Maintaining healthy herds is a priority in commercial dairies. Prevention, early diagnosis, and effective treatment of health disorders is required to improve cow performance and enhance longevity of the animals.

Most of the metabolic problems of the dairy cow happen during the first two weeks of the lactation. It has been reported that nearly 25 percent of the cows that leave the herds do so during the first 60 days in milk.

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mycotoxin

Fusarium mycotoxin intoxication in lactating cows

Fungal species of Fusarium produce the mycotoxins deoxynivalenol, fumonisins, and zearalenone. The limits established for dairy cattle by the Food and Drug Administration (FDA) in the US for deoxynivalenol and fumonisin are 5 ppm and 30 ppm, respectively. Although the FDA does not suggest safety guidelines for zearalenone, the European Commission established 250 ppb as the maximum legal limit in complete feed for this mycotoxin.

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Reducing aflatoxin excretion in milk

Reducing aflatoxin excretion in milk

Aflatoxins are metabolites produced by mold fungi such as Aspergillus flavus and A. parasiticus under certain conditions. The most abundant aflatoxin, aflatoxin B1, is a potent carcinogen and it is considered the most toxic naturally occurring toxin. After ingestion, aflatoxin B1 is bio-transformed into the secondary metabolite aflatoxin M1 and excreted in milk, urine and feces.

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Estimating withdrawal period after topical application of oxytetracycline for digital dermatitis treatment

Estimating withdrawal period after topical application of oxytetracycline for digital dermatitis treatment

Digital dermatitis (DD) is a polybacterial disease that affects the skin on the heels of cattle. Round lesions occur along the coronary band of the claws, above the interdigital space next to the heel bulbs. It was first described in Italy in 1974 by Cheli and Morterallo, and it has become a growing problem worldwide for the dairy industry.

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