• Korean Journal of Poultry Science
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• v.39 no.4
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• pp.305-310
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• 2012

This work was carried out to investigate performance and carcass yield of large-type broilers at different stocking densities. Treatments were T1 (9.1 birds/$m^2$), T2 (10.3 birds/$m^2$) and T3 (11.5 birds/$m^2$) by the stocking density. Four hundred eight 1-day-old Arbor Acre broiler chicks were used for six weeks (starter, 0~1 wks; earlier, 1~3 wks; finisher, 3~6 wks) and divided into 3 treatments (4 replications/treatment, 30, 34 or 38 birds/replication). Research indexes were rearing viability ratio, body weight, body weight gain, feed intake, feed conversion ratio, production efficiency factor and carcass ratio. Rearing viability ratio (%) was 89% or more for all treatments and there was no significant difference on weekly rearing viability ratio (%). Body weight of T2 was the greatest and that of T3 was the lowest at 1 weeks old (P<0.05). Body weight gain of T2 was the greatest and that of T3 was the lowest at 0~1 weeks old (P<0.05). However, body weight gain of T3 was the greatest and that of T1 was the lowest at 1~2 weeks old (P<0.05). Body weight gain of T2 was the greatest as 3,031 g among treatments at 0~6 weeks old (P<0.05). Feed intakes of T1, T2 and T3 were 1,417 g, 1,265 g and 1,355 g, respectively, and that of T1 was the greatest among treatments (P<0.05). There was no significant difference on body weight, body weight gain and feed intake. Feed conversion ratio of T1 was the greatest among treatments at 1~2 wks, 3~4 wks and 0~6 wks old (P<0.05). Production efficiency factors of T1, T2 and T3 were 363.5, 388.3 and 358.3, respectively, and there was no significant difference among treatments. Wing meat ratio of T1 was the higher compared to other treatments at the age of 4 wk (P<0.05). There was no significant difference on carcass ratio and partial meat ratio among treatments. Neck meat ratio of T2 was the lowest among treatments (P<0.05). This result may provide the standard data of different stocking densities for large-type broiler and the further research is needed.

• Asian-Australasian Journal of Animal Sciences
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• v.18 no.11
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• pp.1552-1556
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• 2005

The UCPs are members of the mitochondrial inner membrane transporter family, present in the mitochondrial inner membrane. Their main function is increasing the energy expenditure via diminishing the resulting production of ATP from mitochondrial oxidative phosphorylation instead of yielding dissipative heat. They are associated with the metabolism of fat and regulation of energy expenditure. The UCP gene can be viewed as the candidate gene for chicken fatness. In the present study, RT-PCR and Northern Blot methods were developed to investigate the expression of the UCP gene in ten tissues including heart, liver, spleen, lung, kidney, gizzard, intestine, brain, breast muscle and abdominal fat of chicken. The results of both RT-PCR and Northern Blot methods showed that the UCP gene expressed specific in breast muscle. The expression levels of UCP gene in breast muscles from egg-type and meat-type chickens of hatching, 2, 4, 6 and 8 wk of age were detected by RT-PCR assay and results showed that the expression levels of UCP gene were related to breeds. Expression level of UCP gene in layers was higher than that in broilers at various weeks of age except at 6 wk. The UCP gene's expression was higher at 6 wk and had no significant difference among other weeks of age in broilers; in layers the expression level of UCP gene had no significant difference among weeks of age. The experiment results also showed that insulin could increase the expression level of UCP gene by 40% compared with control group.

• Journal of Nutrition and Health
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• v.38 no.3
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• pp.251-258
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• 2005

The purposes of this study were to conceptualize the Home Meal Replacement (HMR) in Korea and to gather professionals' opinions of prospect and task for HMR industry in Korea. A total of 67 experts participated in a three round survey by Delphi technique, which was used to integrate and share the each expert's professional idea. According to the result, HMR was translated into 'Gajeongsiksa daeyongsik' in Korean and given definition to 'a meal taken directly or through brief cooking process at home by purchasing ready to eat or ready to end-cook type of food'. As the result of categorizing HMR products of Korean food, 'I. Ready to eat' such as side dishes, kimchi, salad, sandwich, kimbab, and so on and 'II. Ready to heat' such as rice, porridge, retort food (soup, broth, curry, spaghetti, etc.), frozen pizza, grilled food, jabchae, instant soup, and so on were construed in a limited sense of the HMR. In addition, 'III. Ready to end-cook' such as frozen dumpling, frozen pork cutlet, seasoned meat, powder-type soup, and so on as well as these two kinds were interpreted in a broad sense of the HMR. In the prospect of HMR industry in Korea, the Korean HMR industry would develop continuously accompanied by increasing of consumers using HMR products. Introduction and generalization of HMRs would serve the convenience for meal preparation and then influence the change of home meal pattern. Nevertheless, it was concerned about that using HMRs might have limitation on solving the problems of dietary life including irregular meal, skipping a meal, and so on and influence the nutrition imbalance. For the development of HMRs, developing various menu and the packaging materials for HMR products, constructing the thorough sanitary management, and strengthening R & D for the HMR of Korean food were the future tasks in Korean HMR industry.

• Journal of the Korean Home Economics Association
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• v.42 no.10 s.200
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• pp.1-10
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• 2004

The purpose of this study was to investigate what kinds of foods university students consume, how often they go out eating, and the regularity and amount of their meals. A questionnaire survey was conducted on 600 university student (home with Parents $40.8\%$: house of relatives $5.5\%$: boarding with cooking $43.3\%$: dormitory $10.3\%$). The main results are as follows: PIBW(percent ideal body weight) was under weight($49.2\%$), normal weight($40.7\%$), over weight($6.0\%$) and obese($4.2\%$). Many students had breakfast irregularly(boarding with cooking: $81.2\%$> home with parents: $71.8\%$> dormitory: $54.8\%$> house of relatives: $54.5\%$). Students who had a meal of average size were $32.5\%$(for breakfast), $61.3\%$(for lunch), and $39.5\%$(for dinner). Students who were home with parents and boarding with cooking had more eating for breakfast and lunch than those who were house of relatives and dormitory. Students who were home with parents and dormitory students ate more often milk, milk products, and kimchi than house of relatives and boarding with cooking students. Home with parents, boarding with cooking and dormitory students ate more often meat, milk, bread, fast food, and instant noodles than house of relatives students. Home with parents, house of relatives, and dormitory students ate more often fish, dried anchovy, and vegetables than boarding with cooking students. Dormitory students ate more often snacks, such as alcohol and fruits, than home with parents, house of relatives, and boarding with cooking students.

• Parasites, Hosts and Diseases
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• v.30 no.4
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• pp.263-268
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• 1992

A study was presented on the anisakid larvae in Astroconger myriaster which were caught at the Southern Sea and waled at Pusan area. The nematodes were morphologically classified into Anisakis sp. and Centracgecum sp. after fixation in 70% ethanol and clearing in lactophenol. Total of 1, 768 larval anisakids were collected from 259(67.8% positive rate) out of 382 examined A. myriaster. Total 642 larvae of Anisakis sp. were obtained from 94 (24.6%) and 1, 126 Ccntracaecum sp. were recovered from 165 (43.1%) fish. The average number of worms per infected fish was 4.6. The infection rate increased according to the length of fish, and all of the fish over 71 cm were found infected. The numbers (proportions) of recovered worms by the organs were 1, 440 (80.5%) in the omentuin, 166(9.4%) in the intestine, 107(6.0%) in the stomach, 32(1.8%) in the skin, 18(1.0%) in the muscle, 13(0.7%) in the liver, and 2(0.1%) in the head. The larvae in the muscle may infect the humans who are enjoying raw sliced meat of the fish.

• The Korean Journal of Community Living Science
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• v.26 no.1
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• pp.39-49
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• 2015

This study evaluates nutrition knowledge, dietary behaviors and food group acceptability based on a sample of 514 of new employees in Gyeonggi area. Among the respondents, 70.6% of male, and their age was 30.7 Most were college graduates (94.9%) and unmarried (86.3%). Based on the BMI males tended to be overweight, whereas females, normal. In terms of health consciousness based on five-point Likert-type scale, the average score for the health status was 4.18 indicating good health, and health attention was 4.88 indicating high health attention. Dietary behaviors were evaluated using five-point Likert-type scale. According to the results, the total score for regular diet based on 5 items was 9.6; that for a balanced diet based on 7 items was 22.2; and that for practical diet action based on 8 items was 22.3. That is, the respondents were on an irregular diet but tried to balanced diet through appropriate diet action. Food acceptability was evaluated using a five-point Likert scale ranging from "strongly dislike(1)" to "strongly like(5)". The score of meat group was 3.67; that for the fish 3.43; and that for the vegetable group was 2.86. Females were slightly more like to accept fruits 3.60 than males 3.48;(p<0.05). The total score for nutrition knowledge based on 35 items was 20.5. A balanced diet was correlated with egg acceptability (p<0.01); energy-related knowledge with confectionery preferences (p<0.05); and vitamin knowledge, with snack affinity (p<0.05). Health attention was negatively correlated with seafood preferences for male(p<0.05) and with snacks for females(p<0.05). The respondents were strongly interested in and aware of their health, but this did not lead to their food preferences. These results suggests that dietary habits can lead to nutritional balance for maintaining the health of employees.

• Food Science of Animal Resources
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• v.30 no.4
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• pp.655-660
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• 2010

This study aimed to identify genetic polymorphisms associated with fatty acid composition in Hanwoo beef. In this study, three SNPs (-867G>C, -877Gdel and 878T>C) were detected in SCD gene by DNA sequencing and PCR-RFLP. Statistical analysis revealed that 878T>C SNP was significantly associated with total saturated (p=0.016), unsaturated (p=0.016), and monounsaturated fatty acid (p=0.026) composition. However, the other two SNPs (-867G>C and -877Gdel) that are detected in the regulatory region of the SCD gene have no association with the fatty acid composition of Hanwoo meat. The 878C (alanine type) allele was found to be associated with 2.2% higher monounsaturated fatty acid, 1.5% lower saturated fatty acid, and 1.4% higher unsaturated fatty acid content than those associated with the 878T (valine type) allele. These results indicate that the non-synonymous SNP (878T>C) in the SCD gene could be a causal mutation that contributes to the MUFA variation in Hanwoo beef.

• Asian-Australasian Journal of Animal Sciences
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• v.26 no.5
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• pp.705-710
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• 2013

This study was conducted to determine the effects of three different fat sources and their combination on growth performance, carcass traits and intestinal measurements of broiler chickens reared to 42 d of age. Two hundred day-old male broiler chicks (Ross 308) were randomly assigned to one of five treatments with four replicates of 10 chicks based on a completely randomized design. The dietary treatments consisted of 4% added fat from three different sources and their combination as follows: T, diet containing 4% tallow; CO, diet containing 4% canola oil; SFO, diet containing 4% sunflower oil; TCO, diet containing 2% tallow+2% canola oil; TSFO, diet containing 2% tallow+2% sunflower oil. Dietary fat type affected significantly BW and gain as well as feed efficiency in birds fed the TCO diets compared with those fed the other diets. Dietary fat type also modified meat yield, resulting in a higher breast and drumstick yields in the birds fed TCO and TSFO diets, respectively. Most of internal organ relative weights and small intestine measurements were not influenced by dietary treatments, except for the abdominal fat pad weight that was lower in birds fed SFO and for small intestinal length that was influenced by fat source. Results from the current study suggested that the supplementation with a combination of vegetable and animal fat sources in broiler diet supported positively growth performance and carcass parameters.

• Asian-Australasian Journal of Animal Sciences
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• v.19 no.1
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• pp.42-47
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• 2006

This study was conducted to investigate the efficacy of surface spraying of antimicrobial solutions, oil and application of both on performance of broiler chicken under heat stress and reared on leaves and ground corn cobs as two alternative bedding materials. Six hundred seventy five day-old straightrun Arian broiler chicks were randomly assigned to 45 pens (at density of $0.09m^2/bird$) in an open sided partially-controlled shed. Three bedding materials viz. wood shavings (WS), ground corn cobs (GCC) (1.5 cm in length) and leaves were subjected to surface spraying of oil ($0.4L/m^2$ animal food grade sunflower oil), anti microbial solutions (3%) and mix treatment of both. Data on performance traits, incidence of breast and food pad lesions and litter characteristics were gathered and analysed in an appropriate factorial arrangements. Body weight at 56 d, feed intake up to 14 d, litter moisture at 28 d, litter pH at 14 d and litter temperature at 14 and 56 d were significantly influenced by litter type (p<0.05). Litter treatment revealed significant impact on body weight at 28, 42 and 56 d, feed intake during 29-42 and 1-42 d, mortality up to 56 d, litter temperature at 28 and 56 d, and litter pH at 28 and 56 d. Leaves and ground corn cobs have shown good potential as alternative bedding materials for rearing broilers. Surface spraying of antimicrobial solutions, oil and applying both were not effective tools to promote the broiler's health and performance. Meat type poultry growers and integrators are considered as primary audiences of the results achieved.

• Journal of the Korean Society of Food Culture
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• v.28 no.6
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• pp.553-561
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• 2013

This study examined the food purchasing behavior of rural housewives in Bibong-myeon, Hwaseong. The survey targeted grocery shopping for the home, in particular by housewives. The type of grocery store frequented, age, socioeconomic factors, and ease of purchase were compared with interests in health foods. One super supermarket (SSM), three supermarkets (SM), and four convenience stores were examined in the research area, whereas a large-scale discount store and grocery stores were also examined outside the research area. The grocery store visiting rate was 61.5% in the research area and 38.5% in the other area. The SSM (62.7%) and SM (29.9%) in the research area and LDS (57.1%) and SSM (16.7%) in the other area were most frequently visited. Major purchasing products greatly differed according to the grocery store type. Major foods purchased in the SSM were grain, meat, and fish. Major foods purchased in the LDS and SM were processed products and vegetables, respectively. The LDS visiting frequency was 41.7% for 2-3 times per month and 41.7% for <1 time per month. The means of transport were mostly by private car (87.5%), whereas the SSM was visited 1-2 times per week 53.1% of the time by foot. In addition, various grocery stores are absent in rural areas and it is therefore important to find other methods to assess the food environment of rural areas. In future research, it will be necessary to design various ways to perform food environment research.