Abstract
The emergence of antibiotic resistance among humans has prompted concerns about the public health implications of antibiotic use in agriculture. One hundred (100) Poultry feed samples were collected, serially diluted and cultured using pour plate method. Identification of the isolates was based on the morphological and biochemical characteristics using Bergeys Manual of Determinative Bacteriology. The antibiotics susceptibility testing was carried out using the disk diffusion method. The microbial load of each samples ranged between 2.2 × 105 to 6.5 × 106. The overall percentage occurrence of the isolates revealed Staphylococcus spp. 25 (62.5%) and Salmonella spp. 15 (37.55%). Antibiotic sensitivity patterns of the bacterial isolates were tested against six commonly used antibiotics viz., gentamycin (GEN), vancomycin (VAN), oxacillin (Ox), penicillin (P), chloramphenicol (C) streptomycin (S). There was a slight susceptibility to gentamycin and vancomycin by Salmonella sp and S. aureus and moderately resistant to chloramphenicol and streptomycin but 100% resistant to penicillin and oxacillin used. Improper antibacterial treatment and overuse of antibiotics for agricultural purposes which contributed to increase incidence of multiple antibiotic resistances in farm animals must be discouraged.
Highlights
Introduction contaminated with food borne pathogenic microbes during harvesting, processing, handling, and marketing of the bagged feeds [2]
The percentage Susceptibility of S aureus and Salmonella sp recovered from poultry feed, the Intermediate and Resistant to various antibiotics used are shown on Figure 1 respectively
The microbial load of feed sample PF25 was higher than what is recorded for other feed samples in some locations which corroborated the work of Uwaezuoke and Ogbulie, (2008) who reported the contamination of poultry feeds with Staphylococcus aureus and Salmonella sp which likely might have resulted from the manufacturer or the ingredients used in compounding the feed since good manufacturing practice often enhances good products
Summary
Introduction contaminated with food borne pathogenic microbes during harvesting, processing, handling, and marketing of the bagged feeds [2]. Sources of Salmonella infections into poultry farms include contaminated feed and feed ingredients, water, equipments, personnel, rodents and hatchery related unhygienic activities [13]. The study is designed with the aim of determining the bacterial load and the antibiotics susceptibility of the isolates obtained from the poultry feeds sold in Ile- Ife, Southwestern Nigeria.
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