• 한국수산과학회지
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• 제32권4호
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• pp.391-394
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• 1999

참전복용 배합사료에 비타민 및 미네랄 혼합물의 첨가 효과를 조사하기 위해 실용적인 배합비에 비타민 혼합물 ($0\~2\%$)과 미네랄 혼합물 ($0\~6\%$)을 각각 달리 첨가한 사료로 평균체중 100mg의 참전복 치패를 3반복으로 4개월간 사육실험한 결과, 최종 평균 체중, 증체율, 가식부 중량, 체중에 대한 가식부 중량 비, 각장, 각폭 및 각장에 대한 체중 비의 값들은 사료의 비타민 및 미네랄에 영향을 받지 않았다 (P>0.05). 또한, 생존율과 가식부의 일반성분은 실험구간에 유의적은 차이를 보이는 실험구가 있기는 하였으나, 사료의 비타민이나 미네랄의 첨가수준에 따른 차이는 아니었다. 이상의 결과로부터 본 실험의 사료 배합비에는 비타민 혼합물과 미네랄 혼합물은 별도로 보충하지 않아도 될 것으로 판단되며, 그 만큼 사료단가를 절감시킬 수 있을 것으로 기대된다.

• 한국수산과학회지
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• 제31권6호
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• pp.869-874
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• 1998

사료종류에 따른 참전복의 적정 사육밀도를 조사하기 위해 평균 각장 8.41 mm의 치패를 $m^2$당 1430, 2860, 4290 및 5720마리로 설정하여 배합사료 및 미역을 실험구마다 3반복으로 15주간 공급하면서 사육 실험하였다. 전중, 패각 및 가식부의 성장은 사육밀도가 높아질수록 감소하는 경향을 보여 4290마리/$m^2$ 이상인 밀도구에서는 1430마리 /$m^2$ 밀도구와 유의차를 보였다(P<0.05). 또한 이러한 성장효과는 배합사료 공급구가 미역 공급구보다 밀도에 관계없이 양호한 성적을 보였으며, 동일 밀도구에서는 유의하게 (P<0.05) 배합사료 공급구가 높았다. 생존율도 성장과 비슷한 경향을 보였다. 실험 종료시 가식부의 일반성분의 변화는 사육밀도에는 영향을 받지 않았으나 사료종류에 따라 달라지는 경향을 보여 미역 공급구에 비해 배합사료 공급구의 수분과 단백질 함량은 낮고, 지질과 회분 함량은 높은 경향을 보였다 (P<0.05). 성장과 생존율 등을 고려하여 보면 각장 9$\~$17mm일 때 참전복의 적정 사육밀도는 사료의 종류에 관계없이 1 $m^2$당 2860마리 이하가 적절하다고 여겨진다.

• 한국양식학회지
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• 제10권4호
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• pp.417-424
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• 1997

전복 실험용 배합사료의 효능과 배합사료 성형시 염화칼슘 수용액 농도와 침적시간에 따른 효과를 조사하기 위하여 단백질과 에너지원으로 카제인, 북양어분, 대두박, 소맥분, 건조미역 분말, 오징어간유와 대두유를 첨가하고 점착제로 알긴산나트륨을 21% 사용한 실험 배합사료를 설계하여 5%, 10% 및 15%의 염화칼슘($CaCl_2$) 수용액에 각각 10초, 20초 및 60초간 담구어 알긴산나트륨을 칼슘염으로 치환시킨 9종의 실험 배합사료를 제조하였다. 또한, 외국산 배합사료 2종류, 생사료(건조미역) 및 배합사료와 생사료 혼합구를 설정하여 실험 배합사료와 비교하였다. 평균체중 0.3 g의 참전복 치패를 각 사료당 3 반복으로 17주간 사육 실험함 결과, 최종 평균체중, 증체율 및 생존률은 건조미역 공급구가 낮은 값을 보였으며, 그 외 실험구는 실험구간에 유의한 차이가 없었다(P>0.05). 평균 가식부 중량은 15% $CaCl_2$ 수용액에 각각 10초, 20초 및 60초간 담구어 알긴산나트륨을 칼슘염으로 치환시킨 9종의 실험 배합사료를 제조하였다.CaCl 하(2) 수용액에 10초간 처리한 실험구와 건조미역구가 낮은 값을 보였으나 체중에 대한 가식부의 무게에서는 모든 실험구에서 차이를 보이지 않았다. 실험 종료시 수분, 단백질 및 회분 함량은 사료에 영향을 받지 않았으나 (P>0.05), 지질함량은 외국산 배합사료가 첨가된 실험구에서 낮아지는 경향을 보였다. 이상의 결과로부터 배합사료를 성형할 때 염화칼슘의 농도와 침적시간은 전복의 성장과 체성분에 큰 영향을 미치지 못하는 것으로 나타났으며, 본 실험에서 설계된 배합사료는 건조미역보다 성장효과가 높았고 외국 시판사료와 그 성능이 동등한 것으로 나타나 차후 참전복 배합사료 연구에서 대조사료로 사용될 수 있을 것으로 기대된다.

• 한국양식학회:학술대회논문집
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• 한국양식학회 2003년도 추계학술발표대회 논문요약집
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• pp.73-73
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• 2003

This study was carried out to evaluate the utilization of fermented skipjack tuna viscera (FSTV) in the diet for juvenile abalone Haliotis discus hannai. Lactobacillus bulgaricus was used for fermentation of skipjack tuna viscera. Eight isonitrogenous (about 30% crude protein) diets were formulated to include different levels (0%, 10%, 20% and 30%) of FSTV as a replacer of either dietary fish meal or soybean meal. Three replicate groups of abalone were fed the experimental diets containing different levels of FSTV for 7 weeks. The inclusion of FSTV up to 30% in fish meal-based diet had no significant effect on survival, body weight, shell growth, and proximate composition of abalone (P>0.05). Weight gain of abalone fed the diet substituting 10% FSTV for soybean meal was not significantly different to that of abalone fed the control diet, however this value decreased in abalone fed the 20% and 30% FSTV (P<0.05).The contents of crude protein and lipid of soft body in abalone fed soybean meal-based diets were significantly affected by dietary FSTV level (P<0.05). The results of this study indicate that FSTV can be used as a partial substitute protein source for fish meal or soybean meal in the formulated diet for juvenile abalone.

• 한국수산과학회지
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• 제56권5호
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• pp.741-748
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• 2023

This study evaluated the supplemental effects of linseed oil (LO) as a substitute for docosahexaenoic acid oil (DHAO) in the diet of juvenile Atlantic bluefin tuna. A control diet (DHA) was formulated to contain 65% enzyme-treated fish meal and 3% of DHAO. A LO diet was formulated to contain 1% LO replacing 1% DHAO in DHA diet. In a feeding trial, 300 juvenile bluefin tuna (initial body weight 1.15 g) were randomly divided into two concrete tanks (70 ton capacity) and fed one of the experimental diets for 13 days. Weight gain was higher in the LO group (519%) than in the control (443%) while survival and protein digestibility were similar between groups. The biological assessment of the tuna digestive organs did not differ between the DHA and LO groups. The fatty acid composition of the carcass showed that α-linolenic acid was only observed in the LO group, and there was no difference in the composition of eicosapentaenoic acid and docosapentaenoic acid between the groups. These results indicate that LO could be a dietary good oil source for Atlantic bluefin tuna without apparent negative effects.

• 한국유기농업학회지
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• 제25권3호
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• pp.569-586
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• 2017

We inoculated a spent mushroom substrate from Flammulina velutipes (SMSF) with a microbial additive and assessed the effects on chemical composition, ruminal fermentation parameters, and total-tract nutrient digestibility. In Exp. 1, three cannulated Hanwoo steers were used in an in situ trial to determine the degradation kinetics of dry matter (DM) and crude protein (CP). In Exp. 2, three Hanwoo steers were randomly assigned to experimental diets according to a $3{\times}3$ Latin square for a 3-week period (2 weeks for adaptation and 1 week for sample collection). Experimental diets included the control diet (3.75 kg/d formulated concentrate mixture + 1.25 kg/d rice straw), SMSF diet (3.19 kg/d formulated concentrate mixture + 1.25 kg/d rice straw + 0.56 kg/d SMSF), and inoculated SMSF (ISMSF) diet (3.19 kg/d formulated concentrate mixture + 1.25 kg/d rice straw + 0.56 kg/d ISMSF). The chemical composition of ISMSF did not differ from that of SMSF. Microbial additive inoculation decreased pH (P<0.05) and improved preservation for SMSF. The percentages of DM, neutral detergent fiber (NDF), and acid detergent fiber (ADF) in ISMSF were slightly lesser than those in SMSF. Ruminal fermentation characteristics and total-tract nutrient digestibility were not affected by diet. Overall, microbial additive inoculation improved preservation for SMSF and may allow improved digestion in the rumen; however, the total digestible nutrients (TDN) of SMSF and ISMSF diets were slightly lesser than the control diet. The ISMSF can be used as an alternative feedstuff to partially replace formulated concentrate feed.

• Asian-Australasian Journal of Animal Sciences
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• 제12권5호
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• pp.776-782
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• 1999

Two Bangladeshi varieties of yellow corn-'Barnali' and 'Khaibhutta' were chemically analysed and used in the diet of laying chicken to determine their replacement value for wheat. Both the new varieties of yellow corn were found to be good sources of energy and the CP contents were comparable to wheat. Forty two, 29-week old randomly selected Starcross Brown commercial pullets were assigned to 7 dietary treatments with 6 replicates, each being an experimental unit. Diets were formulated replacing wheat quantitatively by two varieties of yellow corn either 0, 50, 75 or 100 per cent from a wheat based control diet. The production performance of laying hens fed diets formulated with Barnali or Khaibhutta at different dietary levels during an experimental period of 16 weeks was satisfactory and comparable to wheat based diet. Except egg yolk colour, the other internal arid external egg quality characteristics at 8th and 16th weeks of the experiment did not differ significantly. The egg yolk colour improved significantly (p<0.01) by feeding both the new varieties of corn and the degree of pigmentation of yolk increased as the dietary levels of corn increased at the expense of wheat. Considering laying performance, the new varieties of yellow corn, Barnali or Khaibhutta can be used in layer diet as replacement of wheat. Such a replacement would better that wheat-based diet in terms of egg yolk pigmentation.

• Asian-Australasian Journal of Animal Sciences
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• 제27권12호
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• pp.1749-1754
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• 2014

The current experiment was designed to evaluate the efficacy of adding the multi-enzyme mixture (Natuzyme) into layers' diets with different levels of energy and available phosphorus in relation to laying performance, egg qualities, blood cholesterol level, microflora and intestinal viscosity. Two hundred and fifty 43-wk-old Hy-Line commercial layers were divided into five groups with five replicates per group (10 birds per replicate) and fed one of five experimental diets. A corn and soybean meal-based control diet was formulated and used as a control diet. Two experimental control diets were formulated to reduce energy and crude protein contents (rE) or energy, crude protein and phosphorus contents (rEP). In addition, Natuzyme was added into either rE (rE-Natu500) or rEP (rEP-Natu500) diet to reach a concentration of 500 mg per kg of diet. The experiment lasted 8 weeks. There were no significant differences in feed intake, egg production, egg weight, egg qualities such as eggshell color or Haugh unit, total cholesterol, relative organ weights and cecal microflora profiles between any dietary treatments. Natu500 supplementation into the rE diet, but not rEP diet significantly increased egg mass and eggshell qualities such as strength and thickness, but it decreased cecal ammonia concentration and intestinal viscosity in laying hens. In conclusion, the present study shows that adding multiple enzyme preparation could improve performance of laying hens fed energy and protein restricted diets.

• 한국수산과학회지
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• 제34권5호
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• pp.570-575
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• 2001

우리나라의 주 양식 대상종인 참전복의 성장이나 육질을 개선시킬 수 있는 배합사료의 첨가제로서 한약제인 어보산의 효능을 평가하기 위해 대조사료와 한약제 첨가사료로 3회의 사육실험을 실시하였다. 평균체중 206mg, 827mg 및 432rng의 참전복을 대상으로 사료당 3반복으로 각각 10주간 (실험 1), 7주간 (실험 2) 및 19주간 (실험 3) 사육 실험한 결과, 모든 실험에서 생존율은 차이가 없었다 (P>0.05). 모든 실험에서 Obosan-C 첨가구의 체중 및 각장 성장은 대조구와 유의한 차이를 보이지 않았지만, 평균체중 432mg의 치패을 대상으로 19주간 사육 실험 3의 경우에는 Obosan-O 첨가 실험구의 체중 및 각장 성장이 대조구보다 유의하게 높았다 (P<0.05). 실험 종료시 전복 가식부의 수분, 단백질 및 회분 함량은 각 실험에서 한약제 첨가구와 대조구간에 차이가 없었으나, 실험 2에서 전복 가식부의 찌질 함량은 Obosan-C 첨가구가 대조구보다 유의하게 낮은 갔을 보였다 (P<0.05). 이상의 결과로부터 배합사료에 Obosan-O 첨가는 참전복의 성장을 개선시키는데 도움이 될 것으로 기대된다.

• Asian-Australasian Journal of Animal Sciences
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• 제11권1호
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• pp.43-50
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• 1998

Three hundred and fifty-two growing pigs were utilized in three growth trials to investigate the effects of crystalline amino acid supplementation on growing pigs' growth performance and feed consumption. In Exp. 1, diets were formulated on the basis of digestible amino acids. Utilization of rapeseed meal plus cottonseed meal (R + C) in diet supported similar average daily gain (ADG), feed/gain (F/G) and cost per gain (p > 0.05) to group of soybean meal (SBM). In Exp. 2, 14% CP diets containing equal amount of cottonseed meal and rapeseed meal were formulated with the addition of threonine and/or tryptophan. Supplementation with threonine improved ADG and F/G (p < 0.05). Supplementation with only tryptophan made no benefits for ADG of growing pigs. In Exp. 3, diets with different threonine level were formulated. Increasing dietary threonine to 0.54% improved (p < 0.05) ADG and F/G compared to 0.45% dietary threonine. Increase in dietary threonine did not improve ADG (p > 0.05) but decreased F/G (p < 0.05) because of a decrease in average daily feed intake. Pigs fed diet with dietary threonine/lysine ratio of 67.5% supported optimum growth performance.