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Citaat:

Garlic can be used used to give relief from the symptons of coughs - it contains a substance that helps to clear mucus in the airways. This cleansing action, together with its ability to reduce inflammation, also benefits the urinary tract.

The recommended amount to feed is half an ounce to 2 ounces per day depending on the horse or pony's size. It comes in several forms for equine use - powder, freeze dried granules and some herbalists claim freshly grown garlic is the best way to feed it.

However feed with care as it is being discovered that there are dangers in feeding too much garlic as it can can cause anemia in horses.

There is a toxic element in Garlic called N-propyl disulfide which can change an enzyme within a horse's red blood cells, it depletes the cell of a chemical known as phosphate dehydrogenase - whose task is to protect the blood cells from damage caused by oxidation

When the level of phosphate dehydrogenase gets too low the hemoglobin in the blood cell oxidizes and forms a bubble. This is seen as being deformed as it passes through the spleen and is removed from the bloodstream. If the blood is consistently poisoned by N-propyl disulfide contained in a garlic supplement more red blood cells are removed and the horse may slowly become anaemic.

Researchers fed a healthy horse 1 lb of onion tops, which also contain N-propyl disulfide, over an 11 day period. By the 11th day the horse had lost almost 60% of his red blood cells and was severely anaemic!

Some vets claim that the toxic effects of garlic are gradual - a low dose fed on a regular basis can result in mild anemia.

However it may be that commercially prepared equine garlic supplements are not dangerous as the active ingredient -allicin - is often destroyed during the manufacturing process when heat dried.

The benefits of garlic are many and if you do decide to feed a garlic supplement just be careful not to overdo it.

Citaat:

"Graduate student Wendy Pearson decided to study garlic for horses after reading a study by a U.S. researcher who claimed the feed supplement could be toxic in relatively low doses and cause anemia.
Photo by Olivia Brown

Wendy Pearson figures she wasn't too popular at the Arkell Equine Research Station for a few months. That's because the U of G graduate student, who recently defended her master's thesis, did a three-month study at Arkell on the use of garlic as a feed supplement for horses.

"The whole barn smelled," says Pearson, who spent hours peeling about 600 pounds of garlic at home, in the lab and at the barn for the trial.

Pearson, who earned a B.Sc.(Agr.) in the Department of Animal and Poultry Science before going on to do her M.Sc., decided to study garlic for horses after reading a study by an American researcher who claimed the feed supplement could be toxic in relatively low doses and could cause anemia. She began her master's degree in spring 2002 with Prof. Mike Lindinger, Human Biology and Nutritional Sciences. Lindinger is a comparative animal physiologist who studies fluid and electrolyte regulation in horses and humans.

Safety concerns aside, Pearson says most people would be surprised to learn that garlic is on the menu for horses at all. But she says it's common practice among horse owners and trainers for treating or preventing respiratory problems and for lowering cholesterol -- even in some cases for repelling mosquitoes.

She saw garlic used regularly while working for trainers at racetracks during the 1990s in Toronto and New Zealand. The herb is usually fed to horses as heat-dehydrated granules or powder supplemented to the feed, and at one farm, she saw horses receive freshly pressed cloves. She adds that the Equine Research Centre (now Equine Guelph), where she used to work as a researcher, received frequent calls about garlic's use as a feed supplement.

During the Arkell trial, Pearson studied four horses. Two received the garlic as a top dressing in their feed; the others were fed a garlic-free diet. Increasing the daily amounts of freeze-dried garlic to a maximum of five cups per day over at 71-day period. She found that the garlic eaters showed changes in their blood chemistry beginning at around the third week, when garlic intake was four cups of freeze-dried garlic per day. Their red blood cell count fell and the red cells developed Heinz bodies, deformations in the cells caused by denatured hemoglobin. "They become clinically anemic at the highest dose," says Lindinger. That finding warranted termination of the study.

After reaching the maximum amount the horses would voluntarily eat, the garlic was completely withdrawn. Blood chemistry become normal within about five weeks, Pearson says.

Although she found that large amounts of voluntarily eaten garlic negatively affected horses, she says owners and trainers are currently supplementing horse feeds with less than one-tenth of the maximum amount of garlic administered to the research horses. There is minimal risk of toxicity at these amounts, she says, and contrary to an earlier claim that just five grams of garlic a day could be toxic, she estimates a horse would have to eat more than 100 times that amount before experiencing ill effects.

Beyond safety, says Pearson, the health benefits of garlic are still open to question. Her study was not designed to determine if such benefits exist, although she did note an increase in cholesterol in the control horses but not in the garlic eaters.

"This gives some indication of an ability to regulate blood cholesterol, perhaps by affecting cholesterol biosynthesis in the liver."

Lindinger says the next phases of the garlic research will determine the maximum safe daily amount horses will voluntarily ingest over the long term without causing negative effects and whether the lower amounts typically used for therapeutic benefits are, in fact, associated with such benefits.

Humans have been using garlic for centuries for a variety of supposed health benefits, including reduced blood pressure and LDL (so-called "bad") cholesterol, regulation of blood sugar and cancer prevention.

This winter, Pearson began her PhD in biomedical sciences and plans to develop a tissue culture screening model for anti-inflammatory herbals in equine joint disease.

On the other hand, to my knowledge and experience, garlic can be very beneficial.
I suggest that you give your horse 4 to 6 times a year one week of garlic if needed."

Uriah schreef:

ik kom even om de hoek kijken, mijn merrie heeft ZE en schuurde vorige week heel licht, ik zie de bekende mugjes alweer overal zwermen, is het nodig om met dit weer type een deke om te doen? ik heb haar nu wel in de deken staan sinds vandaag maar het voelt en lijkt zo raar als ik naar het weer kijk en om me heen paarden met winterdekens zie staan. vorig jaar bij de epplejack zeiden ze dat als je paard al schuurt en dan nog een deken op doet het eigenlijk al te laat is. bij mij was dat toen ook zo ,dat was eind april ongeveer en ze heeft toen haar rsih helemaal aan flarden geschuurt.