Occurrence of antibiotic residues in milk from Manchega ewe dairy farms

Journal of Dairy Science
M YamakiA Molina

Abstract

Ewe milk samples from different ovine dairy farms from the Castilla-La Mancha region of Spain were collected from bulk tanks to estimate the occurrence of antibiotic residues in raw and heated (82 degrees C, 10 min) milk by the Delvotest SP test. The month of collection, somatic cell counts, and bacteriology were analyzed and examined by means of a logistic regression model. The screening of a total of 2686 raw milk samples showed 1.7% "positive" and 2.1% "doubtful" results, which decreased after heating treatment to 1.3% and 0.4%, respectively. "Positive" and "doubtful" samples were identified by penicillinase and p-aminobenzoic acid solutions, and the majority of them corresponded to antimicrobials different than beta-lactams or sulfonamides. By applying a logistic regression model, a significant effect of month of collection and bacteriology was observed in the initial screening and after the heat treatment. The highest percentages of "positive plus doubtful" results were observed in late summer-early autumn. A slight peak was also observed in spring in raw milk samples. Bacteriology was positively correlated with "positive plus doubtful" results.

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Citations

Nov 3, 2010·Foodborne Pathogens and Disease·Javier RúaMaría Rosario García-Armesto
Apr 8, 2016·Critical Reviews in Food Science and Nutrition·Lei TianStéphane Bayen
Jun 15, 2016·Journal of Food Protection·Rahmat AttaieAdela Mora-Gutierrez
Nov 21, 2007·Journal of Dairy Science·B LinageF San Primitivo
Apr 11, 2012·Analytical and Bioanalytical Chemistry·Ruth BabingtonRoger Galve
Jul 16, 2013·Tropical Animal Health and Production·Michel RakotoharinomeVincent Porphyre
Oct 11, 2019·PloS One·Mahantesh KurjogiSudisha Jogaiah
Oct 31, 2017·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Bal Kumari Sharma KhanalAnil Kumar Anal
Mar 31, 2009·International Journal of Food Sciences and Nutrition·Nurhan Unusan

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