• 한국양식학회:학술대회논문집
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• 한국양식학회 2002년도 춘계 한국양식학회 학술대회 발표요지
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• pp.241-242
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• 2002

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2003년도 춘계 수산관련학회 공동학술대회발표요지집
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• pp.175-176
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• 2003

Dietary protein is the most expensive component in flounder feed because of the high protein requirement of this species. The non-protein energy sources may also influence the protein utilization of fish. The inclusion of adequate levels of non-protein energy sources in diets can minimize use of protein as an energy source. Protein sparing effect by fat and carbohydrate has been studied in other fish. (omitted)

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2001년도 추계 수산관련학회 공동학술대회발표요지집
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• pp.257-258
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• 2001

The freshwater snail genus Semisulcospora is widespread in Korea, Japan, Taiwan and China (Davis, 1969). Semisulcospira gottschei is becoming a candidate shellfish species for aquaculture in Korea. Although amino and fatty acids composition of S. gottschei has been reported by Sim et al. (1994), no information on nutrient requirements for this species is available. (omitted)

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2001년도 춘계 수산관련학회 공동학술대회발표요지집
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• pp.293-294
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• 2001

In nutrition studies of fish, determining the optimum dietary protein level for growth of fish is generally a primary consideration because protein is not only the major constituent of fish body, but also it has critical functions as enzymes and hormones. Many studies have been carried out to determine the protein requirements of fish, and the estimated protein requirements range from 30％ to 55％ of diet. (omitted)

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2001년도 춘계 수산관련학회 공동학술대회발표요지집
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• pp.144-145
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• 2001

Marine microalgae are used extensively in mariculture as food for marine animals, in particular larval and juvenile molluscs, crustaceans and fish. A wide range of microalgae has been tested, because not all species are equally successful in supporting growth of a particular animal. In addition, bioactivities of marine microalgae are recently investigated for the effective exploitation of unutilized marine resources. (omitted)

• 한국수산과학회지
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• 제56권3호
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• pp.324-330
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• 2023

We investigated the relative growth and squamation of larvae and juveniles of cultured Larimichthys polyactis. Analysis of the relative growth of larvae and juveniles showed that their preanal length, head length, eye diameter, body depth, and snout length increased with growth. There was no significant chage in the relative growth. The ratio of preanus length to standard length (SL) increased rapidly until SL was approximately 12 mm, and then increased gradually. Cycloid scales first appeared on the lateral line, progressed to the abdominal cavity at 15.13 mm SL, and expanded to the occipital region, base of pectoral fin, and ventral region of the eye at 17.82 mm SL. At 18.03 mm SL, scales formed on the cheek, and those at the base of pectoral fin and in the abdominal cavity were connected to each other. At 19.06 mm SL, major part of the head was covered by scales, except near the lower jaw. Cycloid scales on the lateral line changed to ctenoid scales at the range of 31.71-32.24 mm SL, and those on the nape changed at the range of 69.02-70.84 mm SL. Our results may help to establish conservation and management strategy for Larimichthys polyactis aquaculture.

• Fisheries and Aquatic Sciences
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• 제27권5호
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• pp.283-293
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• 2024

Mahseer (Tor soro) growth performance tends to be slow, necessitating further development and intensification of cultivation. One way to develop aquaculture intensification is to manipulate cultivation containers to create optimal environmental conditions for the mahseer to grow. This study aimed to examine the body performance and growth performance of mahseer reared in different colored containers. Experimental research with completely randomized design was employed, with four colored container treatments namely treatment A (transparent), B (green), C (blue), and D (black), with four replications in each treatment. Findings indicate that different rearing media colors had significant effect on absolute length (4.68 ± 0.24 cm), absolute weight (1.58 ± 0.35 g), specific growth rate (2.17 ± 0.38%), feed conversion ratio (2.87 ± 0.04), survival rate (100 ± 0.00%), gross energy (3,816 ± 65.05 cal/g), and body proximate. Physiologically, mahseer fish bred using blue and black containers tend to be more resistant to stress.The best body performance and growth performance were observed in the blue and black colored containers.

• 한국패류학회지
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• 제30권4호
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• pp.321-331
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• 2014

현 시점에서 동해 북부에 한정되어 양식이 이루어지고 있는 큰가리비 양식생산량 확대를 위하여 동부 북부에서 남부까지 양식시험을 통하여 성장 특성을 분석하여 생식생산량 확대를 위한 기초자료를 활용하고자 한다. 조기 종묘의 성장 특성으로 2014년 2월에 채란 및 채묘한 치패의 평균 각장, 각고는 $0.23{\pm}0.002mm$이였다. 고성장군의 경우, 6월에 평균 각장, 각고는 각각 $4.11{\pm}0.08mm$, $4.28{\pm}0.09mm$이였다. 10월에는 $23.63{\pm}3.4mm$, $24.19{\pm}4.5mm$이었다. 저성장군의 경우, 6월에 평균 각장, 각고는 각각 $2.23{\pm}0.7mm$, $1.99{\pm}0.9mm$이였고, 10월에 $1.99{\pm}0.9mm$, $17.59{\pm}4.5mm$로 성장하였다. 일간성장률은 고성장군은 0.037 mm/day, 저성장군은 0.027 mm/day 이었다. 8월에 지역별로 큰가리비의 성장을 보면 양양군, 강릉시, 영덕군, 포항시의 평균각장은 $7.93{\pm}0.2mm$으로 지역별로 큰가리비를 양성 시험한 결과, 포항 지역에서 각장 $26.90{\pm}3.6mm$로 가장 성장이 양호하였다. 이어서 영덕 지역이 $23.56{\pm}3.4mm$으로 나타났다. 이러한 결과로는 포항, 영덕 해수온과 식물플랑크톤이 큰가리비 성장에 적합하게 형성된 것으로 판단된다.

• 한국수산과학회지
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• 제42권1호
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• pp.26-33
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• 2009

This experiment was conducted to examine the utilization of added dietary selenium (Se) as an immune stimulant in juvenile olive flounder, Paralichthys olivaceus. Fish averaging $4.0{\pm}0.1\;g$ ($mean{\pm}SD$) were fed one of seven semi-purified diets containing 0.56, 1.07, 2.86, 4.56, 43.15, 90.71, or 161.74 mg of Se/kg ($Se_{0.56}$, $Se_{1.07}$, $Se_{2.86}$, $Se_{4.56}$, $Se_{43.2}$, $Se_{90.7}$ and $Se_{161.7}$, respectively) for 12 weeks, respectively. At the end of the feeding trial, the fish fed diets containing more than 43.2 mg of Se/kg showed above 90% mortality. There were no significant differences in weight gain, feed efficiency, specific growth rate, protein efficiency ratio, or hematological characteristics among the fish fed the $Se_{0.56}$, $Se_{l.07}$, $Se_{2.86}$, and $Se_{4.56}$ diets. Se concentrations of the gill, kidney, muscle and liver tissues occurred in dose-dependent manners. Alternative complement pathway activation and the chemiluminescene responses of the fish fed the $Se_{1.07}$ diet were significantly higher than those of the fish fed the other diets (P<0.05). These results indicate that the optimum dietary supplementation level of Selenium as selenoyeast could be 1.07 mg of Se/kg based on the non-specific immune responses of juvenile oilve flounder, Paralichthys olivaceus.

• 한국수산과학회지
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• 제44권4호
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• pp.345-351
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• 2011

Two feeding trials were conducted to investigate the optimum feeding rates in juvenile olive founder Paralichthys olivaceus fed practical expanded pellet(EP) containing 58.1% crude protein, 10.7% crude lipid, and 10.8% ash at low and high water temperatures. In the first experiment, triplicate groups of 15 fish with average weight of 7.7 g were fed at one of seven feeding rates(0, 1, 1.5, 2, 2.25, or 2.5% of body weight/day or to satiation) for 4 weeks at low water temperature. In the second experiment, quadruplicate groups of 20 fish with average weight of 5.5 g were fed at one of eight feeding rates(0, 3, 3.5, 4, 4.25, 4.5, or 4.75% of body weight/day or to satiation) for 4 weeks at high water temperature. Based on growth performance, we estimated that the optimum feeding rates for juvenile olive flounder were 1.97-2.51% and 4.82-6.36% of body weight/day at low and high water temperatures, respectively.