Cattle store very little magnesium in their body and rely on Magnesium being supplied daily in their feed. If pasture levels are low this can trigger a deficiency.
- Sudden deaths.
- Early signs…facial & ear twitching.
- Become agitated with sounds or movement eg Handling, birds flying overhead.
- Staggering as it becomes worse.
- Lying on side with convulsions, muscle spasms, thrashing.
A veterinarian will inject animals but if symptoms are recurring farmers may need to do so themselves, as cattle die quickly once on the ground.
- Pasture flush after good rains/Spring pastures.
- Any reduction in feed intake e.g. handling, yarding, bad weather.
- Pastures fertilized with high nitrogen or potash.
- Lush winter pastures e.g. rye & oats.
- Cows in early lactation.
- Riverina dairy feeds contain extra Magnesium in the winter months which works on most farms.
- If an outbreak occurs additional magnesium can be added to your dairy or beef feed.
- Contact your sales representative or nutritionist for advice on levels.