Sung-Woong Jung;Sungho Do;Jae-Cheol Jang;Jinsu Hong;Geonil Lee;Yoo Yong Kim
Journal of Animal Science and Technology
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v.66
no.1
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pp.135-144
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2024
The objective of this study was to investigate the influence of feeding frequency on a sow's reproductive performance and stress response during gestation. A total of twenty multiparous sows (Yorkshire × Landrace) were used in a completely randomized design based on their parity, body weight (BW), and backfat thickness (BFT), and the sows were allotted to two different feeding systems: 1) once daily feeding (OF) and 2) twice daily feeding (TF) in corn-soybean meal based diets. The gestation diet was formulated to contain 3,265 kcal of metabolizable energy (ME) / kg, 12.90% of crude protein (CP), and 0.75 % of total lysine. The lactation diet was formulated to contain 3,265 kcal of ME / kg, 16.80% of CP, and 1.08% of total lysine and provided ad libitum during lactation. In gestation, sow BFT and BF changes were not affected by feeding frequency, but higher BW and BW gain from day 35 to 90 and day 35 to 110 were observed in OF sow (p < 0.10). In lactation, feeding frequency did not influence on BW, BW gain, BFT, BF changes, average daily feed intake, and wean-to-estrus interval. Also, there were no differences in litter size, litter weight and piglet weight in lactating sows. OF sows had higher (p < 0.05; p < 0.10) protein, solid-not-fat, and total solid concentrations in colostrum compared to TF sows, while OF sows had a lower (p < 0.05) lactose concentration in colostrum compared to TF sows. Sows in OF showed significantly lower average daily water consumption (ADWC) from day 35 to 110 of gestation (p < 0.05). While there were no significant differences in stereotypic behaviors and salivary cortisol levels during gestation between treatments, the OF sows showed less time spending on the activity at day 105 (p < 0.05). In conclusion, reduced feeding frequency increased BW gain during gestation, decreased activation time, and changed the colostrum composition. This information may contribute to the understanding of the physiological and behavioral change of gestating sows by manipulating feeding frequency.
Purpose: High-sensitivity C-reactive protein (hs-CRP) is primarily synthesized in the liver upon stimulation of infectious disease cytokines, such as interleukin-6 (IL-6), and is used as a biological marker of systemic inflammation. Previous studies reported that hs-CRP is closely related to diet and abdominal obesity. Furthermore, a dietary score favoring the consumption of vegetables, fruits, and whole grains over meat and saturated fat reduced inflammation and decreased the prevalence of obesity and abdominal obesity. Nevertheless, no studies have examined whether hs-CRP mediates the relationship between dietary scores and abdominal obesity, and research on the Korean Healthy Eating Index (KHEI) is lacking. Therefore, the present study examined the association between the KHEI and abdominal obesity and the mediating effect of hs-CRP. Methods: In total, 17,770 adults aged ≥19 years were included in the study using the Korea National Health and Nutrition Examination Survey 2015-2018. KHEI was developed to assess the overall diet quality of Korean adults. Multivariable linear and logistic regression analyses assessed the relationship between KHEI, hs-CRP, and abdominal obesity. The mediation analysis with the bootstrapping method was performed using SAS MACRO. Results: Among women, the odds ratio (OR) of abdominal obesity prevalence was lower in the highest KHEI compared to the lowest KHEI after adjusting for age, body mass index, educational level, income level, occupational status, marital status, household type, region type, alcohol consumption, smoking status, physical activity, total energy intake, and hsCRP (OR 0.744, 95% confidence interval 0.598-0.926). The association between KHEI and abdominal obesity was partially mediated via hs-CRP, and the mediated proportion was 68.7% in men and 38.1% in women. Conclusion: A substantial relationship was observed between the KHEI and abdominal obesity among females. Moreover, according to the KHEI, abdominal obesity may be mediated partially by hs-CRP.
Min Ju Kim;Seong-Soo Roh;Seong-Wook Seo;Kyoung Kim;Mi-Rae Shin
Journal of Nutrition and Health
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v.57
no.1
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pp.27-42
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2024
Purpose: This study examined whether regular moderate-intensity treadmill exercise (Ex) and Syzygium aromaticum L. (SA) administration can influence lipid and muscle metabolism in obese rats induced by a 60% high-fat diet (HFD). Methods: Rats, except those in the Normal group, were exposed to a 60% HFD for 4 weeks to induce obesity. The obese rats were assigned randomly to three groups: HFD control group, HFD+Ex group, and HFD+Ex+SA group. Treadmill exercise was conducted five times a week for 4 weeks, with a 5° incline and a speed of 18 m/min (Week 1: 20 minutes; Weeks 2: 25 minutes; Weeks 3-4: 30 minutes). Serum analysis was performed. Western blot analysis was conducted on the liver and soleus muscle, and histopathological analysis was carried out on the liver and adipose tissues. Results: The body weight change in the Ex groups was significantly lower than in the HFD control group, while the soleus muscle weight in the HFD+Ex group increased significantly. The histopathological examination in the Ex groups revealed a marked reduction in liver lipid accumulation and a decrease in adipocyte size in adipose tissue. Obesity induction increased leptin levels substantially, but Ex notably reversed these changes. Ex resulted in significant inhibition of ROS and ONOO-, whereas the serum inflammatory cytokine, IL-1β, and total cholesterol were reduced only by SA administration. Furthermore, the inflammatory proteins in the liver were inhibited more effectively when Ex was supplemented with SA. The expression of the muscle synthesis-related proteins and degradation proteins were modulated by Ex and Ex+SA. Conclusion: Ex significantly affected lipid and muscle metabolism, and adding SA alleviated the inflammation.
Purpose: This study investigated the anti-obesity effects of a combination of Syzygium aromaticum L. and Sorbus commixta Hedl. (SS) in vitro and in vivo. Methods: The extracts of Syzygium aromaticum extract (SA) and Sorbus commixta extract (SC) were prepared individually using distilled water. They were mixed in a 1:2 ratio for use in the experiment. To assess the anti-obesity potential of SS in vitro, we examined cell proliferation, cellular triglyceride (TG), and total cholesterol (TC) levels, as well as lipogenesis and β-oxidation in 3T3-L1 cells. To confirm its anti-obesity potential in vivo, C57BL/6J mice were fed a 60% high-fat diet (HFD) to induce obesity. SA alone, SC alone, and their combination compound, SS (at a dosage of 200 mg/kg) were orally administered for 6 weeks. Thereafter, to conduct a comparative evaluation, serum analysis, western blotting of liver tissues, and histopathological analysis were performed. Results: Both SS200 and SS400 significantly inhibited the cellular TG and TC contents in the 3T3-L1 cells. Furthermore, treatment of the cells with SS (at a dose 200 and 400 ㎍/mL) also led to a noticeable regulation of key lipogenic and β-oxidation factors. Treatment of obese mice with SS resulted in a greater reduction in serum leptin and TG levels compared to treatment with the individual compounds (SA and SC). Furthermore, activation of AMP-activated protein kinase α by SS treatment resulted in the suppression of sterol regulatory element-binding proteins (SREBP)-1, leading to the inhibition of acetyl-CoA carboxylase (ACC) expression. Conclusion: Our results suggest that SS may have the potential to prevent obesity through a reduction in the TG and TC levels and regulation of lipogenesis and β-oxidation.
Jun Sik Eom;Seong Min Park;Ji Hoo Park;Dong Hyeon Kim;Sang Bum Kim;Dong Hyun Lim
Journal of The Korean Society of Grassland and Forage Science
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v.44
no.2
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pp.92-98
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2024
The objective of this study was to investigate the comparison of feeding a total mixed ration (TMR) containing imported alfalfa hay and TMR containing hot-air dried domestic alfalfa on rumination activity, milk production, and composition in lactating dairy cows. Ten Holstein dairy cows were divided into two groups: control (imported alfalfa hay + TMR) and treatment (hot-air dried domestic alfalfa + TMR) groups. The study was conducted over a total period of 18 days, including a 13-days adaptation period and a 5-days main experimental period. The results indicated no differences in total digestible nutrient and net energy intake between the imported and hot-air dried alfalfa. Body weight was not significantly different between the two groups (p>0.05), however, total feed intake and rumination time were significantly and tendentially higher in the treatment group compared with control group, respectively (p<0.001; p=0.075). Milk yield was not significantly different between the two groups (p>0.05), however, milk fat (kg) and lactose (%) concentration were significantly higher in the treatment group compared with control group (p=0.016; p=0.02). This study confirms that feeding TMR with hot-air dried domestic alfalfa results in no differences of feed intake, rumination activity, and milk productivity. Therefore, it is considered that hot-air dried domestic alfalfa can be used as a substitute for imported alfalfa on lactating dairy cows.
Jun Sik Eom;Seong Min Park;Ji Hoo Park;Dong Hyeon Kim;Sang Bum Kim;Dong Hyun Lim
Journal of The Korean Society of Grassland and Forage Science
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v.44
no.2
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pp.106-112
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2024
The objective of this study was to compare the feeding effects of imported timothy hay, domestic Italian ryegrass silage (IRGS) and IRG dried by hot-air dry system (IRGHDS) under basic total mixed ration (bTMR) on rumination activity, milk production, and milk composition in lactating dairy cows. Eighteen Holstein dairy cows were divided into three groups: control (bTMR + imported timothy hay), treatment 1 (bTMR + IRGS) and treatment 2 (TMR + IRGHDS) groups. The study was conducted over a total period of 24 days, including a 10 days adaptation period and a 14 days main experimental period. The results indicate body weight was not significantly different between the three groups (p>0.05), and rumination time was significantly higher in the treatment 1 group compared with the control group (p<0.001). Milk fat, protein, and lactose were not significantly different between the three groups (p>0.05), however, somatic cell counts were significantly lower in the treatment 1 group compared with the control group (p<0.001). As a result of the economic feasibility analysis, it is expected that feeding TMR using IRGS and IRGHDS will increase profit by 402.8 won/day and 331.4 won/day per cow compared to imported timothy hay. Therefore, IRGS and IRGHDS can be used as substitutes for imported timothy hay in feeding lactating dairy cows.
Kim, Sang-Uk;Choi, Young-Sun;Yoo, Dae-Joong;Ku, Min-Jung;Lee, Gi-Ho;Park, Sang-Guk
Journal of The Korean Society of Grassland and Forage Science
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v.36
no.4
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pp.350-356
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2016
The objective of this study was to evaluate the effect of different dietary corn levels in Total Mixed Rations (TMR) on growth and meat quality of castrated Korean black goats. For feeding trials, thirty-two castrated Korean black goats with similar age (average of 3 months) and body weight (average of 15.9 kg) were divided into the following four treatment groups: commercial feed (control), TMR containing 15% of corn (T1), TMR containing 25% of corn (T2), and TMR containing 35% of corn (T3) in a randomized complete block design. Final body weight was the highest in T2 (58.9 kg), followed by that in control group (53.1 kg). Average daily gain (ADG) and total dry matter intake (TDMI) were also the highest in T2 (100.2 g and 1,346 g, respectively). However, feed conversion ratio (13.4) was the lowest in T2. Carcass weight and dressing percentage in T2 and T3 were higher than those in the control. For meat quality characteristics, crude fat content was the highest in T2 (6.54%). Cooking loss (15.2%) was the lowest in the control. However, the control had the highest flavor value (5.3%). Oleic acid (C18:l) and palmitic acid (C16:0) were the highest in T2 (48.6% and 22.4%, respectively). Stearic acid (C18:0) was the highest in T1 (14.5%). Unsaturated fatty acid was the highest in the control (58.8%), followed by that in T3 (58.2%), T2 (57.8%), and T1 (54.4%). These results indicate that TMR containing 25% of corn could improve the growth performance and meat quality of castrated Korean black goats.
The study was carried out to investigate the effects of chitosan-adding (0.5-1.5%) on nitrite-reduced (30 ppm) and sodium lactate-reduced (0-2%) sausages to avoid using excessively sodium lacte, which is substituted for sodium nitrite, The number of 24 rats for blood properties were used in this experiment and raised for 1-4 weeks. The color of sausages showed significant differences each treatment (p<0.05) and $a^*$ (redness) had the highest value in control (nitrite 100 ppm) and $b^*$ (yellowness) had the lowest value in T3 (nitrite 30 ppm + sodium lactate 0% + chitosan 1.5%). There were not significant differences in pH (5.53-5.66) and water holding capacity (66.06-69.75%) between control and two treatments (T1, nitrite 30 ppm + sodium lactate 2% + chitosan 0.5%; T2, nitrite 30 ppm +sodium lactate 1% + chitosan 1%), but T3 had significant differences in pH (5.06) and water holding capacity (62.44%), respectively. Springiness, cohesiveness, chewness and adhesiveness in texture analysis had not significant differences between control and three treatments, but hardness and gumminess had lower values in control than in three treatments. Appearance and color in sensory evaluation had higher values in control than in T1, but texture and flavor had lower values than in three treatments. Microbial counts had not significant differences in control, T2 and T3 for 1 week, for 3 weeks, it showed the lowest value in control than in three treatments. Anti-oxidant activity (TBARS) in sausages were more effective in control (p<0.05). The body weigh gain of rat were significantly increased in three treatments and also neutral fat, total cholesterol, LDL-cholesterol were significantly decreased in three treatments. However, T1 treatment had higher blood glucose content and significantly decreased in HDL-cholesterol, compared with control, but T2 and T3 treatments showed similar results in body weight gain and blood properties. So, through the addition of chitosan, it's possible to manufacture nitrite-reduced and sodium lactate-reduced sausage which is supplemented its function.
The purpose of this study was to compare the anthropometry, blood pressure, blood lipid levels, and nutrient intakes in three groups: a group with an impaired fasting blood glucose (IFG) condition (62 males and 30 females); a group with normal blood glucose (73 males and 50 females); and a group with diabetes mellitus (DM) (79 males and 49 females). In male subjects, body mass index (BMI) and obesity index values were significantly higher in the IFG group than in normal and DM groups, but waist/hip ratio (WHR), systolic blood pressure, and diastolic blood pressure were not significantly different from those of the DM group. In female subjects, there was no difference in body weight, BMI, obesity index and WHR values between the IFG and the DM groups. The prevalence of obesity in the IFG group (males 43.6%, females 76.7%) was the highest among the three groups. The percentage of high SBP (40.0%) and high DBP (52.0%) in male subjects of the IFG group was significantly greater than in the DM group or the normal group. In the male subjects, the serum triglyceride concentration was significantly higher in the DM group than in the normal and IFG groups. There was no difference in various nutrient intakes(energy, carbohydrate, protein, fat, calcium, iron, vitamin A and cholesterol) among the three groups. In male subjects, the percentage of energy intake from alcohol was higher in the IFG group (7.0%) than that of the normal (4.5%) and the DM (5.6%) groups. The fasting blood glucose level had a positive correlation with WHR, TG, the athrogenic index and LDL-cholesterol/HDL-cholesterol. This study suggested that the IFG group had a higher obesity index, BMI, blood pressure and serum lipid levels (TG, cholesterol) than the normal or the DM group; furthermore, the IFG group had higher levels of alcohol intake and habits of taking unbalanced diets. Therefore, guidelines for IFG group should emphasize weight control, diet therapy, physical activities and regular balanced diets, in order to prevent diabetes in this group.
Journal of the Korean Society of Food Science and Nutrition
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v.31
no.5
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pp.862-870
/
2002
The purpose of this study is to verify the relation between vegetarian diet and the risk factors of cardiovascular disease. The subjects of the study were 127 Buddhist nuns (age:23~79y) from Oonmoon Temple in Choungdo District Gyeongsang Bookdoo Province and 118 Buddhist nuns practicing Zen meditation at Soodeok Temple in Yeosan District Chongcheong namdoo Province. For control subjects, 235 healthy female adults (age:23~79y) were selected. They were the teachers, the nurses of the hospital of Gyeongsang National university and the housekeepers living in chinju Gyeongsang Namdoo Province. The period of this study was from October 1996 to February 1997. The contents were consisted of food consumption survey, anthropometric measurement, estimating amount of energy expenditure, physical activity and clinical examination. Results were summarized as follows: The mean ages of the subjects were 44.2y for vegetarians and 40.5y for non-vegetarians, respectively. average body mass index (BMI) of vegetarians and non-vegetarians were 22.47 adn 21.08, WHR 0.85 and 0.84, percentage of body fat 28.79 and 26.55 respectively. The average duration of vegetarian diet of the vegetarians was 13.16 years. Levels of total cholesterol, LDL-cholesterol, atherogenic index (AI), diastolic blood pressure, blood sugar and HDL-cholesterol of non-vegetarians were significantly higher (p<0.01) than those of vegetarians, but ration of HDLcholesterol/total-cholesterol was lower in non-vegetarians. In both of subjects, BMI, WHR, RBW, %BF had sig-nificant positive correlations with triglyceride, total cholesterol, LDL-cholesterol and AI. BMI, WHR had sig-nificant positive correlation with systolic blood pressure. BMI, WHR had significant negative correlation with HDL-cholesterol. In summary, vegetable diet can contribute to lowering serum lipid level, atherogenic index (AI),systolic blood pressure, blood sugar.
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