Survey on the presence of antibiotic residues in raw milk samples from six sites of the dairy pool of Niamey, Niger

Abstract

Background and Aim: Antibiotics are widely used in animal production for treating the diseases and for preventing or increasing animal growth. The presence of antibiotic residues in milk is a public health problem. The aim of this study was to assess the use of antibiotic residues in raw milk from the dairy pool of Niamey in three farms (Toukounous, Kirkissoye, and Niamey) and three collection centers (Hamdallaye, Kollo, and Say). Materials and Methods: A direct interview (questionnaire) was used to collect data regarding the mode of use of antibiotics, the level of knowledge of farmers according to the withdrawal period, and a cross-sectional study was conducted on 192 samples of raw milk. The Delvotest® T was used to monitor antibiotic residues in milk. The data were analyzed using SAS and R software. Results: The most commonly used antibiotics were those from the family of tetracycline (86.7%) and from the family of beta-lactams (13.3%). Regarding the statements of farmers, the reasons why the farmers use antibiotics were the following: About 47% in case of prevention and treatment, 29% for treatment, 12% for prevention, and 12% for increase dairy production. Moreover, the farmers lacked the necessary information about withdrawal period. Screening of antibiotic residues was performed using a standardized biological test kit, the Delvotest®. In total, from 192 samples of raw milk, 19 (9.9%) were positive including ten from collection centers and nine from farms. This could lead to a risk of exposure when a consumer drinks locally produced raw milk. Conclusion: Raw milk supplied from the area of the study has a level of antibiotic residues, and the breeders have a low level of knowledge about the withdrawal period.

Processing and preservation methods of Wagashi Gassirè, a traditional cheese produced in Benin

“…These two behaviours were reported by the majority of the dairy farmers surveyed. In Benin and in West Africa, several studies showed that milk usually contains antibiotic residues, particularly tetracyclines, beta-lactams, aminoglycosides, penicillin, sulphonamides, and macrolides ( Madougou et al., 2019 ; Mensah et al. 2014b , 2019 ; Oluwafemi et al., 2018 ; Olatoye et al., 2016 ; Bagré et al., 2015 ; Addo et al., 2011 ).…”

βeta-lactam and Tetracycline Antibiotic Residues in Cow Milk in the Constantine region, Algeria

“…In addition to human health effects, the technological impact in the dairy sector must also be considered, since antimicrobial drugs can interfere with the production of dairy products, decreasing acid formation, reducing milk curdling and cause improper ripening of cheeses (Chiesa et al, 2020), resulting in financial losses in the dairy industry (Pogurschi et al, 2015). Antibiotic residues in animal products are also a factor of environmental and water pollution (Madougou et al, 2019). These reasons make milk containing antibiotic residues a harmful food whose sale is prohibited under Algerian law.…”

ELISA and Copan Based Evaluation and Analysis of Antibiotic Residues in Cattle Milk in Qazvin, Iran

“…Sampling of milk: Samples were collected from six districts of industrial livestock centers in Qazvin province, Iran in 2019 during summer and winter seasons. The sampling method used was Random cluster, and the sample size was calculated by Equation 1 [15,16] .…”