio, size heterogeneity, and proximal composition

ABSTRACT A feeding test was performed to evaluate compensatory growth in the Nile tilapia (Oreochromis niloticus) and to assess changes in feed conversion ratio (FCR), body condition, and carcass composition associated with the imposed feeding strategy. The experiment was carried out under two diffe...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Poot-López,Gaspar Román, Gasca-Leyva,Eucario, González-Salas,Carlos, Guillen-Hernández,Sergio, Domínguez-May,Roger
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2020
Materias:	Oreochromis niloticus tilapia ration satiety feeding chart growth
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000300421
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0718-560X2020000300421
record_format	dspace
spelling	oai:scielo:S0718-560X20200003004212020-07-23Compensatory growth in Nile tilapia Oreochromis niloticus: feed conversion ratio, size heterogeneity, and proximal compositionPoot-López,Gaspar RománGasca-Leyva,EucarioGonzález-Salas,CarlosGuillen-Hernández,SergioDomínguez-May,Roger Oreochromis niloticus tilapia ration satiety feeding chart growth ABSTRACT A feeding test was performed to evaluate compensatory growth in the Nile tilapia (Oreochromis niloticus) and to assess changes in feed conversion ratio (FCR), body condition, and carcass composition associated with the imposed feeding strategy. The experiment was carried out under two different stages, restricted (RS) and compensated (CS), with six weeks long each other. Three hundred juveniles of Nile tilapia (average weight of 16.4 ± 0.2 g) were divided into three treatments and one control. The control group was fed to apparent satiation four times a day in both stages. The RS treatments were based on 100% (RS100), 80% (RS80), and 60% (RS60) of a feeding chart, respectively. In the next six weeks, fishes from the CS treatments (CS100, CS80, and CS60) were then fed to apparent satiation four times a day. In the RS, the control group displayed the most considerable weight gained, but with a significant FCR. Nevertheless, in the CS, the previous restricted treatments (RC80 and RC100) showed a compensatory growth, with a smaller FCR than the control group. The restricted-compensated rations did not have a significant effect on the size heterogeneity; when the food is restricted, fish use to moisturize their tissue to compensate for the muscle loss until they receive more food. However, when the food restriction levels are too high, the weight gain, lipid, and protein levels do not recover as they were before. Thus, restricted (marginally) and compensatory feeding strategies provide evidence that growth rates of fishes can be regulated.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.48 n.3 20202020-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000300421en10.3856/vol48-issue3-fulltext-2466
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Oreochromis niloticus tilapia ration satiety feeding chart growth
spellingShingle	Oreochromis niloticus tilapia ration satiety feeding chart growth Poot-López,Gaspar Román Gasca-Leyva,Eucario González-Salas,Carlos Guillen-Hernández,Sergio Domínguez-May,Roger Compensatory growth in Nile tilapia Oreochromis niloticus: feed conversion ratio, size heterogeneity, and proximal composition
description	ABSTRACT A feeding test was performed to evaluate compensatory growth in the Nile tilapia (Oreochromis niloticus) and to assess changes in feed conversion ratio (FCR), body condition, and carcass composition associated with the imposed feeding strategy. The experiment was carried out under two different stages, restricted (RS) and compensated (CS), with six weeks long each other. Three hundred juveniles of Nile tilapia (average weight of 16.4 ± 0.2 g) were divided into three treatments and one control. The control group was fed to apparent satiation four times a day in both stages. The RS treatments were based on 100% (RS100), 80% (RS80), and 60% (RS60) of a feeding chart, respectively. In the next six weeks, fishes from the CS treatments (CS100, CS80, and CS60) were then fed to apparent satiation four times a day. In the RS, the control group displayed the most considerable weight gained, but with a significant FCR. Nevertheless, in the CS, the previous restricted treatments (RC80 and RC100) showed a compensatory growth, with a smaller FCR than the control group. The restricted-compensated rations did not have a significant effect on the size heterogeneity; when the food is restricted, fish use to moisturize their tissue to compensate for the muscle loss until they receive more food. However, when the food restriction levels are too high, the weight gain, lipid, and protein levels do not recover as they were before. Thus, restricted (marginally) and compensatory feeding strategies provide evidence that growth rates of fishes can be regulated.
author	Poot-López,Gaspar Román Gasca-Leyva,Eucario González-Salas,Carlos Guillen-Hernández,Sergio Domínguez-May,Roger
author_facet	Poot-López,Gaspar Román Gasca-Leyva,Eucario González-Salas,Carlos Guillen-Hernández,Sergio Domínguez-May,Roger
author_sort	Poot-López,Gaspar Román
title	Compensatory growth in Nile tilapia Oreochromis niloticus: feed conversion ratio, size heterogeneity, and proximal composition
title_short	Compensatory growth in Nile tilapia Oreochromis niloticus: feed conversion ratio, size heterogeneity, and proximal composition
title_full	Compensatory growth in Nile tilapia Oreochromis niloticus: feed conversion ratio, size heterogeneity, and proximal composition
title_fullStr	Compensatory growth in Nile tilapia Oreochromis niloticus: feed conversion ratio, size heterogeneity, and proximal composition
title_full_unstemmed	Compensatory growth in Nile tilapia Oreochromis niloticus: feed conversion ratio, size heterogeneity, and proximal composition
title_sort	compensatory growth in nile tilapia oreochromis niloticus: feed conversion ratio, size heterogeneity, and proximal composition
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000300421
work_keys_str_mv	AT pootlopezgasparroman compensatorygrowthinniletilapiaoreochromisniloticusfeedconversionratiosizeheterogeneityandproximalcomposition AT gascaleyvaeucario compensatorygrowthinniletilapiaoreochromisniloticusfeedconversionratiosizeheterogeneityandproximalcomposition AT gonzalezsalascarlos compensatorygrowthinniletilapiaoreochromisniloticusfeedconversionratiosizeheterogeneityandproximalcomposition AT guillenhernandezsergio compensatorygrowthinniletilapiaoreochromisniloticusfeedconversionratiosizeheterogeneityandproximalcomposition AT dominguezmayroger compensatorygrowthinniletilapiaoreochromisniloticusfeedconversionratiosizeheterogeneityandproximalcomposition
_version_	1714205236895154176

Compensatory growth in Nile tilapia Oreochromis niloticus: feed conversion ratio, size heterogeneity, and proximal composition

Ejemplares similares