Potassium

McDowell, L. R.

doi:10.1016/b978-0-444-51367-0.50007-6

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…However, at death the mean plasma magnesium concentrations of both these groups of ewes were within accepted normal ranges (>0·73 mmol/litre, Todd 1969). As non‐lactating sheep are less susceptible to hypomagnesaemic tetany than lactating sheep, they were given almost twice as much potassium chloride and citric acid, raising the estimated dietary potassium concentration to approximately 47 g/kg dm, similar to the levels found in highly fertilised grass (McDowell 1992).…”

Section: Discussionmentioning

confidence: 99%

Postmortem biochemical markers of experimentally induced hypomagnesaemic tetany in sheep

McCoy¹,

Bingham²,

Hudson³

et al. 2001

Veterinary Record

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Hypomagnesaemic tetany was induced in non-lactating and lactating ewes by feeding them semi-synthetic low magnesium diets containing additional potassium chloride and citric acid. Aqueous and vitreous humour were sampled from one eye at the time of death (fresh) and from the second eye after the head had been stored at ambient temperature for 24 hours (24.hour). There were significant relationships between the concentrations of magnesium in cerebrospinal fluid and plasma and its concentrations in fresh aqueous humour and fresh vitreous humour. Magnesium concentrations of <0.33 mmol/litre in fresh aqueous humour and <0.50 mmol/litre in 24.hour aqueous humour were associated with severe hypomagnesaemia and tetany. However, the concentration of magnesium in aqueous humour is relatively unstable and, unless the time of death was known accurately, its interpretation would be difficult. Magnesium concentrations of <0.60 mmol/litre in fresh vitreous humour and <0.65 mmol/litre in 24-hour vitreous humour were associated with severe hypomagnesaemia and tetany in adult sheep. The concentration of magnesium in vitreous humour was relatively stable for up to 48 hours postmortem.

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Section: Discussionmentioning

confidence: 99%