• 한국가금학회지
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• 제50권1호
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• pp.31-39
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• 2023

The objective of this study was to investigate the effect of exogenous protease supplementation in diets formulated with poultry by-product meal on growth performance, small intestine magnitudes, and meat physiochemical characters in broiler chickens from 21 to 35 days post-hatch. A total of 120, one-day-old "Arbor Acres Plus" broiler chickens (male: female - 50:50) were allocated one of two dietary treatments to give six replicates and ten birds per cage. Two dietary treatments included a control diet (CON) and a diet supplemented with protease (CON+Pro). At day 35, body weight and feed intakes were measured to calculate the feed conversion ratio for the entire experiment period. Two birds from each pen were euthanized to measure the relative lengths and relative weights of three small intestine sections and meat samples were collected for physiochemical characteristic analyses at 35 days post-hatch. Exogenous protease supplementation did not influence (P>0.05) growth performance but showed a tendency to improve FCR (P=0.082). Protease supplementation showed a tendency to reduce proximal small intestine length (P=0.091). Broilers offered dietary treatments influenced minced meat color where protease supplementation resulted in lower CIE b^* (P<0.001) colorimetric value for yellowness and showed a significant trend (P=0.059) on reducing meat redness CIE a^*. In conclusion, the addition of exogenous protease to a broiler diet formulated with poultry by-product meal did not affect the growth performance, small intestine magnitudes, and meat physiochemical parameters (except CIE b^*) in broiler chickens.

• 한국양식학회지
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• 제18권4호
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• pp.231-235
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• 2005

본 연구는 치어기 넙치의 여름철 적정 사료공급 횟수를 조사하기 위해 평균무게 3.7g의 실험어를 300${\iota}$ 원형수조에 각 수조당 80마리씩 3반복으로 무작위 배치하여 사료공급 횟수를 달리하여 6주간 사육하였다. 사료공급 횟수는 2일 1회(09:00), 1일 1회(09:00), 1일 2회(09:00, 18:00), 1일 3회(09:00, 13:00, 18:00) 및 1일 4회(09:00, 12:00, 15:00, 18:00)로 설정하였으며, 매회 실험어가 먹을 때까지 만복공급 하였다. 생존율은 2일 1회 사료공급구가 가장 낮게 나타났으며, 1일 1회 이상의 사료공급구간에서는 유의적인 차이가 나타나지 않았다. 증체율 및 일일사료 섭취율은 사료공급횟수가 증가함에 따라서 증가하였지만, 1일 2회 이상 사료를 공급한 실험구들 간에는 유의한 차이가 없었다. 사료효율 및 단백질 전환효율은 사료공급횟수에 유의한 영향을 받지 않아 모든 실험구간에 차이가 없었다. 사육실험 종료 후, 전어체의 수분, 단백질, 지방 및 회분함량은 모든 실험구에서 유의적인 차이가 나타나지 않았다. 이상의 결과로 볼 때, 3.7${\~}$19.0g 넙치 치어 시기의 여름철(수온 $24^{\circ}C$) 배합사료의 적정공급 횟수는 사육관리 시간 및 비용 등 경제적인 측면을 고려하였을 때 1일 2회일 것으로 사료되며, 이때 사료섭취율은 $2.63{\~}2.78\%$가 적당할 것으로 판단된다.

• Asian-Australasian Journal of Animal Sciences
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• 제15권2호
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• pp.254-265
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• 2002

Soybean meal (SBM) is a major protein source in poultry feeds and one of the best quality ingredients because of the relatively high protein content, good amino acid profile and bioavailability. But soybean meal quality is largely dependent on the processing technology and origins. In this experiment, effects of three different soybean meals were evaluated in layer (experiment 1) and broiler (experiment 2). Soybean meal sources used in the experiments were the US-originated dehulled soybean meal (USDHSBM), India-originated non-dehulled soybean meal (India SBM) and Brazil-originated non-dehulled soybean meal (Brazil SBM). Experiment 1 was conducted during growing and laying periods and evaluated the interactive effects of soybean meal sources according to feeding periods on growth performance and egg quality. Experiment 2 was conducted during growing period (day 1-35) and finishing period (day 35-42). The growth performance was measured for the same periods and any possible interaction between soybean meal origins and crude protein levels was also studied. In experiment 1, chicks fed India SBM utilized feed more efficiently (p<0.05) than those fed Brazil SBM from day 29 to day 42. The body weights of layers during the laying period had no relation to egg production. But egg weights were significantly heavier in all the USDHSBM fed groups than other groups (p<0.001) and depended on feed protein source during growing period (p<0.001). The average egg weight of the USDHSBM fed group scored the highest value (65.4 g), followed by the Brazil SBM fed group (62.1 g) and India SBM fed group (62.1 g). There was an effect of interaction between origins of soybean meal fed group in growing and laying period on eggshell color (p<0.01). Eggshell was significantly stronger in the USDHSBM fed (for growing period) groups than other groups (p<0.05) on $31^{st}$ week. Haugh's unit (HU), albumin index and yolk index of the USDHSBM fed group in growing stage were significantly superior (p<0.001) to other groups. In experiment 2, for the 7-week, chicks on the India SBM group gained less (p<0.001) weight than other groups. While daily gain of India SBM chicks was not affected by dietary crude protein level, those of the USDHSBM and Brazil SBM chicks were linearly increased as dietary crude protein level increased from 18% to 20%. The gain per feed ratio of the USDHSBM group was the highest (0.585), followed by the Brazil SBM group (0.568) and India SBM group (0.550) (p<0.01). Therefore, in this experiment, the use of USDHSBM with excellent protein quality and amino acid digestibility could be of advantage to the economic production of layer and broiler.

• Asian-Australasian Journal of Animal Sciences
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• 제11권6호
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• pp.708-712
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• 1998

One hundred and eighty, 1-day old broiler chicks, randomly divided into 15 replicates of 10 brids each were employed to six treatment rations (A, B, C, D, E and F). Rapeseed meal (RSM) with or without treatment was incorporated in the rations at 20 percent level in lieu of soybean meal. The birds in group A were fed soybean based ration and those in group B, C, D, E and F were given ration containing untreated, solvent extracted, water treated, autoclaved and ferrous sulphate treated RSM, respectively. Presence of RSM in the rations whether untreated or treated, significantly reduced weight gain and feed consumption of the birds compared with those of control group but efficiency of feed utilization, dressed weight, dressing percentage and weights of internal organs amongst the groups remained unaffected. The size of thyroid galnds of the broilers using the meal was significantly larger than those having ration without RSM. The only exception was that the birds having solvent extracted meal had similar thyroid gland relative weight as those of control group indicating reduced antinutritional effect of isothiocyanates content due to solvent extraction of the meal.

• 한국식품위생안전성학회지
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• 제19권4호
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• pp.176-184
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• 2004

PAHs 화합물은 유기탄소화합물의 불완전연소에 의해 주로 발생하는데, 일반인들은 대기오염에 의한 호흡노출과 가열조리식품의 경구섭취가 주요 인체노출경로로 알려지고 있다. 본 연구에서는 PAHs 화합물에 오염된 식품이 식생활에 많은 부분을 차지하고 있어 우리나라 대표식품을 참고로 가정식과 외식의 식단을 작성하고 작성한 식단을 근거로 식품 중 PAHs 화합물 오염도를 분석하여, 분석된 PAHs 화합물의 오염도 자료를 활용한 가정식과 외식 1끼 식사를 기준으로 인체노출량을 비교하고, 성인 하루 가정식 2회, 외식 1회 섭취시의 1일인체노출량을 평가하였다. 다빈도${\cdot}$다소비식품에서 PAHs 화합물 오염도를 분석한 결과 총 PAHs 농도는 $2.00\~141.28\;ug/kg$의 범위로 검출되었으며, 멸치볶음이 가장 높게 나타났다. 상대독성계수(TEFS)를 활용하여 환산한 독성등가량은 $0.03\~1.31\;ugTEQ_{BaP}/kg$ 범위였고, 가장 높은 값을 가진 식품은 햄버거이었다. 식품별 오염도와 노출변수들을 고려하여 산출한 끼니별 가정식과 외식에서의 PAHs 화합물 평균인체노출량은 각각 $2.4\times10^{-3}\;ugTEQ_{BaP}kg/meal$와 $4.0\times10^{-3}\;ugTEQ_{BaP}/kg/meal$으로 외식이 가정식보다 PAHs화합물의 인체노출이 1.7배가 높은 수준으로 나타났다 햄버거, 숯불쇠고기구이, 숯불삼겹살구이, 고등어구이 등은 PAHs화합물 오염도와 독성등가량 및 1회분식품섭취량이 모두 높아 PAHs화합물의 주요 노출기여식품인 것을 알 수 있었다. 가정식에서 미역국이 $1.8\times10^{-3}\;ugTEQ_{BaP}/kg/meal$으로, 외식에서는 햄버거가$3.0\times10^{-3}\;ugTEQ_{BaP}/kg/meal$으로 기여도가 가장 높았다. 하루 3회 식사를 고려한 1일 PAHs화합물인체노출량수준은 $8.0\times10^{-3}\~9.7\times10^{-3}\;ug/kg/day$이었다. 본 연구 결과가 PAHs 화합물의 안전성평가와 기준규격설정의 필요성 및 식품 안전관리를 위한 규제를 제정하는 기초 자료가 되길 바라며, PAHs 화합물의 고노출상황을 줄일 수 있는 개개인의 계획된 식단 작성시, 이에 대한 정보를 제공하고자 한다.

• 대한방사선기술학회지:방사선기술과학
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• 제3권1호
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• pp.107-113
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• 1980

The concentration of total protein during the metamorphosis of the Indian meal moth, Plodia interpunctella $H\ddot{u}bner$ was measured using micro-Kjeldahl method by Oser(1965). Healthy specimens were chosen as samples at each developmental stages: the 1st instar larva, the 3rd inster larva, final instar larva, pupae 2, 6, 10 days and the adult 1 day. The total protein concentration decreased gradually until the two day pupal stage and increased at the six day pupal stage. In the one day dault stage, the concentration reached a maximum. In conclusion, changes of total protein concentation through the course of the physiological cycle form a U-shaped curve when graphed against the histolysis of larval organs and the histogenesis of adult organs. In view of controlling pest, the U-shaped pattern of physiological activity indicates that control will be the most effective at the time of the most physiological weakness manifested at the two day pupal stage.

• Nutrition Research and Practice
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• 제10권3호
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• pp.294-304
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• 2016

BACKGROUND/OBJECTIVES: Eating out has been reported to have negative effects on nutritional status. However, eating out can include meals prepared at home and eaten outside. Conversely, meals eaten at home can be brought from outside, as take-out and home deliveries have become common in Korea. Thus, we tested whether or not meal preparation location influences daily diet quality. SUBJECTS/METHODS: From the Korea National Health and Nutrition Examination Survey (KNHANES) 2007-2009, 4,915 Korean adults (20-64 years) were classified into two groups: home-made meal group (HMG), who ate ${\geq}2$ meals per day prepared at home (n = 4,146), and non-home-made meal group (NHMG), who ate ${\geq}2$ meals per day prepared outside home (n = 769). Daily diet quality was determined by energy intake, nutrient intake, Dietary Variety Score (DVS), and Diet Diversity Score (DDS). RESULTS: Compared to the HMG, the NHMG was more likely to consist of men, single, employed, educated and of a higher economic status (all, P < 0.01). The NHMG showed higher energy intakes (1,776 vs. 2,116 kcal/day) with higher percentages of energy from protein (15 vs. 23%) and fat (14 vs. 16%) and lower intakes of dietary fiber, phosphorus, potassium, niacin, and vitamin C (all, P < 0.01) than the HMG, with some variations among age groups. The NHMG tended to consume foods prepared by frying and grilling and had more one-dish meals such as bibimbap, noodles, and dumplings but also showed higher dietary diversity. CONCLUSIONS: It should be noted that home-made meals do not necessarily guarantee a healthy diet, and the effects of meal preparation location on nutritional status might vary depending on socio-demographic characteristics.

• Journal of Nutrition and Health
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• 제18권1호
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• pp.14-22
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• 1985

동물의 성장정도에 따라 식이섭취양식이 성장및 각 기관의 DNA와 RNA함량에 미치는 영향을 경토하기 위하여 , 성장기와 성장완료기의 흰쥐에게 ad-lib. feeding과 1일 3회 급여 그리고 1일 1회 급여등 3가지 섭취 양식으로 정제 식이를 급여하여 비교하였으며, 그 결과는다음과 같다. 1 ) 모든 실험동물에서 3희 식이군은 ad-lib. 군과 비슷한 증체량을 나타냈으나, 1회 식이군은 다른 군보다 낮은 증체량을 나타냈으며, 식이섭취량도 더 적었다. 2) 성장기 쥐의 경우. 1회 식이군은 ad-lib.군에 비해 간, 신장, 비장 등 내장기관의 DNA, RNA, 단백질 함량이 강소되었으나, DNAmg당 각 조성은 다른군과 차이가 없었다. 한편, 성인쥐의 경우는 1회 식이군에서, 간의 크기가 현저히 증가되었으며 DNAmg당 각 조성은 증가하였으나, 간의 DNA함량은 유의적 차이가 없었다. 신장과 비장은 식이섭취양식에 의한 유의적 차이를 보이지 않았다. 3) 성장기 쥐와 성인쥐의 위와 소장은 meal-feeding에 의해 크기가 증대된 경향을 나타냈으며, 혈청콜레스테롤은 유의적 차이가 없었다. 본 결과는 식이섭취양식이 성장기 동물에서는 내장기관의 세포수에 크게 영향을 미치며, 성장완료기 동물에서는 내장기관중 특히 간의 세포크기에 영향을 미침을 시사한다.

• 대한지역사회영양학회지
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• 제15권5호
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• pp.687-693
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• 2010

This study investigated difference of general eating habit and eating-out behavior between men and women of university students in Gyonggi area. The survey was conducted from 1 March to 1 April 2010, in Gyeonggi area. Self-administered questionnaires were collected from 250 students in Gyeonggi area. The research results show, first of all, that they eat twice a day, and they usually do not eat breakfast. The main reason why they do not eat breakfast is that they do not have enough time to eat. Between men and women, there is significant difference in eating amount and eating speed at 0.001 levels. Men's problems of eating behavior are irregular meal time and speed of eating time, and in case of women, they do not have a meal regularly and overeat at one time. Second, they usually eat out for a meal and gather with friends once to three times a week. Also, the lunch set-menu promotion is the most preferred one. Third, when men choose a restaurant, they consider in order of taste, convenience, amount, and service; women consider in order of atmosphere, taste, convenience, and service. Taste is the most important for men; atmosphere is the most important consideration for women. Taste (at 0.01 levels), sanitation (at 0.05 levels), and atmosphere (at 0.001 levels) are significantly different between men and women in choosing restaurant.

• Animal Bioscience
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• 제35권7호
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• pp.1030-1038
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• 2022

Objective: Two experiments were conducted to evaluate the effect of enzyme complex (EC) on the standardized ileal digestibility (SID) of amino acids (AA) in corn gluten meal (60%) (CGM), soy protein concentrate (SPC), dried bovine plasma (DBP), and poultry offal meal (POM). Experiments I and II were conducted with broilers in the pre-starter (1 to 7 days of age) and starter (1 to 21 days of age) phases, respectively. Methods: The treatments consisted of a protein-free diet (PFD) containing feedstuffs either supplemented with EC (xylanase, amylase, and protease) or not. In Experiment I, a total of 360 one-day-old male Cobb-500 broiler chicks were randomly housed in 45 pens, resulting in five replicates with eight birds each, totalizing eight treatments and one PFD group. In Experiment II a total of 270 one-day-old male Cobb-500 broiler chicks were randomly housed in 45 pens, resulting in five replicates with six birds each, totalizing eight treatments and one PFD group. The PFD groups were used to assess the endogenous AA losses. The birds were slaughtered to collect the ileal content. Results: In the pre-starter phase, the SID of arginine, branched chain-aminoacids, glycine, serine, aspartate, and glutamic acid increased with EC addition. The EC improved the SID of arginine and glutamic acid of CGM; the SID of valine and cystine of SPC; the SID of leucine, glycine, and aspartate of POM and the SID of isoleucine of DBP. In the starter phase, the SID of isoleucine, phenylalanine and glycine increased in EC-supplemented diets. The EC improved the SID of isoleucine of DBP; the SID of phenylalanine of CGM and POM. The SID of AA of SPC was not influenced by the EC. Conclusion: The addition of an EC to broiler pre-starter and starter diets is efficient in increasing the SID of AA on SPC, POM, and DBP.