Performance of head-started green turtle Chelonia mydas (Linnaeus1758) fed a commercial diet

Intongcome Atichat, . and Ninwat Santi, . and Kittiwattanawong Kongkiat, . and Kanghae Hirun, . and Thongprajukaew Karun, . Performance of head-started green turtle Chelonia mydas (Linnaeus1758) fed a commercial diet. pp. 160-172. ISSN 0116-6514

The selection of an appropriate diet for the head-started juvenile green turtles Chelonia mydas (Linnaeus 1758) conservation needs to be assessed. Growth performance feed utilisation behaviour and faecal characteristics of 45-day-old green turtles (91.880.08 g initial weight) were compared among dietary carnivorous fish diet(CFD) omnivorous fish diet(OFD) carnivorous shrimp diet(CSD) and a conventional fresh diet (FD) of fresh fish and vegetable as control. The completely randomised design had five replicates (4 treatments 5 replicates 5 subjects per replication) and the feeding trial was conducted for 6weeks. No mortality was observed in any of the treatment groups. Green turtles fed with CFD exhibited superior growth (weight gain 282.748.96 g and specific growth rate2.640.16 .day-1) and feed utilisation (feeding rate2.410.06 body weight.day-1and feed conversion ratio1.340.04 g feed. g gain-1). In terms of behaviour reduced aggression as indicated by low incidence of bitten hind limbs was noted along with good appetite in this group fed CFD. These findings suggest that CFD is a suitable choice among the commercially available diets for head-started juvenile green turtles conservation.

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Abstract

The selection of an appropriate diet for the head-started juvenile green turtles Chelonia mydas (Linnaeus 1758) conservation needs to be assessed. Growth performance feed utilisation behaviour and faecal characteristics of 45-day-old green turtles (91.880.08 g initial weight) were compared among dietary carnivorous fish diet(CFD) omnivorous fish diet(OFD) carnivorous shrimp diet(CSD) and a conventional fresh diet (FD) of fresh fish and vegetable as control. The completely randomised design had five replicates (4 treatments 5 replicates 5 subjects per replication) and the feeding trial was conducted for 6weeks. No mortality was observed in any of the treatment groups. Green turtles fed with CFD exhibited superior growth (weight gain 282.748.96 g and specific growth rate2.640.16 .day-1) and feed utilisation (feeding rate2.410.06 body weight.day-1and feed conversion ratio1.340.04 g feed. g gain-1). In terms of behaviour reduced aggression as indicated by low incidence of bitten hind limbs was noted along with good appetite in this group fed CFD. These findings suggest that CFD is a suitable choice among the commercially available diets for head-started juvenile green turtles conservation.

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Item Type:	Article
AGROVOC Term:	Chelonia mydas
AGROVOC Term:	Turtles
AGROVOC Term:	Diet preferences
AGROVOC Term:	Nature conservation
AGROVOC Term:	Growth rate
AGROVOC Term:	Feed utilization
AGROVOC Term:	Body weight
AGROVOC Term:	Mortality
AGROVOC Term:	Feed conversion efficiency
AGROVOC Term:	Juveniles
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/23659

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