• Animal Bioscience
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• 제34권3_spc호
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• pp.354-362
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• 2021

Broiler chickens grow rapidly, and their nutrient requirements change daily. However, broilers are fed three to five diet phases, meaning nutrients are under or oversupplied throughout production. Increasing diet phases improves production efficiency as there is less time in the production cycle that nutrients are in under or over-supply. Nevertheless, the process of administering four or more diets is costly and often impractical. New technologies are now available to blend feed to match the daily nutrient requirements of broilers. Thus, the aim of this review is to evaluate previous studies measuring the impact of increasing feed phases on nutrient utilisation and growth performance, and review recent studies taking this concept to the extreme; precision nutrition - feeding a new diet for each day of the production cycle. This review will also discuss how modern precision feeding technologies have been utilised and the potential that new technologies may bring to the poultry industry. The development of a precision nutrition regime which targets daily requirements by blending dietary components on farm is anticipated to improve the efficiency of production, reduce production cost and therefore improve sustainability of the industry. There is also potential for precision feeding technology along with precision nutrition strategies to deliver a plethora of other management and economic benefits. These include increased fluidity to cope with sudden environmental or market changes, and the ability to alter diets on a farm by farm level in a large, integrated operation. Thus, the future possibilities and practical implications for such technologies to generate a paradigm shift in feed formulation within the poultry industry to meet the rising demand for animal protein is also discussed.

• Asian-Australasian Journal of Animal Sciences
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• 제19권9호
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• pp.1271-1282
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• 2006

The objective of this study was to investigate the effects of either maize or sulla silage supplementation to grazing dairy cows in summer. Forage mixtures used in the four week trial were based on previous experimental results but inclusion of rumen fistulated cows in five treatments enabled rumen sampling and use of in sacco incubations to determine the diet effects on digestion kinetics. Sulla and maize silages were used to supplement pasture and to meet minimum requirements for dietary protein concentration. Five groups of ten cows were grazed on a restricted daily allowance of 18 kg dry matter (DM) pasture/cow to simulate a summer pasture deficit, and four of these five groups received an additional 6 kg DM $cow^{-1}d^{-1}$ of silage (sulla, maize, or sulla and maize silages). A sixth group was given a relatively unrestricted (38 kg DM $cow^{-1}d^{-1}$) pasture allowance. The silage mixtures and pasture were incubated in sacco during the final week of the trial. The pasture was of high nutritive value and not typical of usual summer conditions, which favoured a response to quantity rather than quality of silage supplements. There was no difference in cow performance with the four silage supplements and the low milk solids (MS) production (about 1.0 kg $MS\;d^{-1}$) relative to full pasture (1.3 kg $MS\;d^{-1}$) showed the principal limitation to performance was dry matter intake. Milk composition was not affected by silage type and the low level of pasture substitution (0.29) suggested metabolizable energy (ME) was the principal limitation to performance. Samples of rumen liquor and in sacco data demonstrated significant effects of supplement; DM degradation rates (k) was highest ($0.084h^{-1}$) when cows were fed 6 kg sulla silage whereas diets with a high proportion of maize silage were slowly degraded (p<0.01).

• Journal of Nutrition and Health
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• 제16권4호
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• pp.296-302
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• 1983

국가적(國家的) 차원에서의 국민영양소요양(國民營養所要量)을 확립하는데 중요한 지표(指標)가 되는 한국인(韓國人) 평균1인1일당(平均1人1日當) 영양소요양(營養所要量)설정의 필요성에 의하여, 1980년도(年度) 경제기획원인구(經濟企劃院人口)센서스 자료(資料)와 FAO한국협회(韓國協會)가 1980년(年) 제(第)3 차 (次) 개정(改定)한 한국인영양권장양으로부터 한국인(韓國人) 평균(平均)1인(人)1일당(日當) 영양소요양(營養所要量)을 계산(計算)하였다. 즉 영양소별(營養素別) 평균(平均)1인(人)1일당(日當) 영양소요양(營養所要量)은 에너지 2,200 kcal, 단백질(蛋白質) 70 g, 칼슘 0.72 g, 철(鐵) 14 mg, 비타민 A 1,900 IU, 비타민 C 50 mg, 비타민$B_{1}$ 0.9 mg, 비타민 $B_{2}$ 1.2 mg 그리고 나이아신당양(當量)은 15 mg이었다.

• Journal of Nutrition and Health
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• 제52권1호
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• pp.104-117
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• 2019

본 연구에서는 제6기 (2013 ~ 2015년) 국민건강영양조사 자료를 이용하여 전기노인 (65 ~ 74세)과 후기노인 (75세 이상)의 식생활 및 건강 특성을 식품안정성에 따라 비교 분석하였다. 본 연구의 주요 결과를 요약하면 다음과 같다. 전체 노인의 식품불안정성 비율은 10.6%였고, 전기노인과 후기노인에서는 각각 10.0%, 11.6%로 나타났다. 전기노인과 후기노인에서 공통적으로 식품불안정군에서 식품안정군에 비해 에너지, 지방으로부터의 에너지섭취비율, 리보플라빈, 니아신의 섭취량이 유의적으로 낮았고, 탄수화물로부터의 에너지섭취비율은 식품불안정군에서 식품안정군보다 유의하게 높았다. 전기노인에서는 분석한 모든 영양소 (단백질, 비타민 A, 티아민, 리보플라빈, 니아신, 비타민 C, 칼슘, 인, 철)에 대하여 식품불안정군에서 식품안정군보다 부족하게 섭취하는 비율이 높았다. 반면 후기 노인에서는 단백질, 리보플라빈, 니아신, 인을 부족하게 섭취하는 비율이 식품불안정군에서 식품안정군보다 유의하게 높았으나 비타민 A, 티아민, 비타민 C, 칼슘, 철에서는 식품안정성에 따라 유의적인 차이가 없었고, 식품불안정군뿐 아니라 식품안정군에서도 영양소 섭취 부족자 비율이 높게 나타났다. 전기노인과 후기노인에서 공통적으로 식품불안정군에서 식품안정군보다 고기 생선 달걀 콩류와 과일류의 섭취 횟수가 유의적으로 낮았고, 전기노인에서는 곡류와 채소류, 후기노인에서는 유지 당류의 섭취 횟수에서도 식품안정성에 따라 유의적인 차이가 있었다. 전기노인과 후기노인 모두 식품불안정군에서 식품안정군에 비해 식사를 거르는 비율이 높은 경향을 보였다. 전기노인에서 아침, 점심, 저녁을, 후기노인에서는 아침과 저녁을 혼자서 식사하는 비율이 식품불안정군에서 식품안정군에 비해 유의적으로 높았다. 건강 특성에 대해서는 전기노인과 후기노인에서 공통적으로 식품불안정군에서 식품안정군에 비해 주관적 건강 상태가 '매우 나쁘다' 또는 '나쁘다'고 응답한 비율이 높았다. 또한 전기노인에서는 저작불편함을 느낀다고 응답한 비율이 식품불안정군에서 식품안정군보다 높게 나타났으나 후기노인에서는 식품안정성에 따른 유의적인 차이는 없었다. 결론적으로, 두 연령집단에서 식품안정성에 따른 식생활 및 건강 특성은 다른 양상을 보였다. 이러한 차이는 전기노인에서 후기노인보다 뚜렷하게 나타났다. 따라서 향후 노인 대상 식품 및 영양지원 프로그램 설계 시 노인을 연령별로 세분화하고 식품안정성에 따라 다르게 나타난 양상을 고려할 필요가 있겠다.

• 대한지역사회영양학회지
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• 제1권1호
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• pp.9-27
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• 1996

The nutritional status is strictly related with flood production, flood processing, and distribution along with habits, education and technological achievement, adapted and adjusted to socio-economic conditions. All these factors are independently affecting the nutritional status of populations. In addition to the above mentioned factors launch of it is useful to consider two points ; unification of the South and the North Korea and WTO. The present study gives and overview of basic knowledge about nutritional status of Korean by using availab1e data in relation to nutrition. The basic characteristics of Korean diet with proportions high in carbohydrate and low in fat, have been relatively constant for the past two decades. The average daily flood intake in terms of weight of flood per person is relatively constant throughout the years. Although the proportion of animal food intake tends to increase recently, the Korean diet is still insufficient in meat, eggs, milk, and fish. Moreover because milk has not been accustomed flood with the general population and not much used in traditional flood preparation in Korea, milk consumption was especially low in comparison with western countries. The total energy intake was relatively constant throughout the years from 1969 to 1993. However, changes in the composition have occurred in the past two decades. The amount and proportions of fat have been s1ightly increasing while the total amount of carbohydrate has been decreasing. The nutrition preblems of Korea have changed over the past severa1 decades. The general adequacy of protein and energy existing after Korean War(1950) was resolved now. Since then the average diet appears to be nearly desirable in terms of rapid rates of growth during childhood and attainment of progressively stature and body weight at maturity. The dietary habits of some young people in these days seem to be taking a more western style diets. This trends if established by habit may lead to a marked change in the traditional diet and health. I think Korean nutritional experiences have potential values for tole other countries in Asia and in western countries. Korean diet illustrates a high level of nutritional status and health attainable will a largely vegetable diet : high in complex carbohydrates, and dietary fibre, and low in tat, and reasonable amount of total protein. This is significant for developing and developed countries that must select specific goals fir adequate nutrition for the people. Compared to the western countries, Koreas different incidence of coronary heart disease and malignancy demonstrates the significance of environment and probably the prominent role of diet in the development of these diseases. The changes occurring in the Korean diet of fir the unusual opportunity to assess the effect of diet upon chronic degenerative disease. In the future, the Korean diet might be continue to change significantly These changes are being influenced by socioeconomic factors that have been emerging and growing stronger since mid-l980 and that probably continue to be potent. The expanded purchasing power of the consumer results in increased discretionary purchases. In the case of foodstuffs, the consumer demands appear to be directed toward items of higher protein content, which, being primarily animal products, are inevitably accompanied by an increased consumption of fat. The continued availability of these more expensive flood items depends upon the balance of foreign trade favouring their importation and domestic production. A regression of foreign trade could result in a decreased supply for the consumer, whereas continued growth of trade iou]d provide freedom for increasing availability to the consumer. In this latter situation the exact choice of foodstuffs is depending upon comsumer tastes and the pressures that may influence it.

• 한국식품영양과학회지
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• 제24권1호
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• pp.30-40
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• 1995

본 연구는 청소년의 비타민.무기질 보충제의 복용 실태의 식이로 부터 섭취하는 비타민.무기질의 양에 대해 알아보고자, 대도시, 중소도시, 농촌에 거주하는 인문계 여자고등학생 706명을 대상으로 하여 연구하였으며, 그 결과는 다음과 같다. 1) 조사대상자의 비타민.무기질 보충제 복용율은 43.8%였다. 도시지역 거주자가 농촌지역 거주자 보다, 가족의 월수입이 높을수록, 부모의 학력이 높을수록 비타민.무기질 보충제 복융율이 유의성 있게 높았다. 2) 건강에 대한 인지도, 건강염려증 척도, 체중에 대한 인지도, Broca 지수, 질병의 유무는 비타민.무기질 보충제 복용율에 유의적인 영향을 주었다. 건강상태가 좋지않다고 느끼며, 건강염려증의 점수가 높은 사람일수록 비타민.무기질 보충제의 복융율이 높았으며, Broca 지수가 정상이 아닌 군과 질병이 있는 군의 비타민.무기질 보충제의 복용율이 높았다. 3) 비타민.무기질 보충제 복용자의 신장은 비복용자와 차이가 없었고, 체중은 비복용자가 복용자에 비해 많았다. 4) 비타민.무기질 보충제 복용자와 비복용자 사이에 영양지식, 식습관의 차이는 나타나지 않았으나, 식습관이 양호한 군이 식습관이 불량한 군에 비해 비타민.무기질 보충제의 복용율이 높았다. 그러나 식습관 군별의 비타민.무기질 보충제 복용자와 비복용자 사이에 영양지식의 점수 차이는 없었다. 5) 비타민.무기질 보충제 복용자는 식이로 부터 비타민 A, 비타민 $B_2$, 나이아신, 비타민 C의 섭취량이 비복용자에 비해 적었다. 연구 대상자 모두 에너지, 비타민 $B_1$, 비타민 $B_2$, 나이아신, 칼슘, 철분의 섭취량이 권장량 보다 적었다. 특히 철분은 비타민.무기질 보충제 복용자의 60.1%, 비복용자의 74.1%가 권장량의 2/3 미만을 섭취하였으며, 기타의 비타민.무기질도 권장량의 2/3미만을 섭취하는 대상자가 많았다. 6) 비타민.무기질 보충제 복용자의 60.8%가 종합비타민을 복용하였으며, 비타민.무기질 보충제를 복용하는 복용하는 이유는 힘을 내기 위해서가 39.9%, 주의의 권유에 의해서 28.3%, 질병의 치료를 위해서 17.4%이다. 비타민.무기질 보충제 비복용자의 비타민.무기질 보충제를 복용하지 않는 이유는 건강하기 때문이 36.0%로 가장 많았으며, 귀찮아서, 식이로 충분히 섭취하기 때문에, 효과가 없어서의 순이었다. 비타민.무기질 보충제 복용자의 비타민.무기질 보충제 복용에 대한 견해는 효과가 있다. 23.3%, 효과가 없다 18.4%이며, 비복용자는 효과가 있다 16.6%, 효과가 없다 14.4%로 나타났다.

• 대한지역사회영양학회지
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• 제10권6호
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• pp.952-962
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• 2005

To explore the relationship between economic status and food and nutrient intake patterns, the 2001 National Health and Nutrition Survey result was analyzed. Dietary intake data of 6,978 Korean adults of 20 years and older who participated in the 2001 National Health and Nutrition Survey were used along with their demographic data. Economic status of the subjects was classified into the following 4 groups based on the self-reported average monthly income of household with reference to the minimum monthly living expenses (MLE) in 2001 : low < $100\%$ MLE $\leq$ middle < $200\%$ MLE $\leq$ high < $300\%$ MLE $\leq$ higher, Individuals in the higher income class had significantly higher mean intake for most of the nutrients including energy, protein, carbohydrate, fat, calcium, thiamin, riboflavin, niacin and vitamin C, and a higher percentage of energy intake from fat. In addition, they consumed more animal foods including meats, eggs, fish/shellfish, milk/dairy products and fats. On the other hand, the mean intakes of individuals in the lower economic class for calcium, vitamin A, and riboflavin were lower than $75\%$ of RDAs. And, there was a predominant difference in contribution of fat to total energy intake among the groups of different economic status. These results showed that household income is an important factor influencing the food and nutrient intake patterns of the Korean adult population. Although individuals at different age classes may respond differently to a change in economic status, developing and implementing nutrition policy and intervention programs for those nutritionally vulnerable groups should consider the economic status as an important factor to customize and differentiate the content of the Program. (Korean J Community Nutrition 10(6) : $952\∼962$, 2005)

• 대한지역사회영양학회지
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• 제25권5호
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• pp.406-415
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• 2020

Objectives: The aim of this study was to compare the nutritional intake and Diet Quality Index-International (DQI-I) of gynecological cancer survivors and normal women. Methods: This study compared the anthropometric indices, dietary behavior, nutritional intake, and DQI-I in women with previous history of breast or uterine cancer [Gynecological cancer survivors group (GCSG, n=126)] and normal women [Normal control group (NCG, n=7,011)] using the 2013~2016 Korea National Health and Nutrition Examination Survey data. Results: Body mass index and waist circumference were lower in the GCSG compared the NCG. The frequency of skipping breakfast and eating out was higher in the NCG compared to GCSG. Energy and fat intake were significantly higher in the NCG than in the GCSG, whereas intake of all minerals and vitamins (excluding thiamine), and dietary fiber intake were higher in GCSG. It was observed that the fatty acid intake of the GCSG was significantly lower than that of the NCG. The diet quality evaluation using DQI-I results showed that GCSG was higher in the "within-group" diet variety and adequacy of vegetable group than the NCG, whereas the intake level of the fruit group was higher in NCG. Besides, protein, calcium, and vitamin C intake were higher in the GCSG than in the NCG. The GCSG showed higher levels of total fat and saturated fat moderation than the NCG, whereas cholesterol moderation showed the opposite results. The results of DQI-I comparison according to the cancer survival years showed that the overall score and scores related to diet adequacy and balance were higher in the below 5-year group, whereas the over 5-year group scored higher in terms of moderation of diet. Conclusions: The results of this study suggest that a chronic disease based management approach is needed in cancer survivors. The study provides important data which can help in the preparation of guidelines for long-term lifestyle and diet management, in these patients.

• 대한지역사회영양학회지
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• 제8권6호
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• pp.927-937
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• 2003

This study was conducted to investigate dietary and other factors affecting bone mineral density (BMD) in Korean premenopausal women. Seventy-eight premenopausal women who visited the Health Promotion Center for health examinations volunteered to participate in this study. They were divided into two groups according to their bone status as shown by their T-scores: a non-osteoporotic group and a osteoporotic group. The results are as follows: The mean BMDs of the lumbar spine and femoral neck were 1.21$\pm$0.02$g/cm^2$ and 0.97$\pm$0.04$g/cm^2$, respectively. The BMD levels of the osteoporotic group were significantly lower than those of the non-osteoporotic group (p<0.001, respectively). The heights of the women in the osteoporotic group were significantly lower than those of the non-osteoporotic group (p<0.01) however, their body weights did not show any significant differences although they tended to be lower. The mean daily intake of energy was 1720$\pm$52㎉. When the nutrient intake was compared with the Korean recommended dietary allowances (RDA), calcium, Fe, vitamin A and riboflavin intakes were lower than the RDA. Their was no significant difference in the nutrient intake of the non-osteoporotic group and osteoporotic group except for the intakes of protein, fat and niacin. Their was no significant difference between the non-osteoporotic group and the osteoporotic group and all were within the normal range. However, the serum alkaline phosphatase level of the osteoporotic group was significantly higher than that of the non-osteoporotic group (p<0.001). Height measurements showed positive correlations with lumbar spine bone mineral density (LBMD, r=0.332, p<0.01) however there was no correlation with femoral neck bone mineral density (NBMD). Age, age at menarche, body weight, body mass index (BMI) and obesity showed no correlation with BMD. The BMD of the lumbar spine was significantly and positively related to the intake of niacin and vitamin C (r=0.236, p<0.05; r=0.274, p<0.05). Serum levels of calcium and phosphorus showed negative correlations with LBMD (r=-0.698, p=0.0001, r=-0.503, p=0.0001, respectively). The results suggested that the BMD of the lumbar spine was positively related to the intake of niacin and vitamin C in premenopausal women. Therefore, this study confirmed that one of the most effective ways to minimize bone loss would be have a higher intake of niacin and vitamin C rich foods and engaging habitually in physical activity may have a beneficial effect on BMD in the Premenopausal Period.

• 대한지역사회영양학회지
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• 제11권3호
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• pp.307-316
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• 2006

This study was conducted to investigate the relationships among body composition, dietary intake, and clinical blood indices in college students by body mass index (BMI). Their body compositions were determined by means of BIA (Bioelectrical Impedance Analysis) method. Their dietary intake was determined using a 3-day record method and their hematological indices were determined by semi-automated microcell counter (Sysmex F-520). Their serum lipid levels were measured using biochemical analyzer (Spotchem). Subjects were classified as underweight, normal or over-weight groups according to their BMI. The subjects were 69 healthy college students aged 20 to 26 years. The average age, height, weight, and BMI was 21.3 years, 162.6 cm, 54.4 kg, and $20.6cm/m^2$, respectively. Their average consumption of energy was 1693 kcal, 84.7% of RDA and their mean ratio of carbohydrate: protein: fat were 54.5 : 16.4 : 29.0. There was no significant difference in nutrient intake among the groups except ${\beta}$-carotene and vitamin C. The ${\beta}$-carotene intake was significantly higher in the underweight group. Vitamin C intake was significantly higher in the overweight group. The mean intakes of Ca, Fe, Zn and folate of subjects were 74.8% to 83.2% of RDA. Especially, intakes of Ca, Fe, Zn and folate were lower in the abnormal weight groups. The overall mean values of the hematological indices in female college students were within the normal range and there was no significant difference among the groups. However, anemic subjects with hemoglobin (< 12 g/dl) and hematocrit (< 36 g/dl) accounted for about 11% of the subjects. The everall mean values of the serum lipid levels were within the normal range and there was no significant difference among the groups. But serum HDL-cholesterol level of the overweight group was lower than that of the other groups. LDL-/HDL-cholesterol ratio and AI index were significantly higher in the overweight group compared to the other groups. Based upon this study, it is necessary for college women to be educated regarding consuming more Ca, Fe, Zn, folate and less fat and cholesterol in order to have better health promotion.