Occurrence of Antibiotic Residues in Milk from Manchega Ewe Dairy Farms

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°C, 10min) milk by the Delvotest SP test. The month of collection, somatic cell counts, and bacteriology...

Full description

Saved in:
Bibliographic Details
Published in:Journal of dairy science 2004-10, Vol.87 (10), p.3132-3137
Main Authors: Yamaki, M., Berruga, M.I., Althaus, R.L., Molina, M.P., Molina, A.
Format: Article
Language:English
Subjects:
4-Aminobenzoic Acid - analysis
Animal productions
Animals
Anti-Bacterial Agents - analysis
antibiotic residue
beta-lactam antibiotics
beta-Lactams - analysis
Biological and medical sciences
Cell Count
Dairy farms
Drug Residues - analysis
ewe milk
Female
Food industries
Fundamental and applied biological sciences. Psychology
Geobacillus stearothermophilus - growth & development
Hot Temperature
Logistic Models
Milk - chemistry
Milk - cytology
Milk - microbiology
Milk and cheese industries. Ice creams
milk quality
screening test
seasonal variation
Sheep
somatic cell count
Spain
Sulfonamides - analysis
Terrestrial animal productions
Vertebrates
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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°C, 10min) 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 β-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.
ISSN:0022-0302
1525-3198
DOI:10.3168/jds.S0022-0302(04)73448-7