• Journal of the Korean Society of Food Science and Nutrition
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• v.32 no.6
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• pp.882-886
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• 2003

Effect of kochujang (Korean red pepper soybean paste) on the reduction of body weight and lipid levels of adipose tissues and serum were investigated in the rats fed a high-fat diet. Male Sprague-Dawley rats were fed for four weeks with diets containing either a normal diet (ND, based on the AIN-76TM diet), high fat diet (HFD, supplemented with 20% corn oil in ND), CK diet (10% commercial kochujang in HFD), TK I diet (10% 0 day (non-) fermented traditional kochujang in HFD), TKII diet (10% 6-month fermented traditional kochujang in HFD), or RPP diet (3% red pepper powder in HFD). CK, TK I and TKII in the diet significantly reduced the body weight gain compared to the control (HFD), whereas red pepper powder had no such effect. TKII supplementation in the high-fat diet reduced epididymal and perirenal fat pad weight significantly (p<0.05). Liver total lipid was lower in TKII diet group than other kochujang and RPP diet groups. TKII and CK decreased the content of triglyceride in epididymal and perirenal fat pad that increased by high-fat diet. The cholesterol content of the perirenal fat pad was the lowest in the TKII diet group. TKII was also effective in lowering serum cholesterol level. These results indicated that properly ripened (fermented for 6-month) traditional kochujang exhibited more suppressive effects on body fat gain and lipid levels of adipose tissue and serum than RPP, commercial kochujang and the kochujang without fermentation.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.45 no.2
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• pp.132-138
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• 2012

An 8-week feeding experiment was conducted to evaluate three types of squid Sepia esculenta liver powder (SLP) as a dietary protein source replacing fish meal (FM) in juvenile olive flounder Paralichthys olivaceus. To replace FM, six experimental diets were formulated with three types (A, B, C) of SLP at the 5 and 10%: SLP-A5, SLP-A10, SLP-B5, SLP-B10, SLP-C5, and SLP-C10. One control diet contained 100% FM as the main protein source and another was a commercial diet (Com). Fish with an average body weight of $22.8{\pm}0.4$ g ($mean{\pm}SD$) were allocated randomly to aquaria in groups of 20 fish and fed the experimental diets in triplicate to satiation. The weight gain (WG) and specific growth rate (SGR) of fish fed the SLP-C10 diet were lower than those of fish fed the FM and SLP-B5 diets. No significant difference was observed in the WG and SGR among fish fed the diets other than SLP-C10. The feed efficiency (FE) and protein efficiency ratio (PER) of fish fed each SLP diet did not differ from those fed the control diet. However, fish fed SLP-C5 and SLP-C10 had a lower FE and PER than the fish fed commercial, SLP-A5 and SLP-B5 diets. Each SLP diet except for SLP-C10 could replace up to 10% of FM for juvenile olive flounder. The results of this experiment provide information that will assist in formulating an inexpensive practical diet containing SLP for juvenile olive flounder.

• Asian-Australasian Journal of Animal Sciences
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• v.14 no.12
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• pp.1758-1762
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• 2001

Equal number of red jungle fowl (JF) and commercial broiler chickens (CB), raised in battery cages, were provided a single complete diet (control) or a choice of a complete diet, ground corn and ground soybean from 21 to 56 days of age. There were significant genotype ${\times}$ feeding regimen interactions for several traits measured suggesting CB and JF responded differently to the two feeding regimens. The single fed CB had better growth and feed conversion ratios (FCR) than those under choice feeding. However, the body weight and FCR of JF were not affected by feeding regimen. While the single fed and choice-fed JF consumed similar amount of protein during days 21 to 55, the protein intake of the choice-fed CB was lower than the control. From days 21 to 55, irrespective of genotype, choice-fed chicks consumed less energy than their single fed counterparts. Regardless of genotype, the trend in the proportion of each feed consumed was similar with complete diet>corn>soybean. In conclusion, while choice-fed JF were capable to select nutrient necessary for maximum growth, choice feeding was detrimental to growth and feed conversion ratio in CB.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.39 no.2
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• pp.100-105
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• 2006

This study was conducted to evaluate the effects of extruded pellet (EP) diets, as compared to a raw fish moist pellet (MP) diet for olive flounder, Paralichthys olivaceus, grown in commercial-scale aquaculture for 1 year. Four diets with duplication per diet were formulated for this experiment: two experimental EP diets (EP1 and EP2), one commercial EP diet (CEP), and a raw fish MP diet (MP). The MP diet consisted of 80% frozen horse mackerel and 20% commercial binder meal. Fish weighing $30.1{\pm}0.1 g$ ($mean{\pm}SD$) were distributed randomly to each aquarium as a group of 2,600 fish. Weight gain (WG) and feed efficiency ratio (FER) of fish fed EP2 and MP were higher (P<0.05) than those of fish fed CEP, while those of fish fed EP1 did not differ (P>0.05) from those fed EP2 and MP. However, fish fed the MP diet had a higher survival rate than fish fed the other diets. Fish fed EP2 had higher serum, phospholipids and total protein levels, and lower levels of serum glutamic-oxaloacetic transaminase (GOT), glutamic-pyruvic transaminase (GPT), and total cholesterol than fish fed MP (P<0.05). Dorsal muscle and liver proteins and lipid of fish fed EP1 were higher (P<0.05) than those of fish fed CEP, while those of fish fed EP1 and MP did not differ from those of fish fed EP2 (P>0.05). These results strongly suggest that EP1 could be developed to replace MP for grow-out stage production of olive flounder without adverse effects on growth performance.

• Journal of Aquaculture
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• v.10 no.4
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• pp.417-424
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• 1997

This study was carried out to investigate the effects of experimental formulated diets, commercial diets and natural diet(dried Undaria) on growth and body composition of Haliotis discus hannai. Experimental diets was formulated to provide 34.1% protein and 7.5% lipid, and prepared by different $CaCl_2$ concentration (5, 10 and 15%) and dipping time (10, 20 and 60 second) in solution. The juvenile abalone average weighing 0.3g were distributed in a flow-through aquarium system using a cmpletely randomized desing with 13 diets and 3 replictes per diet (50 abalone/tank), and fed diets for 17 weeks. The abalone fed the time nine experimental formulated diets and two commercial diets showed better growth performance than that of natural diets. No significant differences were found among abalone fed the experimental diets and commercial diets in survival rate, weight gain, soft body weight and soft body composition (P>0.05).

• Journal of the Korean Society of Food Science and Nutrition
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• v.31 no.6
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• pp.1078-1083
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• 2002

Effects of chitosan-soybean curd (prepared using chitosan as a coagulant), commercial soybean curd and chitosan powder on serum lipid metabolism were investigated with rats fed high-fat diet for 6 weeks. Food intake of experimental groups fed high-fat (HF), chitosan-soybean curd (CSC), soybean curd (SC), or chitosan powder (CP)diet was lower compared to t]tat of normal group. Body weight gain was lower in rats fed the CSC, SC and CP diets than in rats fed the HF diet. There was no significant difference in total cholesterol concentration among all groups, but HDL-cholesterol concentration was higher and LDL-cholesterol concentration was lower in rats fed the CSC, SC, CP diets than in rats fed the HF diet. Total lipid level was lower in rats fed the SC and CP diets than in rats fed the HF diet. Increment of triglyceride level and decrement of phospholipid level in rats fed the HF diet were recovered significantly by the CSC, SC and Cf diet. Our results indicate that chitosan-soybean curd prepared under the commercial processing condition may provide the beneficial effect on lipid metabolism even though its effect didn't show any significant difference compared to that of commercial soybean curd under the present experimental conditions.

• Asian-Australasian Journal of Animal Sciences
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• v.27 no.11
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• pp.1638-1643
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• 2014

This study was conducted to compare carcass characteristics and physico-chemical meat quality in two different genotype ducks raised under identical feeding and rearing conditions. A total of ninety 1-d-old Korean native ducks (KND, n = 45) and commercial meat-type ducks (Grimaud, n = 45) were fed same experimental diets during 56 d and 42 d, respectively to obtain similar slaughter weights. The experimental diet for starter period contained 20% crude protein (CP) and 2,900 kcal nitrogen corrected true metabolizable energy (TMEn)/kg of diet and that for grower period contained 17% CP and 3,050 TMEn/kg of diet. Average daily gain and feed efficiency of KND were inferior to those of commercial meat-type ducks (p<0.05). Carcass weight was not different between two genetically different ducks, but carcass yield of KND was significantly higher (p<0.05) than that of commercial meat-type ducks. There were no significant differences in cooking loss and pH of breast meat between two genetically different ducks, but water holding capacity of KND was significantly higher than that of commercial meat-type ducks. The linoleic acid and total polyunsaturated fatty acid of breast meat from KND were significantly higher (p<0.05) than the corresponding part from commercial meat-type ducks. Significant differences were detected in water holding capacity and the content of linoleic acid and polyunsaturated fatty acid, which were significantly higher in KND, whereas growth performance tended to be superior in commercial ducks. At the market weight, the meat from KND was judged to have better qualities with regard to higher water holding capacity and greater content of polyunsaturated fatty acid compare with meat from commercial meat-type duck.

• Nutrition Research and Practice
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• v.2 no.1
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• pp.13-16
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• 2008

Taurine supplementation has been shown to have an effect on lowering blood lipids in ovariectomized (OVX) rats. It therefore seemed desirable to find out whether the beneficial effect of taurine on OVX rats fed calcium-deficient diet could also be reproduced. Forty female Sprague-Dawley rats were divided into two groups. One group was OVX and the other group received a sham operation (Sham). Each rat group was further divided into the control diet and the taurine supplemented (2.0g/100g diet) diet group. All rats were fed on calcium-deficient diet and deionized water ad libitum for 6 weeks. Plasma and liver lipids were determined by using commercial kits. LDL-cholesterol concentrations were estimated with the equation of Friedewald et al. (1972). There were no significant differences in body weight gain and food intake between the control and taurine group within Sham and OVX groups, but body weight gain, food intake, and food efficiency ratio was higher in the OVX group. Concentrations of plasma total cholesterol, triglyceride, LDL-cholesterol were significantly lower in the taurine fed group of OVX rats fed Ca deficient diet, while HDL-cholesterol concentration was increased in the taurine fed group. Therefore, in this study, we examined whether taurine also prevented hypercholesterolemia induced by ovarian hormone deficiency in ovariectomized rats when they were fed a calcium-deficient diet. These results indicate that taurine may have some beneficial effects on hypercholesterolemia and hypertriglyceridemia in OVX rats fed calcium-deficient diet.

• Korean Journal of Rural Living Science
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• v.5 no.2
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• pp.125-134
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• 1994

This study was performed to observe the effects of dietary fat levels and sources on lipids contents and cellularities of liver, brain, and adipose tissue of early weaned rats. Male Sprague-Dawley rats were prematurely weaned from postnatal 17th day with the experimental diets differ in fat levels : low(5%), medium(10%), high(20%) and fat sources : butter, soybean oil, butter＋ soybean oil. On the postnatal 29th day, contents of total lipid, triglyceride, cholesterol and phospholipid of serum, liver, brain and adipose tissue were determined, and DNA was determined to assess the cell growth. Rats early weaned fed high fat diet showed lower total lipid and triglyceride levels in serum and liver than those fed medium or low fat diet Rats early weaned fed high fat diet had adipocytes of fewer number, but larger size than those of rats fed low or medium fat diets. Rats early weaned fed soybean oil diet had more adipocytes thu those fed butter diet. Rats normally weaned to commercial chow diet showed lower total lipid, triglyceride, and cholesterol levels in serum and liver, had fewer adipocytes than all early weaned rats except for rats fed high fat-butter diet. These results suggest that high fat-butter diet is ideal weaning diet at early weaning.

• Proceedings of the Korea Society of Poultry Science Conference
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• 2000.11a
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• pp.108-110
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• 2000

A 12-w feeding trial was conducted with 600 38-wk-old layers to evaluate the nutritive value of high oil corn(HOC) in layer diets. For the control, a commercial corn-soybean meal basal diet was used. An iso-calorie diet(HOC-ISO) was prepared replacing corn with HOC in the control diet. In addition a third diet was prepared by simply replacing corn with HOC on 1:1 basis to give a high energy diet(HOC-1:1). There were 5 replicates per treatment, and 40 birds per replicate. Birds were housed in an open-sided layer house equipped with wire cages. Feed and water were provided ad libitum, and 17L:7D lighting program was adopted. No significant difference (P>0.05) was found among dietary treatments in laying performance. Also physical qualities of eggs were not significantly affected by the feeding of HOC. Although not significant, HOC-ISO tended to improve the laying rate during the summer. The HOC feeding significantly increased the polyunsaturated fatty acids contents in egg yolk, especially the linoleic acid The AME contents of Chinese yellow corn, U.S. corn, and HOC were 3177, 3158 and 3387 kcal/kg respectively.