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    Equine

    Nutrition experts share advice on how to help horses beat the heat

    Simon KingBy Simon KingJune 28, 2023No Comments4 Mins Read
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    With another sizzling summer on the cards, the nutrition advisors for the SPILLERS brand are sharing their guidance on keeping equine digestive systems healthy in hot weather, with appropriate hydration and forage intake.

    “The average 500kg horse on an all-hay diet may drink 40 litres of water per day and a horse exercising in hot weather, can lose as much as 10-15 litres of fluid per hour through sweating,” said Sarah Nelson, product manager at Mars Horsecare, home of the SPILLERS brand.

    “Dehydration can impair performance, poses several health risks and in severe cases it can be fatal. Hot, dry weather may also heighten the water soluble carbohydrate content in grass and increase the risk of laminitis, while sparse pastures may increase the risk of sand colic.”

    Ms Nelson offers 11 practical tips that SQPs can pass on to horse owners, so their horses beat the heat safely this summer.

    Keep water supplies fresh, clean and plentiful
    Fresh grass contains around 80% water. Under normal circumstances it may go a long way in meeting requirements but when soaring temperatures have scorched the grass, intake from buckets and troughs could more than double so make sure clean fresh water is always available.

    Check automatic troughs are working and keep an eye on herd dynamics – older or less dominant horses may be prevented from accessing water.

    Monitor fluid intake
    If you are concerned about fluid intake, try using manually filled buckets and troughs in hot weather so that you can monitor drinking easily.

    Tempt reluctant drinkers
    Horses may be reluctant to drink when they are away. They may prefer to drink familiar water from home so where possible try taking water with you to shows. It may also help to train your horse to drink flavoured water, perhaps by adding apple juice or molasses but if you are competing always consider the risk of prohibited substances before choosing a flavour. If offering flavoured water always offer plain water as an alternative.

    Count droppings to assess forage intake
    Although your field may look bare, if your horse or pony is overweight and you are picking up a similar number of droppings feeding additional forage may not be necessary.

    Yellow grass may not look particularly appetising but if there is enough available it will have a similar energy level to hay which is more than enough to sustain many horses. 

    Support hydration by using a soaked feed
    Using soaked feeds is a great way of getting extra fluid on board via the feed but an added benefit is that horses fed mashes may drink more too. Soaked feeds may be especially useful for those who are fussy drinkers.

    Don’t prepare soaked feeds in advance
    Soaking feeds in advance in hot weather can cause them to ferment quickly which is not desirable. Instead choose a fast-soaking mash – some take less than five minutes to prepare.

    Avoid soaking hay for more than three hours
    Soaking causes a rise in microbial contamination that may be exacerbated in hot weather. If soaking to reduce the ‘sugar’ content, we recommend 1-3 hours in warm weather and 6-12 hours in cold weather. If soaking to reduce ‘dust’ just 10 minutes may be sufficient.

    Beware scorched grass may be high in WSC
    Whilst drought and overgrazing inhibit growth, grass continues to produce sugar in sunny conditions. When it can’t be used for growth, this sugar is stored in the stem as fructan which means scorched grass may still be high in water soluble carbohydrates (WSC: includes simple sugars and fructan), presenting a hidden danger for laminitics. 

    Avoid sand colic
    The risk of colic from eating sand or soil is much higher if grass coverage is very sparse. Consider feeding hay or a low-calorie hay replacer, ideally in a net, feeder or bucket rather than from the ground.

    Provide a salt lick
    The recommend amount of compound feed or balancer, suitable forage and access to an equine salt lick will generally meet electrolyte requirements for maintenance. For those sweating on a regular basis, table salt (the salt you put on your chips!) is often an effective way of providing additional sodium and chloride.  

    Take care when the rain arrives!
    When the rain inevitably arrives, there will be a rapid increase in grass growth and consequently intake, increasing the risk of laminitis, weight gain and colic. Access to grazing may need to be restricted for good doers or removed completely for those at very high risk of laminitis.

    SPILLERS Perform & Restore Mash
    Feeding SPILLERS Perform & Restore Mash supports hydration and helps to replace some of the electrolytes lost through sweating. It is high in fibre and low in starch and sugar to support digestive health and reduce the risk of excitability.

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