A syndrome of facial paralysis of dairy calves in the Franklin district of New Zealand

McFadden, Andrew; Mackereth, Graham; Avery, M. I.; Clough, R R; Bolotovski, I; Fitzmaurice, J.; Julian, A. F.

doi:10.1080/00480169.2009.36871

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Cited by 4 publications

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“…McFadden 4 described a syndrome of facial paralysis affecting dairy calves in New Zealand in 2 consecutive years. Calves in the affected herd had been housed for the first 2 to 3 weeks of life in a shed with a floor consisting of a layer of steelworks slag covered with wood shavings.…”

Section: Discussionmentioning

confidence: 99%

Facial paralysis with ear droop in calves associated with exposure to steelworks slag, possibly due to vanadium toxicity

Jewell

Floyd²,

Davies

et al. 2022

Vet Record Case Reports

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A group of 5 to 7‐week‐old calves presented with unusual clinical signs that included facial paralysis and ear droop. Postmortem examination of a single calf ruled out infectious causes and confirmed that the calf had ingested a gritty slag, a by‐product from the steel industry. The slag was being used on a farm on grazing land but had been stored in such a way that the calves had been exposed. Analysis of the ingested material and tissue analysis confirmed the presence of vanadium at concentrations likely to be significant. A literature search confirmed two other similar cases in Sweden and New Zealand where steel slag exposure had been associated with similar clinical signs; in the former case, these had been attributed to acute vanadium toxicity.

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Section: Discussionmentioning

confidence: 99%