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조피볼락(Sebastes schlegeli) 치어의 배합사료 적정 공급률과공급횟수
이진혁 ( Jin Hyeok Lee ),김강웅 ( Kang Woong Kim ),이봉주 ( Bong Joo Lee ),박건현 ( Gun Hyun Park ),이준호 ( Jun Ho Lee ),윤현호 ( Hyeon Ho Yun ),배승철 ( Sung Chul Bai ) 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.
저수온기 및 고수온기에 있어서 배합사료를 공급한 넙치(Paralichthys olivaceus) 치어의 적정 공급율
김강웅 ( Kang Woong Kim ),황남용 ( Nam Yong Hwang ),손맹현 ( Maeng Hyun Son ),김경덕 ( Kyoung Duck Kim ),이준호 ( Jun Ho Lee ),유의 ( Liu Yi ),윤용현 ( Yong Hyun Yun ),박건현 ( Gun Hyun Park ),김성삼 ( Sung Sam Kim ),이경준 ( Kyu 한국수산과학회(구 한국수산학회) 2011 한국수산과학회지 Vol.44 No.4
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.
치어기 넙치(Paralichthys olivaceus)에 있어서 어분 대체원으로써 탈피대두박을 이용하여 생산한 오징어 간분의 평가
김영철 ( Young Chul Kim ),배승수 ( Sung Su Bae ),이준호 ( Jun Ho Lee ),박건현 ( Gun Hyun Park ),이정열 ( Jeong Yeol Lee ),배승철 ( Sung Chul C. Bai ) 한국수산학회 2009 한국수산과학회지 Vol.42 No.3
This study was conducted to determine the proper inclusion levels of squid liver powder (SLP) and dehulled soybean meal (DHSM) as a fish meal (FM) replacement in the diets for olive flounders. All the experimental diets were formulated to be isonitrogenous (50% crude protein, CP) and isocaloric (17.1 kJ energy g-1 diet). Four diet were formulation of FM with SLP (DHSM) were tested at 0, 25, 50, 75% (SLP(DHSM)0, SLP(DHSM)25, SLP(DHSM)50 and SLP(DHSM)75, respectively). Triplicate groups of 12 fish with an average body weight of 5.56±0.1g(mean±S.D.) were fed one of three experimental diets for 7 weeks. Weight gain (WG) and the specific growth rate(SGR) of fish fed SLP(DHSM)0 and SLP(DHSM)25 diets were significantly higher than those of fish fed SLP(DHSM)50 and SLP(DHSM)75 diets (P<0.05). Also, WG and SGR of fish fed SLP(DHSM)50 had significantly higher WG and SGR than that of fish fed SLP(DHSM)75 (P<0.05). The feed efficiency (FE) and protein efficiency ratio (PER) of fish fed SLP(DHSM)0 and SLP(DHSM)25 were significantly higher than those fed SLP(DHSM)50 and SLP(DHSM)75 (P<0.05). The whole-body crude lipid content of fish SLP(DHSM)75 was significantly higher than that of fish fed SLP(DHSM)50 (P<0.05). However, there were no significant differences in whole-body moisture, crude protein and crude ash of fish fed all diets. Based on these growth performance results, the SLP(DHSM) combination replace up to 25% FM protein by the ANOVA test in juvenile olive flounder diets.
단위가축영양 : 토종 육계에 있어서 복합 생균제 및 면역증강제의 항생제 대체효과
이상범 ( Sang Bum Lee ),김병극 ( Byung Kuk Kim ),박창호 ( Chang Ho Park ),박건현 ( Gun Hyun Park ),김영성 ( Yong Cheng Jin ),강한석 ( Han Suk Kang ),김영철 ( Young Chul Kim ),김윤칠 ( Youn Chil Kim ),배승철 ( Sung Chul Bai ),김선 한국동물자원과학회(구 한국축산학회) 2011 한국축산학회지 Vol.53 No.5
This study was conducted to investigate the effects of dietary probiotics and immunomodulator on growth performance, carcass characteristics, fecal NH3 content and pathogenic bacteria counts in ileum and cecum and ileum of broiler chicken(Korean native chicken, HanHyup No.3). A total of 120(day-old) chicks were randomly divided into 5 treatments with 3 replicates and there were 8 birds per replicate. Dietary treatments consisted of five diets; the corn-soybean based control diet(C), the diet containing antibiotics (Avilamycin) 10 ppm(T1), the diet containing probiotics 1[(Lactobacillus(4.45×10(6))+yeast(1.51×10(6))+Bacillus subtilis (3.50×10(5))] at 0.5% level(T2), probiotics 2 [(Lactobacillus (6.70×10(7))+yeast(3.10×10(6))] at 0.5% level in diet(T3), and the diet containing probiotics 3[T2+β-glucan+organic acid](T4) and raised for 9 weeks. There were no significant differences among treatments in weight gain, feed intake and feed conversion. Carcass ratios of broilers were higher in T3 and T4 than other treatments, however, the differences were non-significant. Internal organs and liver, heart weight were significantly increased in T4 (p<0.05) compared to other treatments. The fecal NH3 gas content was decreased(p<0.05) in antibiotics fed group than others. However, probiotic fed groups were not different when compared with control. The number of Salmonella and E. coli in cecum were reduced in the group supplemented with probiotics and immunomodulator compared to the antibiotics(p<0.05). In this experiment, we showed that diets containing pro-biotics and immunomodulator were capable of an alternative to antibiotics.
수온별 조피볼락(Sebastes schlegeli) 치어의배합사료 적정 공급횟수
이진혁 ( Jin Hyeok Lee ),이봉주 ( Bong Joo Lee ),김강웅 ( Kang Woong Kim ),한현섭 ( Hyon Sob Han ),박건현 ( Gun Hyun Park ),이준호 ( Jun Ho Lee ),윤현호 ( Hyeon Ho Yun ),배승철 ( Sung Chul Bai ) 한국수산과학회 2013 한국수산과학회지 Vol.46 No.6
We conducted two feeding trials to investigate the optimal feeding frequency of juvenile Korean rockfish Sebastes schlegeli fed a commercial diet of expanded pellets containing 47.2% crude protein, 9.2% crude lipid, and 14.5% ash at two different water temperatures. In the first experiment, triplicate groups of 20 fish with an average weight of 2 g were fed an equal amount of diet (5.97%based on body weight) at one of six feeding frequencies (2, 3, 4, 5, 7, or 9 meals/day) for four weeks at 17.5˚C. After four weeks,we measured weight gain (WG), specific growth rate (SGR), feeding efficiency (FE), and protein efficiency ratio (PER). Fish fed diet five meals/day grew significantly better than those fed nine meals/day. The second experiment used identical experimental conditions and feeding regions, except the food ration was slightly less (5.92% based on body weight) and the water temperature was increased to 20˚C. After four weeks, we again measured WG, SGR, FE and PER. Fish fed seven meals/day grew significantly faster than those fed 2, 3, 4, or 9 meals/day. Whole-body protein levels in fish fed three meals/day was higher than those fed four meals/day in 17.5˚C water, but whole-body lipids in the fish fed four meals/day was higher than those fed two meals/day in 20˚C water. A second-order polynomial analysis based on WG suggested the optimal feeding frequency for juvenile Korean rockfish was five meals/day at 17.5˚C and six meals/day at 20˚C, indicating that fish reared in higher water temperature require higher feeding frequencies.