Effect of salinities on gastric emptying and nutrient absorption of tiger grouper × giant grouper (Epinephelus fuscoguttatus × e. lanceolatus) hybrid

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Abstract

The effects of salinity on the gastric emptying time (GET) and absorption of nutrient along the alimentary tract of tiger grouper (TG) × giant grouper (GG) (Epinephelus fuscoguttatus × E. lanceolatus) hybrid were studied. Juveniles TG×GG hybrid grouper (10.0 ± 0.5 cm total length; 50.5 ± 2.0 g) were reared in different salinities (10, 15, 20, 25 and 30 parts per thousand (ppt)) and fed with commercial pellet diet during the 60-day experimental period. The fish were then slaughtered sequentially at different time intervals after initial feeding to obtain GET. Our results showed that low salinity (10-20 ppt) lead to a shorter GET in the hybrid grouper. The shortest and longest GETs were observed in 15 ppt (12 h) and 30 ppt (18 h) treatments, respectively. Apparent digestibility coefficient (ADC) using ash contents was measured to determine the absorption of nutrient in each treatment. The absorption of macronutrient in TG×GG hybrid grouper was increased as the salinity decreased. The highest absorption occurred in 15 ppt (72% protein, 75% lipid, 68% carbohydrate and 74% energy) while the lowest absorption occurred in 30 ppt (59% protein, 64% lipid, 34% carbohydrate and 55% energy). The findings of this study suggested that 15 ppt salinity facilitates faster digestion and maximize the nutrient absorption of TG×GG hybrid and may enhance the growth rate of this newly developed grouper species.

Original languageEnglish
Pages (from-to)1077-1084
Number of pages8
JournalSains Malaysiana
Volume47
Issue number6
DOIs
Publication statusPublished - 1 Jun 2018

Fingerprint

Mycteroperca tigris
Epinephelus fuscoguttatus
gastric emptying
grouper
salinity
nutrients
carbohydrates
energy
lipids
ash content
pellets
proteins
digestibility
digestion

Keywords

  • Aquaculture
  • Digestion
  • Hybrid grouper
  • Nutrient absorption
  • Salinity

ASJC Scopus subject areas

  • General

Cite this

@article{827a81d3dede4026a93c3c6037fd79be,
title = "Effect of salinities on gastric emptying and nutrient absorption of tiger grouper × giant grouper (Epinephelus fuscoguttatus × e. lanceolatus) hybrid",
abstract = "The effects of salinity on the gastric emptying time (GET) and absorption of nutrient along the alimentary tract of tiger grouper (TG) × giant grouper (GG) (Epinephelus fuscoguttatus × E. lanceolatus) hybrid were studied. Juveniles TG×GG hybrid grouper (10.0 ± 0.5 cm total length; 50.5 ± 2.0 g) were reared in different salinities (10, 15, 20, 25 and 30 parts per thousand (ppt)) and fed with commercial pellet diet during the 60-day experimental period. The fish were then slaughtered sequentially at different time intervals after initial feeding to obtain GET. Our results showed that low salinity (10-20 ppt) lead to a shorter GET in the hybrid grouper. The shortest and longest GETs were observed in 15 ppt (12 h) and 30 ppt (18 h) treatments, respectively. Apparent digestibility coefficient (ADC) using ash contents was measured to determine the absorption of nutrient in each treatment. The absorption of macronutrient in TG×GG hybrid grouper was increased as the salinity decreased. The highest absorption occurred in 15 ppt (72{\%} protein, 75{\%} lipid, 68{\%} carbohydrate and 74{\%} energy) while the lowest absorption occurred in 30 ppt (59{\%} protein, 64{\%} lipid, 34{\%} carbohydrate and 55{\%} energy). The findings of this study suggested that 15 ppt salinity facilitates faster digestion and maximize the nutrient absorption of TG×GG hybrid and may enhance the growth rate of this newly developed grouper species.",
keywords = "Aquaculture, Digestion, Hybrid grouper, Nutrient absorption, Salinity",
author = "{Md. Noor}, Noorashikin and Das, {Simon Kumar} and {Che Cob}, Zaidi and {Abd. Ghaffar}, Mazlan",
year = "2018",
month = "6",
day = "1",
doi = "10.17576/jsm-2018-4706-01",
language = "English",
volume = "47",
pages = "1077--1084",
journal = "Sains Malaysiana",
issn = "0126-6039",
publisher = "Penerbit Universiti Kebangsaan Malaysia",
number = "6",

}

TY - JOUR

T1 - Effect of salinities on gastric emptying and nutrient absorption of tiger grouper × giant grouper (Epinephelus fuscoguttatus × e. lanceolatus) hybrid

AU - Md. Noor, Noorashikin

AU - Das, Simon Kumar

AU - Che Cob, Zaidi

AU - Abd. Ghaffar, Mazlan

PY - 2018/6/1

Y1 - 2018/6/1

N2 - The effects of salinity on the gastric emptying time (GET) and absorption of nutrient along the alimentary tract of tiger grouper (TG) × giant grouper (GG) (Epinephelus fuscoguttatus × E. lanceolatus) hybrid were studied. Juveniles TG×GG hybrid grouper (10.0 ± 0.5 cm total length; 50.5 ± 2.0 g) were reared in different salinities (10, 15, 20, 25 and 30 parts per thousand (ppt)) and fed with commercial pellet diet during the 60-day experimental period. The fish were then slaughtered sequentially at different time intervals after initial feeding to obtain GET. Our results showed that low salinity (10-20 ppt) lead to a shorter GET in the hybrid grouper. The shortest and longest GETs were observed in 15 ppt (12 h) and 30 ppt (18 h) treatments, respectively. Apparent digestibility coefficient (ADC) using ash contents was measured to determine the absorption of nutrient in each treatment. The absorption of macronutrient in TG×GG hybrid grouper was increased as the salinity decreased. The highest absorption occurred in 15 ppt (72% protein, 75% lipid, 68% carbohydrate and 74% energy) while the lowest absorption occurred in 30 ppt (59% protein, 64% lipid, 34% carbohydrate and 55% energy). The findings of this study suggested that 15 ppt salinity facilitates faster digestion and maximize the nutrient absorption of TG×GG hybrid and may enhance the growth rate of this newly developed grouper species.

AB - The effects of salinity on the gastric emptying time (GET) and absorption of nutrient along the alimentary tract of tiger grouper (TG) × giant grouper (GG) (Epinephelus fuscoguttatus × E. lanceolatus) hybrid were studied. Juveniles TG×GG hybrid grouper (10.0 ± 0.5 cm total length; 50.5 ± 2.0 g) were reared in different salinities (10, 15, 20, 25 and 30 parts per thousand (ppt)) and fed with commercial pellet diet during the 60-day experimental period. The fish were then slaughtered sequentially at different time intervals after initial feeding to obtain GET. Our results showed that low salinity (10-20 ppt) lead to a shorter GET in the hybrid grouper. The shortest and longest GETs were observed in 15 ppt (12 h) and 30 ppt (18 h) treatments, respectively. Apparent digestibility coefficient (ADC) using ash contents was measured to determine the absorption of nutrient in each treatment. The absorption of macronutrient in TG×GG hybrid grouper was increased as the salinity decreased. The highest absorption occurred in 15 ppt (72% protein, 75% lipid, 68% carbohydrate and 74% energy) while the lowest absorption occurred in 30 ppt (59% protein, 64% lipid, 34% carbohydrate and 55% energy). The findings of this study suggested that 15 ppt salinity facilitates faster digestion and maximize the nutrient absorption of TG×GG hybrid and may enhance the growth rate of this newly developed grouper species.

KW - Aquaculture

KW - Digestion

KW - Hybrid grouper

KW - Nutrient absorption

KW - Salinity

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U2 - 10.17576/jsm-2018-4706-01

DO - 10.17576/jsm-2018-4706-01

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VL - 47

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EP - 1084

JO - Sains Malaysiana

JF - Sains Malaysiana

SN - 0126-6039

IS - 6

ER -