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Evaluation of screening test for detection of antimicrobial residues in ewe milk
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ABSTRACT
The effects of preservatives (potassium dichromate and sodium azide), heat treatment (untreated and 82[degrees]C/10 min), and lactation stage upon the response of the microbial tests (BRT AiM and Delvotest) utilized for the detection of residues of antimicrobial substances in ewe milk were examined. Milk samples were collected from the morning milking of 50 Manchega ewes every 2 wk, from 15 d postpartum until the end of lactation. A total of 2322 samples were analyzed by BRT A...
Related newspaper, magazine, and journal articles from HighBeam Research
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Fossomatic cell-counting on ewe milk: Comparison with direct microscopy and study of variation factors
Journal of Dairy Science
; ABSTRACT Using the Fossomatic method (FSCC) a total of 23,003 analytical SCC observations were carried out on 6400 aliquots taken from 80 individual ewe milk samples with the objective of studying the influence of 4 preservation procedures (without preservation, potassium dichromate, azidiol, and
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Detection limits of antimicrobials in ewe milk by delvotest photomeric measurements
Journal of Dairy Science
; ABSTRACT The Delvotest method detection limits per manufacturer's instructions at a fixed reading time of 3 h for 24 antimicrobial agents were determined in ewe milk by photometric measurement. For each drug, eight concentrations were tested on 20 ewe milk samples from individual ewes. Detection
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Occurrence of Antibiotic Residues in Milk from Manchega Ewe Dairy Farms
Journal of Dairy Science
; 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 (82C, 10 min) milk by the Delvotest SP test. The month of collection, somatic cell counts, and
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Effect of freezing on fossomatic cell counting in ewe milk
Journal of Dairy Science
; ABSTRACT Using the Fossomatic method, a total of 10,072 analytical somatic cell count (SCC) observations were carried out on 4760 aliquots taken from 70 individual ewe milk samples with the objective of studying whether freezing showed significant differences of SCC in comparison with
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Effects of Somatic Cell Count and Stage of Lactation on the Plasmin Activity and Cheese-Making Properties of Ewe Milk
Journal of Dairy Science
; ABSTRACT The experiment was conducted from March to July 2002 using 5 intensively managed flocks of Southern Italy. In each flock, 2 groups of 50 ewes were created. The groups were designated LSCC (low somatic cell count [SCC]) when their milk SCC was lower than 500,000/mL and HSCC (high SCC) when
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