BACKGROUND Milk produced by cows in receipt of antimicrobial therapy may contain antimicrobial residues. Such antimicrobial-containing waste milk must be withdrawn from human consumption and is therefore sometimes used as calf feed. Unfortunately, this approach might promote selection of antimicrobial resistant bacteria in the calves' intestinal microbiota. The objectives of this study were the...

The aim of this study was to investigate the distribution cefquinome in different dairy products during processing naturally contaminated milk or spiked milk. analysis residues milk, skimmed buttermilk, whey, cream, butter, curd, and cheese samples performed using a water:acetonitrile solvent extraction C18 dispersive solid-phase (d-SPE) clean-up, followed by ultrahigh-performance liquid chroma...

Although intensive research and prevention measures have been carried out for decades to control bovine mastitis, it continues to cause the biggest economic impact to the dairy industry worldwide. Severe economic losses, which are estimated to be approximately $200/cow/yr in the United States, are due to reduced milk production, discarded milk, replacement costs, extra labor, treatment, and vet...

When udders were washed before milking, a post milking teat-dipping with a 5,000 mg available iodine/l iodophor induced an iodine residue of 33 to 54 micrograms l/kg in milk. The iodine contents of the first jets of milk were 1.08 to 8.27 times higher than those of average milk. However, the bulk of iodine residues in milk seemed to be an iodine transfer across teat skin to milk. From these dat...

The influence of new chlorine‐free milking equipment cleaning protocols was compared with that traditional chlorine‐based from the perspective microbiological quality and chlorine‐related residues in bovine bulk tank milk. Commercial dairy farms using different were identified, milk these sampled tested on three occasions during production season for microbial load trichloromethane chlorate. To...

Raw buffalo milk samples from the agroindustrial zone in upper Egypt were analyzed for the presence of organochlorine and organophosphorus pesticides using gas chromatography-mass spectroscopy. Five organochlorine pesticides namely, alachlor, dieldrin, hexachlorobenzene, lindane and methoxychlor and three organophosphorus pesticides chlorpyrifos, malathion, and parathion-methyl were detected in...

OBJECTIVE To determine whether prepartum intramammary treatment of dairy heifers with pirlimycin hydrochloride would reduce the prevalence of intramammary infection (IMI) and lower the somatic cell count (SCC) during early lactation or improve 305-day mature equivalent milk production. DESIGN Prospective clinical trial. ANIMALS 183 Holstein-Friesian heifers (663 quarters) from 2 dairy farms...

Comparative study of the oligosaccharide profiles of individual human milk revealed the presence of three different patterns. Four oligosaccharides containing the Fucalpha1-2Gal group were missing in the milk of non-secretor, and three oligosaccharides containing the Fucalpha1-4GlcNAc group were missing in the milk of Lewis negative individuals. Disappearance of some major oligosaccharides in t...

Antimicrobial resistance represents a major global threat to modern medicine. In vitro studies have shown that very low concentrations of drugs, as frequently identified in the environment, and in foods and water for human and animal consumption, can select for resistant bacteria. However, limited information is currently available on the in vivo impact of ingested drug residues. The objective ...

Analysis of milk samples indicated their contamination by some heavy metals residues, exhibiting a wide array of hazardous impacts on human health. It can be observed that levels of mercury in milk is higher, followed by levels of lead, Arsenic, and cadmium. The statistical analysis of obtained data revealed that all examined milk samples having Pb, Cd, As and Hg levels above the recommended pe...