Crescimento compensatório e privação alimentar no desempenho produtivo do robalo-flecha

Abstract

Resumo -O objetivo deste trabalho foi avaliar o efeito da privação alimentar e a ocorrência de crescimento compensatório sobre o desempenho produtivo de formas jovens do robalo-flecha (Centropomus undecimalis). O experimento teve duração de 60 dias, em que os peixes -35 indivíduos por tanque -foram divididos nos três seguintes grupos de tratamentos: com alimentação todos os dias (controle); com alimentação cinco dias por semana, seguidos de dois dias de jejum; e com alimentação quatro dias por semana, seguidos de três dias de jejum. Os tratamentos de privação alimentar proporcionaram indicadores de desempenho significativamente inferiores aos do controle. Formas jovens da espécie não devem ser submetidas a períodos de privação alimentar, pelos prejuízos que esta prática acarreta ao desempenho produtivo.Termos para indexação: Centropomus undecimalis, hiperfagia, manejo alimentar, maricultura. Compensatory growth and food deprivation in common snook growth performanceAbstract -The objective of this work was to evaluate the effect of food deprivation and the occurrence of compensatory growth on the performance of common snook fingerlings (Centropomus undecimalis). The experiment lasted for 60 days, when fish -35 individuals per tank -were divided into three groups of treatments, as follows: daily feeding (control); feeding for five days a week, followed by two days of fast; and feeding for four days a week, followed by three days of fast. The treatments of alimentary restriction provided performance indicators significantly inferior to those of the control. Common snook fingerlings should not be subjected to food restriction because of the damages that this practice entails to productive performance.

Compensatory growth in Nodipecten nodosus scallops farmed in a tropical region (Sao Paulo state, southeastern Brazil)

“…Studies on CG are more common in fish (El Ghazali et al, 2009; Herrera et al, 2016; Oliveira et al, 2020) and prawns (Marques & Lombardi, 2011; Wei et al, 2008; Wu et al, 2001). In molluscs, Fermin (2002) described the occurrence of full CG in abalones ( Haliotis asinina ) after periods of feed restriction, whereas Auster and Stewart (1984) found that Argopecten irradians scallops presented CG characterized by faster growth after spawning, than slow prespawning growth.…”

Performance and food behaviour of Brycon orbignyanus larvae submitted under food restriction

“…The exact mechanisms for compensatory growth are still poorly understood, but hyperphagia and feed efficiency are the physiological bases of compensatory responses, occurring simultaneously or not (Hayward, Noltie, & Wang, 1997; Sevgili, Hossu, Emre, & Kanyilmaqz, 2013; Urbinati et al, 2014). When feeding is restored, animals submitted to a food deficit become hyperphagic compared to fish maintained with a continuous ad libitum food supply, reflecting in daily feed consumption (Ali et al, 2003; Gonçalves et al, 2014; Gurney, Jones, Veitch, & Nisbet, 2003; Herrera, Silva, Santos, Sousa, & Sanches, 2016). In Perca flavescens , the end of hyperphagia occurred after 2 weeks of recovery and in Lates calcarifer juveniles, up to 21 recovery days.…”