사육사온과 먹이공급량이 조피볼락의 성장 및 사료효율에 미치는 영향

명정인,박승렬,장영진 한국양식학회 1997 韓國養殖學會誌 Vol.10 No.3

조피볼락 사육시 수온과 먹이공급량이 성장과 사료효율에 미치는 영향을 알기위하여 사육수온과 먹이공급량을 달리하여 사육실험을 한 결과는 다음과 같다. 사육수온 12, 15 및 $18^{\circ}C$에서 사육한 결과 $15^{\circ}C$ 실험구에서 일간사료섭취율 및 일간성장률은 3.64 및 1.66%로 다른 실험구에 비하여 높게나타났으나, 사료효율은 40.7-45.7%로 실험구간에 차이가 없었다. 먹이공급량을 어체중의 0.0-3.0% 범위로 하여 사육실험한 결과 사료효율은 절식구를 제외한 나머지 실험구에서는 41.1-57.2%의 범위로 유의차가 없었고, 일간성장률은 1.5-3.0%공급구에서는 0.79-0.86%의 범위로 차이가 없었다. 어체분석결과 육질부비율은 전실험구에서, 간중량지수, 장중량지수 및 비만도는 1.0-3.0% 공급구에서 차이가 없었다. 혈액성상 분석결과 TP 및 TG는 전실험구에서, GOT, GPT, TG, GL 및 Ht는 1.0-3.0% 공급구에서 차이가 없었다. 이상의 결과로부터 조피볼락 1년생은 육상수조양식시 사육수온은 15-18$^{\circ}C$에서, 먹이공급량은 포식량의 약 70-80%가 적당한 것으로 사료된다. The experiment was conducted t determine the effects of water temperature and daily feeding rate on Koran rockfish growth. The first experiment was carried out to know the growth of the fish in the different water temperature. The second experiment was carried out to know the effects of feeding rate of the fish. In the first experiment, feed efficiency was unaffected by the different water temprature 12, 15 and $18^{\circ}C$, but feed intake and growth rate were affected by the water temperature. Feed intake and growth rate of the fish reared in $15^{\circ}C$ were higher than those of the other groups. In the second experiment, feed efficiency was unaffected by feeding rate except the starve group. Daily growth rate of the fish fed 1.0% diet/BW or more. HSI, VSI, condition factor, GOT, GPT, TG, GL and Ht of fed groups were unaffected by the feeding rate in the experiment. Absoption ratios of protein and lipid were not different with the different feeding rates in fed fish groups. These results indicate that the optimum daily feeding rate of yearling Korean rockfish is about 70-80% of satiation rate.

조피볼락(Sebastes schlegeli) 치어의 배합사료 적정 공급률과공급횟수

이진혁,김강웅,이봉주,박건현,이준호,윤현호,배승철 한국수산과학회 2013 한국수산과학회지 Vol.46 No.6

Two feeding trials were conducted to investigate the effects of feeding rate and frequency on growth performance and body composition of juvenile Korean rockfish Sebastes schlegeli reared at 15.0±0.3°C. In the first trial, three replicate fish groups averaging 2.07±0.03 g were fed a commercial diet with one of seven different daily feeding rates: 1.00%, 2.00%, 2.50%, 2.75%, 3.00%,3.25%, and satiation (3.34%) based on body weight (BW). After four weeks of feeding, fish fed the 3% diet showed significantly higher weight gain (WG) and feed efficiency (FE) than fish that received the other feeding rates. In the second trial, the optimum feeding frequency was evaluated with three replicate fish groups averaging 2.04±0.03 g. Fish were fed a commercial diet at 2.87%BW with six different daily feeding frequencies: 2, 3, 4, 5, 7, or 9 meals. After four weeks of feeding, WG, specific growth rate, FE,and protein efficiency rate in fish fed 3 meals d-1 were significantly higher than those of fish fed 7 or 9 meals d-1. In both feeding trials,proximate composition of the entire body changed depending on the feeding rate or frequency. A broken-line regression analysis based on weight gain suggested that the optimum daily feeding rate and frequency for juvenile Korean rockfish at 15°C was 2.9%BW d-1 and 2–3 meals d-1, respectively.

적수온(21-24℃)에서 사육한 성장기(317 g) 넙치(Paralichthys olivaceus)의 배합사료 적정 공급률

오대한,이경준,김성삼,김강웅,김경덕,이봉주,한현섭,김재원,Okorie Eme Okorie,배승철 한국수산과학회 2014 한국수산과학회지 Vol.47 No.4

We investigated the effects of feeding rate on the growth performance, blood components, and histology of grow- ing olive flounder Paralichthys olivaceus . Optimum feeding rate (initial fish mean weight : 316.7±6.18 g) was de- termined under the optimum water temperature. Two replicated groups of fish were fed a commercial diet at rates of 0%, 0.4%, 0.6%, and 0.8% of body weight (BW) per day, and to satiation. Feeding trial was conducted using a flow-through system with 10 1.2-metric ton aquaria receiving filtered seawater at 21-24°C for 3 weeks. Weight gain (WG) and specific growth rate (SGR) were significantly higher in fish fed to satiation (1.0% BW/day) than in those in other treatments. These parameters were negative and significantly lower in the starved fish than in fish fed the experimental diet at all feeding rates. There were no significant differences in WG and SGR among fish fed at 0.4%, 0.6%, and 0.8% BW/day. Hematocrit and hemoglobin in fish fed to satiation were significantly lower than those in other treatments. Histological changes of fish fed at 0.6% BW/day indicated that this group was in the best condition; differences were not found in tissues of fish fed at 0%, 0.6% and 1.0% BW/day. Broken-line regression analysis of weight gain showed that the optimum feeding rate of olive flounder weighing 317 g was 0.99% BW per day at the optimum water temperature.

A Review of the Optimum Feeding Rates and Feeding Frequency in Korean Rockfish Sebastes schlegeli Reared at Seven Different Water Temperatures

Mizanur, Rahman M.,Bai, Sungchul C. The Korean Society of Fisheries and Aquatic Scienc 2014 Fisheries and Aquatic Sciences Vol.17 No.2

Seven feeding trials were conducted to determine the effects of feeding rate and frequency in the Korean rockfish Sebastes schlegeli at seven different water temperatures. Two feeding-rate experiments for 5-g Korean rockfish at $17^{\circ}C$ and $20^{\circ}C$; three feeding rate experiments for 16-g Korean rockfish at $16^{\circ}C$ and $24^{\circ}C$; and finally, two feeding frequency experiments for 93- and 100-g at $15^{\circ}C$ and $20^{\circ}C$ were conducted. Twenty fish averaging $5.5{\pm}0.2$ g ($mean{\pm}SD$) were randomly distributed into 18 indoor tanks containing 40-L seawater from a semi-recirculation system. Fish were fed a commercial diet for 4 weeks at water temperatures of $17^{\circ}C$ and $20^{\circ}C$. Two feeding trials were conducted to determine the optimum feeding frequency in growing Korean rockfish reared at temperatures of $15^{\circ}C$ and $19^{\circ}C$. Broken line regression analysis of weight gain (WG) indicated that the optimum feeding rates of 5-g growing Korean rockfish were 4.48% (BW/day; BW, body weight) at $17^{\circ}C$ and 4.83% (BW/day) at $20^{\circ}C$. Broken line regression analysis of WG showed optimum feeding rates of 16-g juvenile Korean rockfish of 3.41% (BW/day) at $16^{\circ}C$, 3.75% (BW/day) at $20^{\circ}C$, and 3.34% (BW/day) at $24^{\circ}C$. The biological performance, results, along with morphological indices and serological characteristics, suggest that a feeding frequency of 1 meal/day was optimal to improve WG in growing Korean rockfish grown from 93 to 133 g at a water temperature of $15^{\circ}C$, and 100 to 132 g at $19^{\circ}C$.

저수온(12-14℃)에서 사육한 미성어기(370 g) 넙치(Paralichthys olivaceus)의 배합사료 적정 공급률

김성삼,김강웅,김경덕,이봉주,한현섭,이경준 한국수산과학회 2014 한국수산과학회지 Vol.47 No.6

We investigated the effects of feeding rate on the growth performance and blood components of sub-adult olive flounder Paralichthys olivaceus . Optimum feeding rate (initial fish mean weight : 370±5.72 g) was determined under the low water temperature. Two replicated groups of fish were fed a commercial diet at rates of 0%, 0.3%, 0.4%, 0.5%, and 0.6% body weight (BW) per day, and to satiation (0.75%). Feeding trial was conducted under a flow-through system with 12 1.2-metric ton aquaria receiving filtered seawater at 12–14°C for 4 weeks. Weight gain (WG) and specific growth rate (SGR) for fish fed at 0.6% BW per day was significantly higher than that of unfed fish (0%) and fish fed at 0.3% and 0.4% BW per day. There were no significant differences in WG and SGR among fish fed at 0.5%, 0.6%, and 0.75%. These parameters were negative and significantly lower in the starved fish than in fish fed the experimental diet at all feeding rates. Survival for unfed fish (0%) was significantly lower than that of fish fed at 0.4%, 0.5%, and 0.6%. Hematocrit and hemoglobin content of fish fed at 0% and 0.75% (satiation) were significantly lower than that of fish fed at 0.4% BW per day. Total protein content in unfed fish was significantly lower than those in other treatments. Broken-line regression analysis of weight gain showed that the optimum feeding rate of olive flounder weighing 370 g was 0.51% BW per day at the low water temperature.

A Review of the Optimum Feeding Rates and Feeding Frequency in Korean Rockfish Sebastes schlegeli Reared at Seven Different Water Temperatures

Rahman M Mizanur,배승철 한국수산과학회 2014 Fisheries and Aquatic Sciences Vol.17 No.2

Seven feeding trials were conducted to determine the effects of feeding rate and frequency in the Korean rockfish Sebastes schlegeli at seven different water temperatures. Two feeding-rate experiments for 5-g Korean rockfish at 17°C and 20°C; three feeding rate experiments for 16-g Korean rockfish at 16°C and 24°C; and finally, two feeding frequency experiments for 93- and 100-g at 15°C and 20°C were conducted. Twenty fish averaging 5.5 ± 0.2 g (mean ± SD) were randomly distributed into 18 indoor tanks containing 40-L seawater from a semi-recirculation system. Fish were fed a commercial diet for 4 weeks at water temperatures of 17°C and 20°C. Two feeding trials were conducted to determine the optimum feeding frequency in growing Korean rockfish reared at temperatures of 15°C and 19°C. Broken line regression analysis of weight gain (WG) indicated that the optimum feeding rates of 5-g growing Korean rockfish were 4.48% (BW/day; BW, body weight) at 17°C and 4.83% (BW/day) at 20°C. Broken line regression analysis of WG showed optimum feeding rates of 16-g juvenile Korean rockfish of 3.41% (BW/day) at 16°C, 3.75% (BW/day) at 20°C, and 3.34% (BW/day) at 24°C. The biological performance, results, along with morphological indices and serological characteristics, suggest that a feeding frequency of 1 meal/day was optimal to improve WG in growing Korean rockfish grown from 93 to 133 g at a water temperature of 15°C, and 100 to 132 g at 19°C.

적수온(20-24.5℃)에서 사육한 미성어기(384 g) 넙치(Paralichthys olivaceus)의 배합사료 적정 공급률

김성삼,김강웅,김경덕,이봉주,한현섭,김재원,배승철,이경준 한국수산과학회 2014 한국수산과학회지 Vol.47 No.5

We investigated the effects of feeding rate on the growth, blood components, and histology of sub-adult olive flounderParalichthys olivaceus. Optimum feeding rate (initial fish mean weight : 384.2±5.91 g ) was determined under theoptimum water temperature. Two replicated groups of fish were fed a commercial diet at rates of 0%, 0.3%, 0.5%, and0.7% body weight (BW) per day, and to satiation. The feeding trial was conducted using a flow-through system withten 1.2-metric ton aquaria receiving filtered seawater at 20-24.5°C for 3 weeks. After the feeding trial, the weight gain(WG) and specific growth rate (SGR) were significantly higher in fish fed at 0.7% BW/day and those fed to satiation(0.9% BW/day) than in fish fed at other feeding rates or in the unfed fish. These parameters were negative and significantlylower in the unfed fish than in those fed the experimental diet at all feeding rates. There were no significantdifferences in WG and SGR among fish fed at 0.3 and 0.5% BW/day and among those fed at 0.7% BW/day and tosatiation. The histological changes in the hepatopancreas, kidney, and anterior intestine of fish fed at 0, 0.5, and 0.9% BW/day did not differ much. Broken-line regression analysis of weight gain showed that the optimum feeding rateof olive flounder weighing 384 g was 0.74% BW per day at the optimum water temperatures.

적수온(21℃)에서 사육한 성장기 넙치 (Paralichthys olivaceus)의 배합사료 적정 공급률

김성삼(Sung-Sam KIM),김강웅(Kang-Woong KIM),김경덕(Kyoung-Duck KIM),이봉주(Bong-Joo LEE),한현섭(Hyon-Sob HAN),김재원(Jae-Won KIM),배승철(Sungchul C. BAI),이경준(Kyeong-Jun LEE) 한국수산해양교육학회 2014 水産海洋敎育硏究 Vol.26 No.4

This study was conducted to investigate the effects of feeding rate on growth performance, blood components and histology of growing olive flounder. The experiment was carried out to determine the optimum feeding rate of the fish (initial fish mean weight of 97±3.0 g) at the optimum water temperature. Two replicated groups of fish were fed commercial diet at the feeding rates of 0, 1.0, 1.65 and 2.3% body weight (BW)/day and satiation. Feeding trial was conducted under a flow-through system with ten 1.2 metric ton aquaria receiving filtered seawater at 21±2℃ for three weeks. Weight gain and specific growth rate (SGR) for fish fed to satiation were significantly higher than those for the unfed fish and for fish fed at 1.0 and 1.65% BW/day. There were no significant differences in values of such parameters between fish fed at 1.65% and those fed at 2.3% BW/day and between fish fed at 2.3% and those fed to satiation. Weight gain and SGR for the unfed fish were significantly lower than those for fish in the other treatments. All the tissues (hepatopancreas, kidney and anterior intestine) were in good condition in fish fed the experimental diet at different feeding rates. This result indicates that the optimum feeding rates of olive flounder (97-160 g) was approximately 2.52% BW/day at the optimum water temperature.

사료 공급 횟수 및 만복 공급율이 비단잉어 홍백 치어의 성장 및 체조성에 미치는 영향

김이오,이상민 한국수산과학회 2010 한국수산과학회지 Vol.43 No.4

We investigated the proper feeding frequency and satiation rate for the growth of red- and white-colored carp fingerlings in a feeding experiment. Triplicate groups of fish averaging 6.3 g were fed diets at four feeding frequencies (1, 2, 3, or 4 meals a day) and two satiation rates (satiation and 80% satiation) for 6 weeks. The survival of the fish was not affected by either the feeding frequency or the satiation rate. The weight gain, feed efficiency, and protein efficiency ratio of fish were affected by the feeding frequency and satiation rate, and increased significantly with both. The feed efficiency and protein efficiency ratio with satiation feeding of fish fed four meals a day did not differ from those of fish fed three meals a day. The daily feed intake was affected by the feeding frequency and satiation rate. The moisture, crude lipid, and ash contents of whole body were affected by the feeding frequency. Moisture and crude lipid contents were affected by feeding satiation. Based on these results, we conclude that the proper feeding frequency and satiation rate for the optimum growth of red- and white-colored carp fingerlings is four meals a day with satiation feeding.

배합사료의 수침과 공급량이 넙치(Paralichthys olivaceus )의 성장, 혈액 및 조직 성상에 미치는 영향

김강웅,김성삼,김재원,손맹현,김경덕,배승철,이경준 한국수산과학회 2011 한국수산과학회지 Vol.44 No.5

Two consecutive feeding trials investigated the effects of feeding rate and pellet expansion by water-soaking on the growth performance, blood components and histology of olive flounder Paralichthys olivaceus . The first two experiments were carried out to determine the effects of pellet expansion and feeding rate. In the first experiment,growth performance, feed utilization and survival of fish were not significantly affected by pellet expansion for six weeks. There were no significant differences in hematocrit, hemoglobin, aspartate aminotransferase, alanine aminotransferase, glucose and total protein of fish fed the expanded pellet. However, whole-body lipid content of fish in the non-expanded group was significantly higher than that in the expanded group. Histological analysis of the anterior intestine revealed that fish in the expanded group had shorter and smaller mucous folds. These results indicate that pellet expansion had no beneficial effect in terms of growth performance, feed utilization and fish health. In the second experiment, weight gain and feed efficiency were significantly increased as feeding rate increased from 0 to 2.5% body weight per day (BW/d), but there were no significant differences in weight gain or feeding efficiency in fish fed the expanded pellet at ratios of 2.5% BW/d and satiation for three weeks. Plasma aspartate aminotransferase activity of fish fed the expanded pellet at a ratio of 2.5% was significantly lower than that of starved fish. Histological analysis of the anterior intestine revealed that fish in the 0% group had shorter mucous folds. Broken-line regression analysis suggested that the optimum juvenile olive flounder feeding rate was 3.5% BW/d during the low temperature season (16-17˚C).