• Journal of Animal Science and Technology
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• 제64권4호
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• pp.727-739
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• 2022

Mycotoxin contamination in pig feeds has a negative impact on growth performance, the immune system, and major body organs. Arginine (Arg) plays an important role in animals' body biochemistry and physiology. This study aimed to determine the effect of dietary Arg supplementation on mitigating the negative effects of mycotoxins in growing pigs. A total of 72 growing pigs (Landrace × Large white) with initial mean body weight (BW) = 55 ± 2.5 kg were allotted to four treatment groups with three replicates per group of six pigs per replicate in a completely randomized design. The treatments included a non-toxin diet with 1.2% Arg (NT1.2) and mycotoxin-challenged treatments supplemented with 1.2% Arg (TX1.2), 1.3% Arg (TX1.3), and 1.4% Arg (TX1.4). Statistical analysis of data included the effects of dietary level of Arg. The results indicated a significantly higher BW (p < 0.05), average daily gain (p < 0.05), and gain-to-feed ratio (p < 0.05) in the NT1.2 group than in the TX1.2, TX1.3, and TX1.4 groups. The relative weight of the liver was higher (p < 0.05) in the TX1.2 compared to that of the NT1.2 group, although it was not different from that of TX1.3 and TX1.4. The level of tumor necrosis factor-alpha was significantly up-regulated (p < 0.05) in the liver tissue of the TX1.2 group compared to that of the other treatments. Overall, dietary Arg supplementation remedied liver injury and alleviated the compromised immune system caused by mycotoxin toxicity.

• 디지털융복합연구
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• 제14권12호
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• pp.583-590
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• 2016

본 연구는 동양 식품학과 서양 식품학 원리의 융합적 접근을 통해 식품의 새로운 가치를 찾아보고자 계획, 수행되었다. 이에 따라 백복령, 산약, 연육 및 검인 등 4가지 재료에 대해 기미(氣味)를 기초로 섭취효능을 정리하였고, 일반 영양성분, 무기질, 유리당 및 항산화활성을 분석하여 동 서 융합적 섭취효능에 대한 접근을 시도하였다. 동양 식품학적으로 4가지 재료들은 소화기관인 비위(脾胃)를 건강하게 하는 섭취효능이 있음을 확인하였고 서양 식품학적으로는 인의 함량이 높은 탄수화물 급원식품임을 알 수 있었다. 또한 전자공여능에 의한 자유기 소거능, ABTS 자유기 소거능, SOD 유사활성을 통해 분석한 재료들의 항산화 활성은 검인의 활성이 다른 재료들에 비해 유의적으로 높게 나타났다. 영양성분 함량 또는 기미 분석만으로는 이 재료들의 특징을 온전히 이해하기에는 한계가 있다고 보여진다. 이에 따라 식품에 대한 다양한 측면에서의 특성을 접근해 보는 시도가 필요함을 인지할 수 있다. 본 연구결과는 재료의 동 서 융합적 특성과 효능을 돌출하여 향후 이 재료들을 활용한 건강음식, 기능성 식품 등의 레시피 구성을 위한 근거자료 및 식품의 특성을 판단할 때 동 서 융합적 시각의 필요성을 인지하는데 기초자료가 되리라 사료된다.

• 디지털융복합연구
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• 제15권1호
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• pp.461-469
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• 2017

연구 목적은 초등학생을 대상으로 한 식생활교육의 효과를 성별 학년별로 분석함으로써 식생활교육과 연계한 농촌융복합산업 활성화 방안을 모색하는 것으로 연구 대상은 충청남도 초등학교 8개교 152명이다. 연구 결과, 식생활교육 프로그램 적용 후 점수는 통계적으로 유의미하게 개선되었으며, 밥상머리교육, 바른 식생활 실천, 음식쓰레기 줄이기, 로컬푸드 알기의 네 하위영역도 통계적으로 유의미한 향상을 보였다. 성별 점수는 남 여학생 모두 통계적으로 유의미하게 개선되었고, 식생활교육 네 하위영역의 성별 분석 결과도 통계적으로 유의미하게 향상되었다. 학년별 점수는 모든 학년에서 통계적으로 유의미하게 개선되었고, 식생활교육 네 하위영역의 학년별 분석 결과도 통계적으로 유의미하게 향상되었다. 본 연구의 식생활교육 프로그램이 식생활 개선에 효과가 있으므로, 초등학생 대상의 교육에 활용 가능하며, 바른 먹거리 선택 능력을 신장시킴으로써 지역 먹거리 소비로 이어질 것으로 기대된다.

• Journal of Animal Science and Technology
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• 제66권3호
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• pp.493-503
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• 2024

The aim of this experiment was to evaluate the effects of low crude protein (CP) level with essential amino acids (AA) addition on growth performance, nutrient digestibility, microbiota, and volatile fatty acid composition in growing pigs. A total of 160 growing pigs (Landrace × Yorkshire × Duroc [LYD]; average initial body weight 16.68 ± 0.12 kg) were randomly allotted to one of the four treatments on the basis of initial body weight. A randomized complete block design was used to conduct this experiment in the Research Center of Animal Life Sciences at Kangwon National University. There were ten pigs/replicate with four replicates in each treatment. The treatments include; CON (Control, 17.2% dietary CP level), low protein (LP)-1.10 (15.7% dietary CP level + 1.10% lysine level), LP-1.15 (15.7% dietary CP level + 1.15% lysine level), LP1.2 (15.7% dietary CP level + 1.20% lysine level). The pigs fed CON and LP-1.2 diet showed greater final body weight than that of LP-1.1 diet (p < 0.05). Although average daily gain, average daily feed intake, and feed efficiency did not show any difference in phase 2 and 3, average daily gain and feed efficiency was significantly greater in CON and LP-1.20 in phase 1. However, the average daily feed intake did not show any difference during the experimental period. Isobutyric acid and isovaleric acid composition of LP treatments were lower than CON treatment in phase 2. Total branched chain fatty acid composition was significantly lower in LP treatment in phases 1 and 2. However, there was no significant difference among treatments in phase 3. The results of this study underscore the importance of AA supplementation when implementing a low-protein diet during the early growth phase (16-50 kg) in pigs.

• 한국융합학회논문지
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• 제11권2호
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• pp.341-350
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• 2020

본 연구는 간호 대학생의 영양지식, 식이 자기효능감, 식습관을 파악하고 관련 요인들이 식행동에 미치는 영향요인을 조사하는 서술적 연구이다. G시의 소재 대학교에 2학년 재학생 123명을 대상으로 2018년 6월 18일부터 20일까지 편의표집하였다. 수집된 자료는 SPSS 20프로그램을 사용하여 기술통계, t-test, ANOVA, Scheff, Pearson's correlation, Multiple regression으로 분석하였다. 본 연구결과 대상자의 식행동에 영향을 미치는 요인으로는 학교생활 만족도, 과식과 간식 횟수, 식이 자기효능감으로 파악되었다(adjusted R²=0.48, F=11.31, p<.001). 본 연구 결과 간호대학생의 식행동에 대한 영향요인을 바탕으로 식이 자기효능감을 증진시켜 건강한 식습관을 갖출 수 있는 역량을 갖추도록 간호중재 프로그램 개발을 해야 할 것이다.

• 디지털융복합연구
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• 제15권3호
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• pp.385-391
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• 2017

본 연구는 동양의 기미론 원리에 입각하여 구성된 음식의 식품영양학적 가치를 인지하여 음식의 효능이나 합리적인 섭취방안에 대한 동 서 융합적 이해를 도모하고자 계획되었다. 이에 따라 율무복령죽을 대상으로 기미론 원리에 따른 섭취효능을 분석하였고, 동시에 일반성분과 무기질 함량을 분석하여 서양의 식품영양학적 영역에서의 섭취효능을 판단하여 융합적으로 율무복령죽의 특성 및 식이요법에 활용할 수 있는 음식으로써의 가치를 분석하였다. 율무복령죽은 인의 함량이 높은 산성식품으로 열량이 높은 음식으로 분석되었다. 또한 비(脾)에 정체된 수습(水濕)을 배출시켜 과도한 습(濕)이 제거되어 비(脾)의 운화(運化)기능을 강건히 함으로써 기(氣)형성의 기초가 되는 정미물질을 잘 만들 수 있는 음식으로 판단되었다. 본 연구결과는 우리나라의 전통적 기미론에 입각한 식품의 특성 및 섭취효능 접근 필요성의 단초를 제공하였다고 사료되며 향후 동 서 영역에서의 식품학적 가치를 융합적으로 판단하여 진정한 식품이나 음식의 효능접근이 이루어지기를 기대한다.

• Natural Product Sciences
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• 제23권3호
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• pp.222-226
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• 2017

Flavonoids including quercetin and rutin are a group of naturally occurring compounds widely distributed in plants, especially in buckwheat. Thus, cereal and the leaf of the plant have increasingly used as a source of nutritional and functional foods such as noodle, cake or soup in Korea, Japan and other countries. This study investigated comparative effects of dietary rutin rich in buckwheat and its aglycone, quercetin, on serum biomarkers and antioxidant parameters in rats treated with chronic ethanol. Rats were fed with the liquid diets prepared by the method of Lieber Decarli. Serum alanine transaminase (ALT) and aspartate transaminase (AST) activities increased significantly by alcohol feeding. Dietary flavonoids including rutin, quercetin and their mixtures (1/1, v/v) decreased significantly the activities of serum ALT whereas the feeding of quercetin decreased only the activity of serum AST. The concentration of serum malondialdehydes elevated by chronic alcohol feeding decreased markedly in all the experimental groups that were fed with the flavonoids; however, the combined administration of quercetin or rutin, but not that of rutin or quercetin alone decreased significantly the concentration of liver malondialdehydes to the normal range in rats fed without ethanol. Our results suggested that dietary combined mixture of rutin and quercetin might be effective in ameliorating adverse responses seen in rats exposed to ethanol chronically.

• Asian-Australasian Journal of Animal Sciences
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• 제33권10호
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• pp.1590-1598
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• 2020

Objective: The objective of this study was to evaluate the effects of lysophospholipids (LPL) supplementation on rumen fermentation, degradability, and microbial diversity in forage with high oil diet in an in vitro system. Methods: Four experimental treatments were used: i) annual ryegrass (CON), ii) 93% annual ryegrass +7% corn oil on a dry matter (DM) basis (OiL), iii) OiL with a low level (0.08% of dietary DM) of LPL (LLPL), and iv) OiL with a high level (0.16% of dietary DM) of LPL (HLPL). An in vitro fermentation experiment was performed using strained rumen fluid for 48 h incubations. In vitro DM degradability (IVDMD), in vitro neutral detergent fiber degradability, pH, ammonia nitrogen (NH₃-N), volatile fatty acid (VFA), and microbial diversity were estimated. Results: There was no significant change in IVDMD, pH, NH₃-N, and total VFA production among treatments. The LPL supplementation significantly increased the proportion of butyrate and valerate (Linear effect [Lin], p = 0.004 and <0.001, respectively). The LPL supplementation tended to increase the total bacteria in a linear manner (p = 0.089). There were significant decreases in the relative proportions of cellulolytic (Fibrobacter succinogenes and Ruminococcus albus) and lipolytic (Anaerovibrio lipolytica and Butyrivibrio proteoclasticus) bacteria with increasing levels of LPL supplementation (Lin, p = 0.028, 0.006, 0.003, and 0.003, respectively). Conclusion: The LPL supplementation had antimicrobial effects on several cellulolytic and lipolytic bacteria, with no significant difference in nutrient degradability (DM and neutral detergent fiber) and general bacterial counts, suggesting that LPL supplementation might increase the enzymatic activity of rumen bacteria. Therefore, LPL supplementation may be more effective as an antimicrobial agent rather than as an emulsifier in the rumen.

• 대한영양사협회학술지
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• 제26권2호
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• pp.153-173
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• 2020

The purpose of this study was to objectively quantify the effects of nutrition and dietary life education on preschoolers through meta-analysis. In addition, it provides basic data for the implementation of nutrition education and development of systematic nutrition and dietary life education programs. In this study, a meta-analysis of 27 papers was conducted that conformed to the selection criteria in the study conducted from January 2012 to August 2019 to derive objective data on the effects of education. As a result of the analysis, the overall effective size of nutrition and dietary life education for preschoolers was 0.829, which indicates a strong effect. According to the education method, the effect size of general education was 0.562, which indicates a medium effect size, the vegetable playing-based experience education was 0.685, which indicates a medium effect size, and cooking activity-based experience education was 1.101, which indicates a large effect size. Judging from this result, experience activity education was more effective than general nutrition education. In addition, the combined size of convergence education conducted through a combination of general and experience education was found to be the most effective at 1.301. In terms of educational effect, it was confirmed that the effect size was 0.898 for improving nutrition knowledge, 0.858 for improving dietary habits, 0.836 for improving unbalanced diet, and 0.756 for improving food preference and intake, and the sizes of effects were all found to be large. As frequency of education increased, the number of education participants decreased and the effect of education increased.

• Journal of Animal Science and Technology
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• 제65권5호
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• pp.989-1001
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• 2023

The study evaluated the effects of dietary fiber and energy levels administered during two growing periods (d 0-28 and d 29-56) for pigs exposed to a high temperature. A total of 96 growing pigs were used in six treatments as: Two treatments in thermoneutral temperature (21℃-24℃) with dietary energy of 3,300 and the inclusion of high or low fiber, two treatments in heat stress (30℃-34℃) with dietary energy of 3,300 and the inclusion of high or low fiber, and two treatments in heat stress with dietary energy of 3,450 and the inclusion of high or low fiber. Among standard energy level treatments, heat-stressed pigs showed lower average daily gain (ADG), feed intake, digestibility of dry matter, gross energy, crude protein, and crude fiber in phases 1 and 2. Moreover, higher concentrations of acetate, propionate, butyrate, and total short-chain fatty acid (SCFA) in feces were shown in pigs fed high fiber diets. There was a negative interaction between dietary fiber and energy for the fecal concentration of isobutyrate in phase 1 and valerate in phase 2. Pigs in heat stress treatments showed a higher rectal temperature, respiratory rate, hair cortisol, plasma zonulin, and fecal lipocalin-2. Among heat stress treatments, the overall ADG was increased in pigs fed high fiber. Pigs fed high dietary fiber showed a greater concentration of acetate, propionate, butyrate, and total SCFA. High fiber treatments decreased plasma zonulin. In conclusion, the inclusion of beet pulp, soluble fiber, at the level of 4% looks necessary in pigs diet during heat stress.