Two experiments were conducted to investigate the effect of germanium biotite (GB) on growth performance, nutrient digestibility and fecal gas emission in pigs. In Exp 1., a total of one hundred nursery pigs (initial body weight 13.12${\pm}$0.15kg) were used in a 21 d growth assay. The five treatments were control (CON, basal diet), GB0.5-200 (basal diet + 0.5% GB, 200mesh), GB1.0-200 (basal diet + 1.0% GB, 200mesh), GB0.5-325 (basal diet + 0.5% GB, 325mesh), GB1.0-325 (basal diet + 1.0% GB, 325mesh). Each treatment had four replicates with five pigs per replicate. ADG, ADFI and gain/feed were not significantly different among the treatments. Fecal NH3-N concentration of pigs fed the GB325 diet was lower than that of pigs fed the GB200 diet (P=0.01). The GB treatments reduced fecal volatile fatty acids significantly compared to the CON (propionic acid, P=0.01; butyric acid, P=0.01; acetic acid, P=0.02). Especially, fecal propionic acid concentration of pigs fed the GB325 diets was lower than that of pigs fed the GB200 diets (P=0.02). In Exp 2., a total of seventy five pigs (initial body weight 21.18${\pm}$0.15kg) were used in a 28 d growth assay. The treatments were same as described for Exp. 1. Each treatment had five replicates with three pigs per replicate. The GB1.0 treatments significantly increased the ADG compared to the GB0.5 treatments (P=0.03). The DM and N digestibility of pigs fed the GB1.0 diets were higher than that for pigs fed the GB0.5 diets (P=0.01). Also, the Ca digestibility of pigs fed the GB diets was higher than that for pigs fed the CON diets (P=0.01). The fecal NH3-N concentrations for the GB treatments were lower than that for the CON (P=0.01). The GB325 treatments significantly decreased the fecal NH3-N concentration compared to the GB200 treatments (P=0.03). The fecal butyric acid concentration for the GB325 treatments was lower than that for the GB200 treatment (P=0.04). In conclusion, the results obtained from these feeding trials suggest that the dietary GB for nursery pigs affects fecal noxious gas emission. In growing pigs, dietary GB was effective to improve ADG and decrease fecal noxious gas emission.
Kim Y.S.;Song S.H.;Cho S.K.;Kwack D.O.;Kim C.W.;Park C.S.;Chung K.H.
Journal of Embryo Transfer
/
v.21
no.2
/
pp.101-107
/
2006
The objective of this study was to investigative the effects of retinol supplement to IVM and/or IVC medium on maturation, fertilization and development of pig oocytes. North Carolina State University (NCSU) 23 medium containing porcine follicular fluid (pFF) was used as base medium. Each 1 uM, 5 uM and 10 uM concentration of retinol was supplemented to IVM and /or IVC medium. When the retinol was supplemented to maturation medium, the maturation rates were not different (p>0.05) among treatment groups ($66.7{\pm}6.0{\sim}69.2{\pm}5.3%$), but the developmental rate to blastocyst stage was higher (p<0.05) in $5{\mu}M$ group ($20.4{\pm}2.6%$) than in 0 uM ($13.6{\pm}2.1%$) and 10 uM groups ($9.7{\pm}1.7%$). Moreover, total cell number was significantly greater (p<0.05) in the 5 uM group ($37.0{\pm}1.6$) than in the other groups ($29.8{\pm}1.0{\sim}33.2{\pm}1.0$). Retinol supplement to maturation medium did not significantly affect the rates of fertilization and polyspermy (p>0.05). When the retinol was supplemented to culture medium or both maturation and culture medium, the rates of cleavage, and develop to morula and blastocyst stage were not affected, while those of 10 uM group were significantly decreased (p<0.05). These results indicate that 5 uM retinol supplement in maturation medium significantly stimulates embryo development, also improves the total cell number of blastocyst stage in pig.
Park H. S.;Kim T. S.;Jung S. Y.;Lee Y. H.;Jung J. Y.
Journal of Embryo Transfer
/
v.20
no.2
/
pp.105-112
/
2005
The present study was conducted to examine some factors affecting in vitro development of oocytes from somatic cell nuclear transfer (SCNT) in Korean native goats. Recipient oocytes were surgically collected after superovulation by using CIDR and FSH, PMSG, hCG and estrous synchronization in Korean Native goats. For nuclear transfer, the fibroblasts from caprine ear cells and fetal fibroblasts were surgically harvested and were cultured in vitro until cell confluency in serum-starvation condition (TCM-199 + $0.5\%$ FBS) for 3 to 5 days. The zona pellucidae of matured oocytes were partially drilled by laser irradiation. A single somatic cell was individually transferred into each enucleated oocyte. The reconstructed oocytes were then electrically fused and activated. Activated NT embryos were cultured in mSOF medium supplemented with $0.8\%\;BSA\;6\~7\;day\;at\;39^{\circ}C,\;5\%\;CO_2,\;5\%\;O_2,\;90\%\;N_2$ in air. There were no significant difference in the number of embryos cleaved and 4-cell development between the fibroblast nuclei from mature ear cells and fetal cells, but the rate of 8-cell development was higher (P<0.05) in ear cells $(40.5\%)$ than in fetal cells $(55.5\%)$. However, the embryo development to morula or blastocyst was not significantly different between both the groups$(6.7\%\;vs\;16.0\%)$, respectively. The number of embryo cleaved $(79.0\%)$ were higher (P<0.05) in the oocytes activated with ionomycin+6-DMAP than in the oocytes activated electrically $(9.5\%)$. The development of fused embryos to morula or blastocyst was found $15.6\%$ in ionomycin+6-DMAP, but no morula or blastocysts were developed in electrical stimulation. The development rate of SCNT embryos to morula or blastocyst was love. (P<0.05) in SCNT embryos $(19.0\%\;vs\;0.0\%)$ than that in parthenotes $(66.1\%\;vs\;59.1\%)$. In the parthenotes, the cleavage rate and development to morula or blastocyst were significantly higher (P<0.05) as $86.8\%\;and\;50.0\%$ in ovulated oocytes than in follicular oocytes $(69.0\%\;vs\;23.6\%)$, respectively. These results suggest that some factors Including superovulation treatment, oocyte source, maturation of follicular oocytes, activation method and culture condition may affect in vitro developmental capability of embryos produced by somatic cell nuclear transfer in Korean Native goats, and the fusion rate be greatly low compared with other species.
The effect of nitric oxide (NO) treatment on the quality of kiwifruit, cv. Hayward, was studied at room temperature after cold storage for one or three months at $0^{\circ}C$. Kiwifruits cold-stored for one month were treated with $200{\mu}L{\cdot}L^{-1}$ NO and subsequently transferred to room temperature to monitor quality changes over the course of their shelf life. Weight loss was high in fruits not treated with NO. Ethylene production was delayed for two days by NO treatment, and respiration rate was reduced to less half than that of the control. The kiwifruits stored for three months were treated with $N_2$ and 100, 200, or $500{\mu}L{\cdot}L^{-1}$ NO, or air alone. The highest weight loss was observed in kiwifruit treated with $100{\mu}L{\cdot}L^{-1}$ NO. While ethylene production was high in fruits treated with $100{\mu}L{\cdot}L^{-1}$ NO and without the treatment, it was relatively low in the kiwifruit treated with 200 and $500{\mu}L{\cdot}L^{-1}$ NO. Firmness was abruptly decreased in fruits not treated with NO, while the kiwifruit exposed to $200{\mu}L{\cdot}L^{-1}$ NO maintained the s ame level of f irmness for 9 days a t room t emp erature. In addition, growth o f Botrytis cinerea was inhibited by NO as compared with the air and $N_2$ treatments. Our findings indicate that NO can be used effectively for prolonging shelf life and maintaining fruit quality during distribution after cold storage. The optimum NO concentration for cold-stored kiwifruits was found to be $200{\mu}L{\cdot}L^{-1}$.
Lee, Ki Yeon;Kim, Tae hee;Kim, Jai Eun;Bae, Son wha;Park, A-Reum;Lee, Hyo Young;Choi, Sun jin;Park, Jong yeol;Kwon, Soon bae;Kim, Hee Yeon
Journal of Food Hygiene and Safety
/
v.35
no.1
/
pp.93-101
/
2020
Seakso 1, a maize hybrid, was developed in 2008 by Gangwon Agricultural Research and Extension Services in Korea and registered in 2011. It is single-cross hybrid, semi-flint, deep-purple variety of corn, variety of are yellow, while the husks and cobs are purple. Due to the sensitivity of Seakso 1 to excess moisture after seeding, water supply should be carefully managed, and it should be harvested at a suitable time to obtain the highest anthocyanin content. This study investigated the hepatoprotective effect of Saekso 1 corn husk and cob extracts (EHCS) in oleic acid-induced non-alcoholic fatty liver disease (NAFLD) in HepG2 cells. EHCS showed a high level of lipid accumulation inhibiting effect. EHCS also suppressed triglyceride accumulation and inhibited expression of lipid marker genes, such as sterol regulatory element binding protein-1c (SREBP-1c) and sterol regulatory element binding protein-1a (SREBP-1a). Analysis by western blot of the expression of p-AMPK, p-SREBP1, PPARα, and FAS proteins showed that the incidence of SREBP1 protein, a major factor involved in lipid metabolism in the liver, has decreased significantly after treatment with the extracts. Moreover, the protein-induced expression of FAS, a major enzyme involved in the biosynthetic pathways of fatty acids, was decreased significantly in all concentrations. These results suggest that EHCS is a potent agent for the treatment of NAFLD.
This study was initiated to evaluate the Phosphorus(P) leaching potential in the putting green soils and P uptake by the turfgrass in the golf course using the P fertilizers. The turfgrass, Floradwarf bermudagrass(Cynodon dactylon L. PERS,) was planted and grown in the mixture of sand and peat moss in this lysimeter study. Five representative P fertilizers, such as, ammonium polyphosphate (APP), monopotassium phosphate (MKP), MAP(monoammonium phosphate), 0-20-20(liquid), and concentrated superphosphate(CSP, solid) were used in this study. Based on the total P quantity of leachate collected during the whole 12 weeks, MKP and APP are the first group of P fertilizers contributing to the leaching of P, then MAP and 0-20-20 are the second group of P fertilizers causing the P leaching. Finally, CSP is the third group of P fertilizer resulting in the P leaching. However, most of P applied and collected in the lysimeter were leached during the first period of two and four weeks, compared to that of P leached during the second period of six, eight, ten, and twelve weeks. Applications of MAP, APP and CSP, MKP and 0-20-20 in order produced the largest amount of total dry matter. However, APP, MKP and MAP, CSP and 0-20-20 in order showed the largest amount of P uptake. Therefore, based on the data of P leaching, dry matter production, and plant P uptake, it appears that CSP, 0-20-20, and MAP are the environmentally sound fertilizers recommended in the turfgrass putting green soil of golf course.
Statement of problem & Purpose: To study the effect of different fluoridation methods after in-office bleaching on the color of teeth during severe staining with coffee. Material and methods: 44 specimens were randomly divided into four groups. Group 1 (no bleaching, no fluoride, coffee) was served as control for the influence of coffee on the color of untreated teeth. Group 2, 3 and 4 were undergone bleaching with 35% $H_2O_2$ for 30 minutes a day on 3 consecutive days. Group 2 was remained without fluoridation. Group 3 and 4 were fluoridated for 1 hour with either Cavity shield$^{(R)}$ or pH 7 Gel$^{(R)}$. All of groups were immersed in coffee solution for 7 days. Color determination was accomplished using the spectrophotometer (VITA Easyshade$^{(R)}$). Results: ${\Delta}L$ and ${\Delta}h$ increased, whereas ${\Delta}C$ decreased in the bleached groups. Pairwise comparisons with Tukey's HSD showed that there were statistically significant differences for ${\Delta}L$ and ${\Delta}h$ between the bleached groups and the non-bleached group (P < .05). ${\Delta}L$ and ${\Delta}h$ decreased continuously, while ${\Delta}C$ showed an increase after a decrease in all of groups during immersion in coffee solution. After immersion in coffee solution for 7 days there were no statistically significant differences for ${\Delta}L$, ${\Delta}C$ and ${\Delta}h$ between the groups (P > .05). Also there were no statistically significant differences for ${\Delta}L$, ${\Delta}C$ and ${\Delta}h$ between the group 3 treated with Cavity shield. and the group 4 treated with pH 7 Gel. (P > .05). Conclusion: It was concluded that fluoridation was not beneficial to the prevention of extrinsic stains after bleaching.
Journal of the korean academy of Pediatric Dentistry
/
v.38
no.1
/
pp.33-41
/
2011
The objective of this study was to compare the shear bond strengths of five dentin adhesive systems cured with three different light curing sources. Seventy five noncarious permanent teeth were collected and stored in an 0.1% thymol solution at room temperature after extraction. The tested adhesives were: Adper Scotchbond Multi-purpose Plus Adhesive (SM) Adper Single bond 2 (SB), Clearfil SE Bond (SE), Adper Prompt L-Pop (PL), G-Bond (GB). And three light curing unit systems were used: Elipar Free light 2(LED), OptiLux 501 (Halogen), Flipo (PAC). For the shear bonding test, the labial and lingual surfaces of permanent teeth were used. To obtain a flat dentin surface, the labial and lingual surfaces of the teeth were sanded on SiO2 with number 600 grit and then divided into 15 groups of 10 surfaces each. All samples were theromocycled in water $5^{\circ}C$ and $55^{\circ}C$ for 1000 cycles. The results were as follows: 1. When cured with Freelight 2, the shear bond strength of SM was significantly higher than that of PL, GB (p<0.05), whereas no significant difference was found among those of any other bonding agents. 2. When cured with Optilux 501, the shear bond strength of SM was significantly higher than those of any other bonding agents (p<0.05), whereas no singnificant difference was found among those of andy other bonding agents. 3. When cured with Flipo, the shear bond strength of SM was significantly higher than those of SB, SE, GB (p<0.05), whereas no significant differences was found among those of any other bonding agents. 4. For comparison according to three different light cure unit system, except SB and GB, each three dentin bonding agents showed no significant difference. For SB, only Freelight 2 was significantly higher than the others, with no significant difference between Optilux 501 and Flip. For GB, Statistically significant difference was found only between Freelight and Flipo.
Ji, Seung-Cheol;Takaoka, Osamu;Seoka, Manabu;Kohbara, Jun;Hosokawa, Hidetuyo;Shimeno, Sadao;Jeong, Gwan-Sik;Lee, Si-Woo;Takii, Kenji
Journal of Aquaculture
/
v.20
no.1
/
pp.19-25
/
2007
For establishing a basal diet for the Pacific bluefin tuna Thunnus orientalis (PBT), feeding stimulants were initially identified by omission test using the synthetic extract of horse mackerel, Trachurus japonicus. Four feeding trials were conducted using juvenile PBT weighing $9.0{\pm}0.91\;g$ (trial 1, 2 and 3) and $1.6{\pm}0.23\;g$ (trial 4), which were originated from an artificial seedling production. The fish fed the casein diet with each test solution were added at the ratio of 100 g casein diet to 100 g jack mackerel muscle. A complete synthetic extract of jack mackerel containing all 3 fractions, amino acid, nucleotide and organic nitrogenous base, exhibited a comparable feeding stimulant activity compared to that of natural extract. The omission of nucleotide or amino acid fraction showed lower feeding activity, but the omission of other nitrogenous fraction maintained a similar feeding stimulant activity compared to that of the synthetic extract (trial 1). Inosine-5' monophosphate $Na_2$ (IMP) was identified as a major constituent for maintaining feeding activity. The mixture of L-alanine, L-glutamic acid, L-histidine, L-lysine, taurine and IMP induced a similar feeding activity compared to that of the synthetic extract (trial 2 and 3). In trial 4, the highest feeding activity was finally obtained in the mixture of L-histidine, L-glutamine and IMP, followed by the synthetic extract, the mixture of L-lysine, L-alanine and IMP, IMP and the mixture of L-histidine, L-glutamic acid, L-lysine and L-alanine. These results revealed that the mixture of L-histidine, L-glutamic acid and IMP for the proper feeding stimulant of PBT in this study.
Koh, Won-Jung;Kwon, O Jung;Kang, Eun Hae;Jeon, Ik Soo;Pyun, Yu Jang;Ham, Hyoung Suk;Suh, Gee Young;Chung, Man Pyo;Kim, Hojoong;Han, Daehee;Kim, Tae Sung;Lee, Kyung Soo
Tuberculosis and Respiratory Diseases
/
v.54
no.1
/
pp.45-56
/
2003
Background : Mycobacterium abscessus is the most common respiratory pathogen in rapidly growing mycobacteria and is resistant to all of the first-line antituberculosis drugs. This report describes the clinical and radiographic characteristics in patients with pulmonary disease caused by M. abscessus. Materials and Methods : Twelve patients with pulmonary disease caused by M. abscessus who fulfilled the 1997 American Thoracic Society diagnostic criteria for a nontuberculous mycobacterial pulmonary infection were observed over a five-and-a-half year period. The clinical characteristics and chest radiographic findings were analyzed, retrospectively. Results : The patients were predominantly female(11/12, 92%) and nonsmokers(12/12, 100%). Coughing (10/12, 83%), sputum(10/12, 83%) and hemoptysis(10/12, 83%) were the common symptoms and they had prolonged periods from the onset of symptoms to the diagnosis of their disease(median 6.5 years). Eleven (92%) patients had a previous history of being treated for pulmonary tuberculosis. The sputum specimens were acid-fast bacilli smear-positive in all patients. All patients were administered antituberculosis drugs. Six (50%) patients were treated with second-line antituberculosis drugs on account of persistent smear-positive sputum specimens. The chest radiographs showed that reticulonodular opacities(11/12, 92%) were the most common pattern of abnormality, followed by cavitary lesions(5/12, 42%). The computed tomography findings suggested bronchiolitis from the centrilobular nodules with a tree-in-bud appearances(9/10, 90%) and bronchiectasis (9/10, 90%) were the most common, followed by well-defined nodules smaller than 10-mm in diameter(7/10, 70%). Conclusions : M. abscessus pulmonary disease should be recognized as a cause of chronic mycobacterial lung disease, and respiratory isolates should be assessed carefully.
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