Anderson Munengwa
Marondera University of Agricultural Sciences and Technology

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Perceptions and practices on antimicrobial use by the farmers of the Chikomba District, Zimbabwe Anderson Munengwa; Chikumba Nation; Mugoti Alban
Aceh Journal of Animal Science Vol 5, No 2 (2020): Desember 2020
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/ajas.5.2.16713

Abstract

Knowledge, attitudes, and practices (KAP) on antimicrobial use (AMU) of livestock farmers are poorly understood in Zimbabwe despite their essence in combating the development of antimicrobial resistance. The aim of the study was to assess these patterns based on suggested KAP variables. A questionnaire-based survey of (n=60) Small Scale Commercial Farmers (SSCF), (n=60) Large Scale Commercial farmers (LSCF), and (n=60) resettled farmers (A1) was undertaken from January to March 2019. Participants were purposively selected from 10 wards based on willingness to participate in the study. Logistic regression, analysis of variance, and Pearson's correlation were performed in SAS (2003) version 6. Overall AMU practice scores were above 50% despite detecting violation of manufacturer's specifications. AMU was correlated with farmer's knowledge, r (178) = 0.42, p =0.000 and attitude, r (178) = 0.54, p =0.000. Farming scale, type of livestock kept and level of education influenced AMU (P 0.05). Farming scale influenced above 50% of the farmers to change label dosages, withdrawal periods, treatment frequencies, and consult friends on AMU. A similar pattern was noted on the effect of main livestock species kept on changing treatment frequencies and the use of human antibiotics. AMU without prescriptions increased with a decreasing level of education (P = 0.010). Knowledge on AMU was high for LSCF (average 58%), low for A1 (average 33%), and SSCF (average 46%). Attitudes were positive for LSCF (average 67%) and SSCF (average 57%) and negative for A1 (average 49%). We concluded that there is a serious violation of antimicrobial manufacturer's specifications by farmers in the Chikomba district which is associated with poor knowledge and attitudes on prudent ways of AMU
Susceptibility profile of Zimbabwean livestock fecal Escherichia coli isolates to veterinary antibiotics: Implications for standardization of antimicrobial resistance surveillance in livestock production Anderson Munengwa; Chikumba Nation; Mugoti Alban; Dziwanyika Lenin
Aceh Journal of Animal Science Vol 7, No 2 (2022): June 2022
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/ajas.7.2.22766

Abstract

Susceptibility patterns of Escherichia coli to Veterinary Critically Important Antimicrobials (VCIAs) are poorly understood in most developing countries. We determined those patterns on n = 180 livestock fecal isolates from Chikomba district by disk diffusion method. Multiple Antibiotic Resistance (MAR) indices for the isolates were determined for risk analysis. Chi-square was used to test how antibiotic susceptibility level associated with animal species and farming scale. Resistance to Tetracycline and Ampicillin was high across animal species (above 70%). Moderate levels of resistance (30% to 54%) to Erythromycin, Trimethoprim and Chloramphenicol were detected across livestock species. Resistance levels were low (below 30 %) for Ciprofloxacin and Gentamicin. Resistance to Gentamicin, Tetracycline, Ciprofloxacin, Ampicillin, Chloramphenicol and Ceftazidime was associated with animal species (P ˂ 0.05). Antibiotic susceptibility patterns were independent of farming scale (P 0.05). Frequencies of isolates within each risk zone depended on animal species (P ˂ 0.05), contrary to farming systems (P 0.05). Multi-Drug Resistance was 73%, where most isolates were resistant to 5 antibiotics (23%) and none exhibited resistance to all antibiotics. Only 55% of isolates from cattle and over 80% from pigs and layers were within the high risk zone.  Twenty nine of the isolates were extended spectrum beta lactamase (ESBL) positive. Higher ESBL frequencies (44%) were observed within Large Scale Commercial Farms (LSCF) followed by for Small Scale Commercial Farms (SSCF) (25%) and Resettlement farms (A1) (14%). Similarly, ESBL prevalence varied by livestock species (P 0.05), as follows: pig (39%), layers (32%) and beef (12%). Our study suggests high incidences of multi-drug resistance in livestock which need AMR surveillance strategies. Keywords: Antibiotic resistance, Pigs, Poultry, Beef cattle, Escherichia coli