• Title, Summary, Keyword: chlortetracycline

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Effects of Dietary Supplementation with Galla Rhois on Growth Performance and Diarrhea Incidence in Postweaning Piglets (이유자돈에 있어서 성장증체 및 설사발생에 미치는 오배자의 급여 효과)

  • Cha, Chun-Nam;Yu, Eun-Ah;Park, Eun-Kee;Kim, Suk;Lee, Hu-Jang
    • Journal of Veterinary Clinics
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    • v.30 no.5
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    • pp.353-358
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    • 2013
  • A study investigated the effects of Galla Rhois (GR) on growth performance and diarrhea incidence of postweaning piglets. One hundred 28-day-old piglets were randomly assigned into five experimental groups, which were a basal diet alone (NC), chlortetracycline 0.3 g/kg feed (PC) and supplemented with GR 1.0 g/kg feed (GR 1), GR 2.0 g/kg feed (GR 2), and GR 4.0 g/kg feed (GR 3). After 28 days of administration, final body weight (BW) and feed conversion ratio of PC, GR 2 and GR 3 was significantly different compared to those of NC (p < 0.05). Additionally, the average daily gain (ADG) and average daily feed intake (ADFI) of PC and all groups treated with GR was significantly different compared to those of NC (p < 0.05). Especially, final BW, ADG, ADFI and feed conversion ratio (FCR) of GR 2 and GR 3 were not significant different compared to those of PC. In fecal scores and duration of diarrhea, PC and all groups treated with GR were significantly different compared to NC (p < 0.05). In hematogolical and serum biochemical analysis, there were no significant differences in any of the hematogolical and serum biochemical parameters examined in either NC or all groups treated with GR. The results of this study indicated that GR could be a potential candidate as feed additives for the improvement of growth performance and incidence of diarrhea in piglets.

Monitoring of Selected Veterinary Antibiotics in Animal Carcass Disposal Site and Adjacent Agricultural Soil (가축매몰지 및 인근 농경지의 축산용 잔류 항생제 모니터링)

  • Lim, Jung Eun;Rajapaksha, Anushka Upamali;Jeong, Se Hee;Kim, Sung Chul;Kim, Kye Hoon;Lee, Sang Soo;Ok, Yong Sik
    • Journal of Applied Biological Chemistry
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    • v.57 no.3
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    • pp.189-196
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    • 2014
  • In Korea, over 4,700 animal carcass disposal sites were installed until 2011 due to the outbreak of foot and mouth disease. Due to the putrefaction of buried animals, the leachate containing veterinary antibiotics may release into surrounding environments. Antibiotic residues in the environment cause the formation of antibiotic resistance bacteria threatening human and ecosystem health. This study reports the concentrations of five antibiotics, including tetracycline (TC), chlortetracycline (CTC), oxytetracycline (OTC), sulfamethazine (SMZ), and sulfamethoxazole (SMX), in soils from animal carcass disposal site and adjacent agricultural field. Concentrations of antibiotics at animal carcass disposal sites (TC: $144.26-350.73{\mu}g/kg$, SMZ: $17.72-44.94{\mu}g/kg$) were higher than those at agricultural field (TC: $134.16-320.73{\mu}g/kg$, SMZ: $6.48-8.85{\mu}g/kg$) whereas the concentrations of CTC, OTC, and SMX were below detection limit in both sites. Results showed that the antibiotics in animal carcass site might leach to the soil and possibly contaminating the groundwater. Future studies will focus on the transfer of antibiotics residues into food crops.

Decline in Extractable Veterinary Antibiotics in Chicken Manure-Based Composts during Composting (계분을 원료로 한 퇴비의 퇴비화 과정 중 동물용 항생물질 농도저감)

  • Kwon, Soon-Ik;Jang, Yeon-A;Kim, Kye-Hoon;Kim, Min-Kyeong;Jung, Goo-Bok;Hong, Seung-Chang;Chae, Mi-Jin;So, Kyu-Ho;Kim, Kwon-Rae
    • Korean Journal of Soil Science and Fertilizer
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    • v.45 no.4
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    • pp.628-634
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    • 2012
  • Release of veterinary antibiotics (VSs) to agricultural environment through application of animal manure and/or animal manure-based composts to soils is of concern. The current study was conducted to examine decline of VAs during composting the chicken manure. For this, antibiotics free chicken manure (20 kg) and sawdust (10 kg) were added to the bench-scale composting apparatus and then the mixed material was spiked simultaneously with three VAs (chlortetracycline, CTC; sulfamethazine, SMZ; tylosin, TYL) at two different levels (10 and $20mg\;kg^{-1}$). Then the decline of VAs was determined using Charm II system during 53 composting period. For comparison, composting only chicken manure was included at VAs concentration of $10mg\;kg^{-1}$. During composting, the concentration of all three different VAs declined below the prospective guideline values ($0.8mg\;kg^{-1}$ for CTC, $0.2mg\;kg^{-1}$ for SMZ, and $1.0mg\;kg^{-1}$ for TYL) except CTC at $20mg\;kg^{-1}$ spiking when the chicken manure was composted together with sawdust. Interestingly, CTC at $10mg\;kg^{-1}$ spiking appeared to be declined under the guideline value without sawdust while SMZ was resistant to be declined without sawdust. Unlike CTC and SMZ, TYL showed immediate decline right after spiking TYL to composting materials regardless the spiking concentration and existence of sawdust. Appropriate composting procedure of chicken manure was able to decline the residual VAs in the manure below the prospective guideline value and the importance of organic substances on this decline was perceived.

Effects of Feeding a Combination of Probiotics Containing Lactobacillus plantarum and Bacillus Subtilis on Immune Response and Diarrhea Incidence in Post-weaning Piglets (이유자돈에 대한 Lactobacillus plantarum과 Bacillus subtilis 합제 투여에 따른 면역반응과 설사발생에 미치는 효과)

  • Park, Eun-Kee;Yoo, Eun-Ah;Cha, Chun-Nam;Tutkun, Engin;Kim, Suk;Lee, Hu-Jang
    • Journal of Veterinary Clinics
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    • v.30 no.6
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    • pp.459-463
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    • 2013
  • A study investigated the effects of a mixture of Lactobacillus plantarum (L. plantarum) and Bacillus subtilis (B. subtilis) on diarrhea incidence, immune response, and fecal microflora counts in post-weaning piglets. One hundred 28-day-old piglets were randomly assigned to five treatment groups: negative control (NC), free of antibiotics; positive control (PC), 0.03% chlortetracycline; LB 1, a mixture of L. plantarum and B. subtilis (LB) 0.5 kg/ton feed; LB 2, LB 1.0 kg/ton feed; and LB 3, LB 2.0 kg/ton feed. Diarrhea scores for LB 2 and LB 3 from the 2nd week were significantly reduced compared to NC (P<0.05). In terms of the level of IgG and IFN-${\gamma}$, all treatment groups were significantly higher than NC (P<0.05), and the IgG level of LB 3 was significantly higher than that of PC (P<0.05). Furthermore, fecal lactic acid bacteria (LAB) counts for LB 2 and LB 3 were significantly higher than those of NC and PC (P<0.05). In addition, fecal Enterobacteriaceae (ENT) counts for PC, LB 2 and LB 3 were significantly lower than those of NC (P<0.05). Based on the results from this study, it was concluded that a combination of L. plantarum and B. subtilis strains could be used as potential alternatives to antibiotics to prevent diarrhea incidence in piglets.

Simultaneous Determination of Tetracycline Antibiotics by 3-Phase Hollow Fiber-Liquid Phase Microextraction (HF-LPME) and HPLC-UV/Vis (3-상 속빈 섬유-액체상 미량추출법(HF-LPME)과 HPLC-UV/Vis을 이용한 Tetracycline류 항생제 동시분석)

  • Oh, Woong Kyo;Myung, Seung-Woon
    • Journal of the Korean Chemical Society
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    • v.58 no.6
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    • pp.535-542
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    • 2014
  • A simple and efficient preconcentration method was developed using three-phase liquid phase microextraction prior to HPLC-UV for simultaneous extraction and determination of tetracycline antibiotics (tetracycline, oxytetracycline, and chlortetracycline). The tetracycline antibiotics were separated simultaneously on a column ($C_8$, $3.0{\times}150mm$, $3{\mu}m$) with high selectivity and sensitivity using gradient elution. Under optimized conditions (extraction solvent, heptanal; pH of donor, 9.0; pH of acceptor, 1.0; stirring speed, 700 rpm; NaCl salt, 0%; and extraction time, 60 min), enrichment factors (EF) were between 5.6 and 22.3. The limit of detection (LOD) and limit of quantitation (LOQ) in the spiked urine matrix were in the concentration range of $0.08{\sim}0.8{\mu}g/mL$ and $0.4{\sim}1.6{\mu}g/mL$, respectively. The calibration curves were linear within the range of $0.1{\sim}32{\mu}g/mL$ with the square of the correlation coefficient being more than 0.995. The precision (as a relative standard deviation, RSD) and accuracy (as a relative recovery) within working range were 1.3~9.1% and 84~118%, respectively.

Comparison of antibiotic residues on beef and pork carcass in Seoul (서울지역의 도축 소, 돼지 지육에서의 잔류물질 비교 조사)

  • Lim, Hong-Kyu;Choi, Tae-Suk;Yun, Eun-Sun;Lee, Joo-Hyung;Ki, No-Joon;Lee, Jung-Hark
    • Korean Journal of Veterinary Service
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    • v.26 no.2
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    • pp.113-119
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    • 2003
  • This study was carried out to compare the antibiotic residues in the muscles of cattle and pigs from slaughter-houses in Seoul from 2000 to 2002 by EEC-4-plate, Charm II and HPLC methods. The results were summarized as follows; 1. Residual materials were detected from 41 samples(0.6%) by EEC-4-plate method from random sampling and 38 samples(12%) by Charm II method from directed sampling. 2. Violation rates were 0.3% by monitoring and 4.7% by surveillance program. 3. The 35 samples were classified as tetracyclines 30(86%), sulfonamides 4(11%), ${\beta}$-lactams 1(3%) and two samples simultaneously determined oxyteracycline plus sulfadimetoxine, and sulfamerazine plus sulfadimetoxine. 4. The highest residual concentration(ppm) of chlortetracycline, oxytetracyline, sulfamethazine, sufadimetoxine and penicillin were 0.5, 12.0, 6.4, 2.6 and 0.44, respectively.

Comparison of pretreatment methods for tetracyclines analysis by HPLC (테트라싸이클린계 잔류항생물질 분석을 위한 전처리방법 비교)

  • Kim, Dong-Eon;Hwang, Lae-Hwong;Yun, En-Sun;Ham, Hee-Jin;Yang, Yoon-Mo;Kim, Chang-Gi;Ki, No-Jun;Lee, Jung-Hark
    • Korean Journal of Veterinary Service
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    • v.26 no.3
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    • pp.199-202
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    • 2003
  • Solid phase extraction(SPE) and matrix solid phase dispersion(MSPD) have been studied as preparation procedures for tetracyclines analysis by high-performance liquid chromatography(HPLC) in meat. The recovery range was 74${\sim}$98% for SPE, and 72${\sim}$93% for MSPD at spiked levels of 100ng/g for oxytetracycline(OTC), tetracycline(TC), chlortetracycline(CTC), and doxycycline(DC). The detection limits were 15${\sim}$78ng/g for SPE and 25${\sim}$84ng/g for MSPD, respectively. Analytical method was HPLC with UV detector. The purpose of this study was developing a practical, accurate and precise method for rapid extraction and quantitation of tetracycline residues in meat.

Sensitivity of Bordetella bronchise ptica Isolated from Pigs Affected by Infectious Atrophic Rhinitis to Chemotherapeutic Agents (전염성위축성비염돈(傳染性萎縮性鼻炎豚)으로부터 분리(分離)한 Bordetella bronchiseptica의 화학요법제(化學療法劑)에 대(對)한 감수성시험(感受性試驗))

  • Kang, Byong Kyu
    • Korean Journal of Veterinary Research
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    • v.20 no.2
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    • pp.159-165
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    • 1980
  • A total of 98 strains of Bordetella bronckiseptica isolated from pigs affected the infectious atrophic rhinitis(AR) during 1978 were surveyed for drug sensitivity to 26 chemotherapeutic agents, and minimum inhibitory concentration(MIC), incidence rate of resistant strain and resistant patern from the strains which were obtained from the different pig farm in Jeonnam province were examined. The results obtained are summarized as follows. 1. Most of the strains tested were resistant to Ampicillin (AB, PC), spiramycin(SPO, sulfa drugs (SD) (MIC:$400.0{{\mu}g/ml}$) and streptomycin(SM) (MIC:$200.0{{\mu}g/ml}$). Of the 75.0% of strains were also resistant to penicillin(PC) (MIC:$200.0{{\mu}g/ml}$) and of the 14.3 of strains were inhibited to grow to tetracycline(TC), chlortetracycline(CTC), oxytetracyc-line(OTC), erythromycin(EM), tylosin(TS), leucomycin (LM) and chloramphenicol (CP) (MIC:$6.25{{\mu}g/ml}$). On the other hand, most of the strains tested were inhibited to grow to kanamycin(KM), gentamycin(GM) neomycin(NM) (MIC:$25.0{{\mu}g/ml}$) and to colistin(CL) (MIC:$12.5{{\mu}g/ml}$). 2. Incidence rate of resistant strains to main chemotherapeutic agents was 100.0% of sulfa drugs, 96.4% of streptomycin, 85.7% of penicillin, tetracycline, chloramphenicol and erythromycin, 46.4% of gentamycin, 17.9% of colistin and 0.0% of kanamycin and nalidixic acid.

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Evaluation of neutral red uptake assay using Balb/c 3T3 cells as a screening test to predict skin phototoxicity potential

  • Lee, Jong-Kwon;Lee, Eun-Hee;Kim, Ju-Hwan;Hong, Jin-Tae;Kim, Hyung-Soo;Park, Ki-Sook;Ahn, Kwang-Soo;Cho, Dae-Hyun;Lee, Sun-Hee
    • Proceedings of the Korean Society of Toxicology Conference
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    • pp.109-109
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    • 2001
  • In order to evaluate the neutral red uptake assay as an alternative method for phototoxicity test, we compared the potential of phototoxicity in vitro in cultured human fibroblasts and 3T3 fibroblast cells derived from Balb/c mice. Both fibroblasts were exposed to various known phototoxic chemicals (promethazine, neutral red, chlorpromazine, chlortetracycline, amiodarone, bithionol, 8-methoxypsoralen) and non-phototoxic chemical (ammonium laureth sulfate) and irradiated with 5 J/cm$^2$ of UVA.(omitted)

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Comparison of residual antibiotic materials in meet -Slaughtered cattle and swine in Seoul- (식육중 잔류항균물질 비교 조사 -서울지역 도축 소와 돼지를 중심으로-)

  • 변정옥;강영일;이달주;황래홍;이양수;이병동
    • Korean Journal of Veterinary Service
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    • v.25 no.3
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    • pp.229-236
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    • 2002
  • This study was carried out to compare the residual antibiotic materials in muscles of slaughter cattle and swine from slaughterhouses in Seoul from 2000 to 2001 by EEC-4-plate method, Charm II and HPLC method. 1. Residual antibiotic materials were detected from 95 samples(0.8%) by EEC-4-plate and 57 samples(10.2%) by Charm II. The final HPLC method determined the positives are 43(45.3%) and 27(47.3%) respectively. 2. The detection ratios were 45% by EEC-4-plate and 47% by Charm II. 3. Seventy samples were classified as tetracyclines 56(75.7.4%), sulfonamides 10(14.9%), $\beta$-lactam 6(8.1%) chloramphenicol 1(1.4%). Three of them were confirmed to be positive simmultaneously for tetracyclines, sulfonamides and chloramphenicol. 4. The highest residual concentration of chlortetracycline, oxytetracycline, sulfamethazine, sulfadimethoxine, sulfaquinoxaline, penicillin, ampicillin and chloramphenicol were 0.34, 11.29, 68.16, 0.13, 4.0, 0.12, 0.4 and 0.04ppm, respectively.