How do you treat grass staggers in cattle?
It is recommended that dry cows receive a diet containing 0.35 percent Mg, and lactating cows 0.28 percent Mg. There are a number of different sources of magnesium, and methods of adding these into a cow’s diet. Common methods include drenching, pasture dusting, hay slurries, through water, and as magnesium bolus.
What causes staggering in cattle?
Also known as hypomagnesaemia or grass tetany, staggers is caused by a low level of magnesium (below 0.65mmol/L) in the blood. It usually occurs around calving and presents as a down cow. Cattle cannot control magnesium levels in the blood well, so the condition can develop very quickly.
What does grass staggers look like?
Ryegrass staggers symptoms are most likely seen in stock which graze seed heads or graze into the base of the pasture where the endophyte chemical is concentrated. Symptoms start with tremors in the neck and head, followed by heavy tremors and stiff legs. Seriously affected animals often fall over when disturbed.
What causes Hypomagnesaemia in cattle?
Cause. Hypomagnesaemia occurs when the intake of magnesium is exceeded by its output. The clinical signs can occur very quickly because the cow does not store magnesium, and is thus reliant on its daily dietary intake.
What are the symptoms of grass tetany in cattle?
Animals with grass tetany may experience excitable and erratic behavior. They can appear to be blind. Clinical signs can include hypersensitivity to touch, muscle tremors, frequent urination, staggered walking pattern, separation from the herd, convulsions, coma and, ultimately, death.
Why is magnesium good for cows?
Magnesium is a key mineral for cows and plays a crucial role in mobilising calcium from bones and increasing gut absorption. In pre-calving cattle, in particular, access to this calcium is pivotal in ensuring a smooth birthing process. In the UK, magnesium oxide is one of the most commonly fed sources of magnesium.
How do you prevent cattle staggering?
Prevention/control measures The best method is to use 60g magnesium oxide (calcined magnesite) per cow per day in high-magnesium cobs. Magnesium salts are relatively inexpensive and the cost of supplementation 100 cows for two months will be less than the loss on one animal due to hypomagnesaemia.
How do I stop grass staggering?
Top tips on how to avoid grass staggers
- Offer supplementary salt.
- Minimise use of nitrogen and potassium fertilisers.
- Choose your fields carefully for grazing.
- Provide daily access to a palatable magnesium source.
- Feed long fibre sources.
- Maintain dry matter intakes.
What is milk tetany?
What is Tetany? Grass tetany is a complex disorder characterized by hypomagnesemia (low blood Mg). A high K intake can decrease the absorption of Mg from the gut inducing hypomagnesemia. Grass tetany may also be referred to as lactation tetany, winter tetany and milk tetany in calves.
How do you treat grass tetany in cattle?
Grass tetany can be treated with an intravenous dextrose-based commercial preparation of magnesium and calcium purchased from a local veterinarian. Remember, cattle are more susceptible to grass tetany in the spring, with weather events increasing risk.
How do you control grass tetany in cattle?
Treatment of affected cattle
- magnesium oxide powder for dusting onto feed or pasture.
- magnesium lick blocks.
- slow-release capsules.
- magnesium sulphate or soluble magnesium chloride added to hay or silage.
- adding magnesium to concentrates or pellets.
How do you fix grass tetany in cattle?
The normal treatment is intravenous injection of a commercial preparation of magnesium and calcium in a dextrose base. Consult your veterinarian, and have medication on hand before turning cattle out to graze. Grass tetany is a result of a magnesium defi- ciency.
What causes cows to stagger at fresh grass?
Staggers is mostly seen in lactating cows at grass (particularly fresh grass in the spring). It occurs when magnesium lost through milk cannot be replaced by sufficient dietary intake, or through interactions between magnesium and other minerals.
What kind of animals are affected by ryegrass staggers?
Ryegrass staggers is a nervous disease affecting sheep, cattle, horses & deer after they have grazed endophyte-affected ryegrass dominant pastures under close grazing conditions.
What’s the difference between rye grass and staggers?
Ryegrass staggers should not be confused with “grass staggers”- a nervous disease caused by a deficiency of magnesium. Endophyte is a fungus found in the leaf, leaf sheath, stem and seed of perennial ryegrass.
Why does grass stagger increase in the spring?
The increase in disease in spring occurs because rapidly growing grasses, particularly ryegrasses, are very low in magnesium.