• Journal of The Korean Society of Grassland and Forage Science
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• v.16 no.3
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• pp.230-234
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• 1996

This study was conducted to compare the intake, digestibility and utilization of nitrogen by goats consuming high and low tannin diets. Low tannin diets were 100% grass(GS) and 50% grass + SO% alfalfa (GA), and high tannin diets were 50% grass + 50% lespedeza(GL) and 50% grass + 50% oak browse(G0). Dry matter intake did not differ among all diets, but digestibility of dry matter, cellular constituents, NDF and ADF showed slightly lower for high tannin diets(GO) than low tannin diets(GS and GA), but those were not differ between GL and low tannin diets with the exception of ADF digestibility. Total faces and urinary N were lower for high tannin diets than for low tannin diets. Apparently digested N was high in GA diets, but low in GO diets(P

• Korean Journal of Poultry Science
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• v.25 no.2
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• pp.71-77
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• 1998

This study was investigated to study split diets on laying performance and eggshell quality with Hy-Line brown layers 43 weeks old for 12 weeks Layers fed a conventional diet and split diets were divided into morning and afternoon diet. The conventional diet contained 3.4 % Ca was given constant nutrients all day. Hens of the split diets fed morning diets contained 0.5 % Ca constantly and afternoon diets contained 5.9, 8.0, and 10.0 % Ca in T1to T3. Split diets were given morning diets from 04:00 to 15:00 and afternoon diets 15:00 to 21 :00 alternately. Egg production, egg weight, and egg mass were not significantly different among diets. Abnormal eggs decreased in T1 and T2, but no significantly differed(P>0.05). Feed intake decreased in all of split diets compared to control diets (P <0.05). So, feed conversion ratio also improved in split diets(P<0.05). ME and CP intake decreased in T2 and T3, and Ca intake increased in proportion to Ca content of diets(P<0.05). ME and CP requirements per kg eggs decreased in the split diets, and that of Ca increased. Although there were not different significantly, egg shell strength and thickness improved slightly in T2 at 12 week. Yolk color, haugh unit and yolk index were not different among diets. Therefore, we concluded that split diet feeding to layer could improve feed and economic efficiency with normal egg production.

• Journal of The Korean Society of Grassland and Forage Science
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• v.15 no.4
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• pp.291-296
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• 1995

This study was conducted to determine the influence of alfalfa supplementation on intake, digestibility nitrogen and energy utilization in Korean native goats fed oak browse. This experiment was conducted by total collection method in laboratory, 1994. Diets included 100% oak bmwse(control), 75% oak browse+ 25% alfalfa and 50% oak browse + 50% alfalfa. Alfalfa supplemented diets were slightly higher CP(PO.O5). lignin (P<0.05) and tannin(P<0.05) contents than those control diets. Increasing levels of alfalfa supplementation, dry matter intake slightly increased, but no differences were observed in all diets. Digestibility for dry matter and cellular constituents showed higher for alfalfa supplemented diets than control diets(P<0.05), but NDF and ADF digestibility were similar for all diets. Alfalfa supplemented diets furnished higher dietary N, apparently digested N and retained N than did the control diets(P<0.05). Consumed energy slightly increased with increasing levels of alfalfa supplementation(P>0.05). DE was high(P<0.05) in alfalfa supplemented diets. but ME was similar for all diets. As above results, oak browse diets alone did not supply N and energy in excess of NRC recommended allowance for goats. Hence, goats fed oak browse with supplementation of protein sources such as alfalfa will be need to provides adequate nutrients.

• Journal of The Korean Society of Grassland and Forage Science
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• v.15 no.4
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• pp.297-302
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• 1995

The objective of this experiment was to compare the dry matter intake, nutrients digestibility, nitrogen and energy utilization of hehage among the orchardgrass(OG) pure, orchardgrass(OG)-red clover(RC) mixture and complex rnixtures(C. mix) by Korean native goat. The results obtained were surnmerized as follows: 1. Crude protein(CP) content was higher in OG-RC and C. Mix diets than in OG pure diets(P<0.05). NDF content was higher in OG pure diets than other diets(P<0.05). But ADF, Lignin contents and gross energy did not differ among all diets. 2. Dry matter intake by Korean native goat tend to be high in OG-RC diets, and low in OG pure diets. But there was no significant difference statistically. Dry matter and cellular constituents digestibilities were higher for OG-RC and C. Mix diets than OG pure diet, but CP and NDF digestibilities were no significant difference among diets. 3. The amount of nitrogen consumed amount by Korean native goat in the OG-RC diet was higher than other diets. But, due to largely relative urinary and fecal nitrogen loss, Apparrently digested nitrogen and retained nitrogen percents were not significant difference among diets. 4. The amount of energy consumed by Korean native goat in OG-RC diet was higher than other diets. But, due to largely relative urinary and fecal energy loss, digestable energy percent was lower than C. Mix diets. But.metabolic energy percent was no significant difference among diets. Therefore, there was no significant differences among sward types for the utilization of nitrogen and energy by Korean native goats.

• Korean journal of food and cookery science
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• v.22 no.6 s.96
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• pp.799-807
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• 2006

This study was designed to assess the perception and use of weaning diets and to serve as a guideline of processed weaning diets through a survey focused on the Gwangju-Jeonnam regions. The following results were obtained. Most subjects mixed 'home-made' and 'commercial' weaning diets and considered weaning diets as 'a diet for supplementing insufficient nutrition'. The most frequently used type of weaning diet was 'a kind of gruel with vegetables or meat', followed by 'boiling powder with water' and 'grinding or crushing fruits'. Two thirds (68%) of subjects had experienced buying weaning diets, mainly a powder type. The most common reason to buy weaning diets was 'troublesome', followed by 'excellent nutrition', 'convenient to go out', and 'don't know how to make'. The following results according to factors were found. The types of provided and of weaning diets were significantly different by age; the understanding of weaning diets, by education and mothers' employment; and where to get information about weaning diets, by economic status. The highest request for developing weaning diets was a type of 'powder' and 'gruel', and the highest cooking type was 'adding boiling water', followed by 'a semi-cooking product' and 'a finished product'. 'Retort pouch' package, a 'single' package unit, and 'keeping cold' were also requested by the participants. A desirable package unit in developing weaning diets was significantly different by mother's employment; the cooking type of product, by economic status; a way to keep product, by mother's employment; and package types, by education and economic status. When weaning diets were made by environmentally friendly agriculture, 69.5% of subjects were willing to purchase them. With the increase in economic status, education, and employment rate, the use of weaning diets on the market will increase. For this reason, correct nutrition education is needed. With the increasing demand for environmentally friendly agriculture, a variety of weaning diets should be developed to meet this demand.

• Journal of the Korean Dietetic Association
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• v.4 no.2
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• pp.200-211
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• 1998

Most of college women are interested in their appearances, and those whose body weights are normal or even underweight try to lose weight. Many methods for weight control diets practiced by college women are unsound and irrational so that some side-effects should be watched out. The present study was aimed to investigate methods of diets, food habits, behaviors, and side effects of weight control and to suggest sound weight loss schemes for college women. The subjects were 353 college women living in Taegu and Kyung Buk area, comprising 178 women who have tried weight control diets and 175 women who have not tried diets. The items included in questionnaires were food habits, food behavoirs, food frequency, physical activity status, 24-hour daily activity record, height, weight, etc., and the survey was conducted in September 1997. There was no difference in body mass index between college women who have tried diets(20.1$\pm$2.26) and women who have not tried diets(19.3$\pm$1.58), and 24.2% of those who have tried diets had body mass index under 19. The leading reason for diets was to make better fitting for costumes(67%). While women who have tried diets also tried to exercise more, they tended to overeat than women who have not tried diets. Mean of food habit scores(9.33 vs 9.32) which corresponded to "poor" habit and food frequencies were not different with or without experiences of diets. This indicated that diets were not related to actual changes of food habits and food intakes. Diet methods used frequently by college women were relying on special diet foods(25.4%), fasting(24.9%) and exercise(22.6%). Trying both exercise and diet was practiced by only 5.1% of the subjects who have tried diets. The duration time of diets was mostly in the range of 1 week to 1 month, and the longer diet period was, the more weight loss was. The frequent side effects due to diets were anemia(41.8%) and enervation(23.7%). Activity coefficients were lower in those who have tried diets(1.38$\pm$0.13) than those who have not tried diets(1.41$\pm$0.19). Women who have tried diets spent more time on reading newspapers and magazines and on watching TV. This study indicates that college women who have tried diets practiced irrational diets for weight reduction and experienced undesirable side-effects. Therefore scientific and systematic weight reduction programs accompanying balanced diets and proper exercise with behavior changes should be developed.

• Journal of The Korean Society of Grassland and Forage Science
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• v.18 no.4
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• pp.317-322
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• 1998

This study was conducted to compare the DM intake, the digestibility, and the utilization of nitrogen and energy of Korean native goats, when fed on orchardgrass supplemented with alfalfa or birdsfoot trefoil. Experimental diets included three treatments: orchardgrass(OG) 100%, orchardgrass 6%+alfalfa(AA) 40%(OG+AA), and orchardgrass 60%+birdsfoot trefoil(BT) 40%(OG+BT). The CP content was higher for OG+AA and OG+BT diets than for OG diets(P<0.05). The NDF content was high in OG diets(P<0.05) and the lignin content was high in OG+BT diets(P<0.05), but the ADF content did not differ among all diets. The DM intake and the digestibility of OM and cellular constituents were higher for OG+AA diets than for OG diets(P<0.05), but the NDF and ADF digestibility were not significant difference among all diets. The apparently digested N was higher for OG+AA diets than for other diets(P<0.05). However, the retained N % and biological value were higher for OG+BT diets than for OG diets(P<0.05), but those were not differ between OG+AA and OG+BT diets. On the other hand, the utilization of DE and ME did not show the difference among all diets. Based on the results, the utilization of nitrogen and energy was more improved for legume supplemented diets(AA, BT) than for OG diets(P<0.05). Furthermore, the utilization of nitrogen was slightly more improved for OG+BT diets than for OG+AA diets, but the significantly difference was not observed.

• Journal of Nutrition and Health
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• v.30 no.9
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• pp.1073-1083
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• 1997

This project was to compare the effects of consuming diets incorporating soybean oil , canola oil, ad palm oil on blood serum lipid patterns and fecal fat excretion in healthy human adults. The project was composed of three studies that were run concurrently . Each study was composed of a 4-day pre-trial period and two , 14-day experimental periods arranged according to a cross-over design. During the pre trial period, subjects were allowed to eat self-selected diets. During the experimental period , subjects were asked to eat constant, laboratory controlled diets in which sources of dietary fat varied . Thirty healthy , young adult subjects were fed a laboratory controlled diet incorporating soybean oil, canola oil, and palm oil. Test oils provided approximately 20% of the total dietary calories form all sources. Total dietary fat from all sources was approximately 30% of consumed calories. The highest serum total cholesterol , LDL cholesterol, VLDL cholesterol , and triglyceride values occurred when pam oil diets were eaten. However, feeding on palm oil diets resulted in the same HDL cholesterol content as with soybean oil or canola oil diets. Soybean oil diets produced numerically lower blood serum total cholesterol , LDL cholesterol, and triglycerides, and numerically higher HDL cholesterol and VLDL cholesterol than did those with canola oil. Fecal fat excretion was numerically lower with soybean oil diets than with canola diets. The highest fecal fat excretion occurred when palm oil diets were eaten.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.47 no.4
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• pp.390-398
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• 2014

We conducted an 8-week feeding trial to evaluate dietary lipid sources on the growth performance and body composition of juvenile river puffer fish Takifugu obscurus. Nine experimental diets were formulated with fishmeal as the major protein ingredients, providing 50% crude protein. The experimental diets contained either beef fallow (BF), soybean oil (SO), rapeseed oil (RO), or linseed oil (LO). Each of these diets was then supplemented or not with 0.5% n-3 HUFA (BFH, SOH, ROH, and LOH), resulting in a total of eight experimental diets. The control diet contained fish oil (FO) as the lipid source. Fish averaging $10.3{\pm}0.03g$ were fed the experimental diets in randomly selected triplicate groups for 8 weeks. Weight gain and feeding efficiency of fish fed the FO and SOH diets were significantly higher than those of fish fed BF or RO (P<0.05), but these diets did not differ significantly from the other diets. The protein efficiency ratio of fish fed the SOH diet was significantly higher than that of fish fed the BF, SO, or RO diets (P<0.05), but these were not significantly different from the other diets. The specific growth rate of fish fed the FO and SOH diets was significantly higher than that of fish fed the BF diet (P<0.05). Whole body DHA and n-3 HUFA contents of fish fed the FO diet were significantly higher than those of fish fed the SO, RO, or LO diets (P<0.05), but were not significantly different from the other diets. These results indicate that soybean oil and linseed oil could replace up to 100% of fish oil in the diet containing 60% fishmeal for river puffer fish.

• Journal of the Korean Applied Science and Technology
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• v.1 no.1
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• pp.57-64
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• 1984

The study was performed to understand the effects of perilla and pine nut oils on hypercholesterolemia in cholesterol-fed male rats. All rats fed with the experimental diets for 3 weeks were decapitated to take serum. From the serum, the levels of total cholesterol, triglyceride, HDL-cholesterol, free cholesterol, phospholipid, lipoprotein and glucose were measured, and the results were summarized as follows. 1. The experimental diets supplemented with perilla and pine nut did not influence on the body weight and on amount of food intake, but decreased significantly total cholesterol level by the rate of 22-30% 2. The perilla diets decreased the ${\beta}-/{\alpha}-lipoprotein$ value from 0.99 to 0.50-0.51, but the pine nut diets decreased to 0.68-0.69. 3. The 10% diets of perilla and pine nut decreased the triglyceride concentration by the rate of 11-14%, but it was not significant difference. 4. The perilla diets increased the HDL-cholesterol level by the rate of 53-72%, and the pine nut diets 72-92%, but both of these diets did not influence on the free cholesterol concentration. 5. The perilla diets decreased phospholipid concentration by the rate of 20-23%, but it was not significant difference. 6. The diets of 10% perilla and 5% pine nut decreased significantly the free fatty acid concentration by the rate of 48% and 34% respectively. 7. The diets of 10% perilla and pine nut decreased a little the glucose level, but it was not significant difference.