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Exploring the Suitable Temperature and Diet for Growth and Gastric Emptying Time of Juvenile Malabar Blood Snapper (Lutjanus malabaricus Bloch & Schneider, 1801)

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Abstract

In this study we analyzed the effects of water temperature and diet on the growth properties and gastric emptying period of juvenile Malabar blood snapper (Lutjanus malabaricus) over a 30 day experimental period. Fish were collected from a local hatchery of Pulau Ketam, Selangor, Malaysia and immediately transferred to flow-through sea water system and subjected to four different temperatures (22, 26, 30, and 34 °C) and two diets (formulated pellet and shrimp). Body weight gain, food consumption, food conversion ratio, food consumption efficiency, specific growth rate, relative growth rate, daily growth rate, and gastric emptying time were significantly influenced by temperature and diet (P < 0.05). The best food conversion ratio was with the shrimp fed group recorded at 30 °C (1.33 ± 0.08). The highest growth rate was also observed in the shrimp fed group at 30 °C (3.97 ± 0.57% day−1), and the lowest was observed in the formulated pellet fed group at 22 °C (1.63 ± 0.29% day−1). No significant difference was observed between the groups subjected to temperatures of 26 and 30 °C. Similarly, the lowest gastric emptying period was detected in the shrimp fed group at 30 °C (16 h), where the proportion of meal residues in the stomach decreased from 100% to less than 8% after 12 h of starvation. A significantly longer gastric emptying period was observed in the formulated pellet fed group at 22 °C (28 h). Overall, the best results were observed on shrimp fed group subjected to a 30 °C temperature. The data obtained from this study suggest that a shrimp diet fed on L. malabaricus at 30 °C will optimize the commercial production of this important fish species.

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Acknowledgements

This study was financially supported by Ministry of Science Technology and Innovation Malaysia (# 04-01-02-SF1208) and Institute of Climate Change, Universiti Kebangsaan Malaysia (# GUP-2015-025 & GUP-2017-023) to the corresponding author.

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Correspondence to Simon Kumar Das.

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On behalf of all authors, the corresponding author states that there is no conflict of interest.

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Mazumder, S.K., Ghaffar, M.A. & Das, S.K. Exploring the Suitable Temperature and Diet for Growth and Gastric Emptying Time of Juvenile Malabar Blood Snapper (Lutjanus malabaricus Bloch & Schneider, 1801). Thalassas 35, 29–41 (2019). https://doi.org/10.1007/s41208-018-0081-2

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  • DOI: https://doi.org/10.1007/s41208-018-0081-2

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