zamiul rashid

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Exposure pathways and ecological risk assessment of common veterinary antibiotics in the environment through poultry litter in Bangladesh

Journal of Environmental Science and Health, Part B, 2020

Veterinary antibiotics (VAs) have entered the ecosystem principally through the application of or... more Veterinary antibiotics (VAs) have entered the ecosystem principally through the application of organic fertilizer. However, factors influencing the contributions made by the prescribers and users thereof with respect to VAs in poultry manure have not been investigated. The purpose of this paper, therefore, is to identify factors associated with the VA prescription and usage as well as to measure the residual concentration along with the ecological risk of common VAs in poultry litter in Bangladesh. Structured questionnaire surveys were conducted so as to provide an understanding the perspective of prescribers and farmers. Ciprofloxacin (CIP), enrofloxacin (ENR), oxytetracycline (OTC), and doxycycline (DOX) were screened through the use of thin-layer chromatography (TLC) and quantified through high-performance liquid chromatography (HPLC). Also, methods of risk quotient (RQ) were applied to assess ecotoxicity. Most VAs were prescribed without a confirmatory diagnosis. The residue of ...

CNS Depressant and Antinociceptive Activities of the Aerial Parts of Mimosa pudica

2 Abstract: Mimosa pudica is used in folk medicine in the management of diabetes, diarrhea and in... more 2 Abstract: Mimosa pudica is used in folk medicine in the management of diabetes, diarrhea and inflammation. The present study was designed to evaluate the central nervous system (CNS) depressant and antinociceptive activity of the methanolic extract of the aerial parts of Mimosa pudica (MAMP). CNS depressant study of the extract (100 and 200 mg/kg, p.o.) was done by open field and hole cross test whereas acetic acid writhing test and formalin induced pain was done for antinociceptive activity. A statistically significant (p<0.05) decrease in locomotor activity was observed at all doses in the open-field and hole-cross tests. The extract significantly (p<0.05) and dose dependently reduced the writhing reflex in the acetic acid-induced writhing test as well as linking response in the formalin induced inflammatory pain. The finding of this study suggested that Mimosa pudica possesses good CNS depressant activity along with high antinociceptive activity provide in part scientific...

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Screening of antibiotic residues in chicken meat in Bangladesh by thin layer chromatography

Journal of Advanced Veterinary and Animal Research, 2018

Objective: Screening of antibiotic residues in broiler chicken meat and liver collected from farm... more Objective: Screening of antibiotic residues in broiler chicken meat and liver collected from farms and local markets in Bangladesh. Materials and methods: A total of 160 samples (breast, thigh muscle and liver) were collected from markets and farms from different region of Bangladesh. PBS buffer system with trichloracetic acid and diethyl ether based sample extraction was performed. For comparison the standard antibiotics; Ciprofloxacin (CIP), Enrofloxacin (ENR), Oxytetracycline (OTC), Amoxicillin (AMOX) and Doxycycline (DOX) were prepared by dissolving in methanol. Samples were pointed on TLC plates transferred to TLC tank containing acetone-methanol (1:1) as mobile phase. Retention factor (Rf) was calculated after observing the chromatograms on UV light at 256 nm. Same Rf value of standard and sample considered similar compound. Results: Liver sample were mostly positive for antibiotics residue followed by thigh muscles and breast muscle. The frequency of antibiotic residues was highest in liver followed by thigh muscles and breast muscle. Among the antibiotics CIP ranked top in all types of sample. In breast muscle highest antibiotic was CIP (39%) followed by DOX (26%), AMOX (24%), OTC (23%) and lowest was ENR (21%). In thigh muscle, 42, 29, 28, 27 and 24% sample was positive for CIP, OTC, DOX, AMOX and ENR, respectively. Highest number of liver samples were shown positive result for all screened antibiotics (CIP-52%, OTC-46%, DOX-43%, AMOX-42% and ENR-36%). Conclusion: This study ascertained those antibiotics residues are present in chicken muscle and liver which causes serious health hazards to consumers. So proper steps should be taken to control emergence of antibiotic resistance in human being as well as in the environment.

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Exposure pathways and ecological risk assessment of common veterinary antibiotics in the environment through poultry litter in Bangladesh

Journal of Environmental Science and Health, Part B, 2020

CNS Depressant and Antinociceptive Activities of the Aerial Parts of Mimosa pudica

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Screening of antibiotic residues in chicken meat in Bangladesh by thin layer chromatography

Journal of Advanced Veterinary and Animal Research, 2018

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