Influence of feeding frequency on growth, feed intake and proximate composition of juvenile red seabream Pagrus major

Title
Influence of feeding frequency on growth, feed intake and proximate composition of juvenile red seabream Pagrus major
Author(s)
오승용; 박진우
KIOST Author(s)
Oh, Sung Yong(오승용)
Publication Year
2018-05-10
Abstract
A 10-week feeding trial was conducted to investigate the influences of feeding frequency on growth, feed intake and proximate composition of juvenile red seabream Pagrus major. A total 240 juveniles (initial mean body weight 22.7 ± 0.8 g) were randomly distributed to twelve 75-L tanks with density of 20 fish per tank. Fish were hand-fed to apparent satiation using a commercial diet (42.5% protein) at one of four different feeding frequencies (one to four meals a day) with triplicates. At the end of feeding trial, weight gain, specific growth rate, and feeding rate in fish fed three and four meals a day were significantly (P < 0.05) higher than those of fish one or two meals a day. The feed efficiency was not significantly (P > 0.05) affected by the feeding frequency. The inter-individual size variation in body weight significantly (P < 0.05) decreased with the increase of feeding frequency. The highest feed intake of fish occurred at the first meal (08:30) of each treatment. As feeding frequency increased, crude lipid content also increased, but crude ash content decreased (P < 0.05). Our results suggest that optimum feeding frequency for improving growth rate of juvenile red seabream weighing from 20 to 80 g is three meals a day under our specific experimental conditions.were randomly distributed to twelve 75-L tanks with density of 20 fish per tank. Fish were hand-fed to apparent satiation using a commercial diet (42.5% protein) at one of four different feeding frequencies (one to four meals a day) with triplicates. At the end of feeding trial, weight gain, specific growth rate, and feeding rate in fish fed three and four meals a day were significantly (P < 0.05) higher than those of fish one or two meals a day. The feed efficiency was not significantly (P > 0.05) affected by the feeding frequency. The inter-individual size variation in body weight significantly (P < 0.05) decreased with the increase of feeding frequency. The highest feed intake of fish occurred at the first meal (08:30) of each treatment. As feeding frequency increased, crude lipid content also increased, but crude ash content decreased (P < 0.05). Our results suggest that optimum feeding frequency for improving growth rate of juvenile red seabream weighing from 20 to 80 g is three meals a day under our specific experimental conditions.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/23382
Bibliographic Citation
2018년도 한국수산과학회 춘계학술대회, pp.270, 2018
Publisher
한국수산과학회
Type
Conference
Language
English
Publisher
한국수산과학회
Related Researcher
Research Interests

Fish aquaculture,Aquacultural engineering,Environmental physiology,어류 양식,양식 공학,환경생리학

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