Entries by Dr Nerida Richards

Grazing Muzzles

I personally love grazing muzzles. A muzzle means my horses can be out grazing 23+ hours per day. Without them they would be strip grazed (trashing my natives pastures in the process) or locked up for extended periods, which for gut and mental health is not ideal either. But they come with their challenges. They […]

Too Much Salt Might Be Killing Gut Bacteria

The last two weeks has seen extreme weather conditions for us in my local area in Australia. In the last 14 days, 7 days have been 40 degrees celsius or higher (104 F +) and of the other 7 days only one was below 37 degrees C (99 F). To make things worse, the nights […]

Iron for Horses: Could Forage Be Enough?

Comparison of equine dietary iron requirements to iron concentrations of 5,837 hay samples N. Richards and B.D. Nielsen, 2018 Introduction Iron is essential for the production of red blood cells. According to the 2007 Horse NRC, Fe requirements are 50 ppm for growing foals, lactating and pregnant mares, and 40 ppm for all other classes […]

Sunbleaching or Sweat?

I think it must be a combination of both! Poet and I did an unintentional experiment over our Christmas break that seems to show that the sunbleaching that occurs in some horses over summer is a combination of sun and sweat. Where we live flies can get bad, so my horses have flymasks on during […]

Setaria Grass and Bighead: What You Need to Know

Setaria should really be classified as toxic for horses. It is a subtropical pasture with such high levels of oxalate that it makes it almost impossible to prevent Secondary Nutritional Hyperparathyroidism (Bighead disease) in horses grazing this grass. Grasses like kikuyu and buffel grass readily cause bighead disease with an oxalate content of around 15 […]

Teff Hay vs Rhodes Grass Hay

Teff Hay seems to have suddenly appeared as a hay option for many horse owners and because it is sold as a low starch low sugar hay it is starting to be recommended in place of Rhodes Grass Hay. BUT, if you are lucky enough to have access to Rhodes Grass Hay, I wouldn’t be […]

Copper & Coat Color

We often talk about copper deficiency in horses, and specifically its role in coat color. Copper is part of an enzyme called tyrosinase which is essential for the production of melanin. Melanin is what gives the skin, hair and eyes their color. So it makes sense that copper deficiency would cause a change in coat […]

Drought Feeding: Keeping Your Horse Healthy

While many of us in Australia have received some long overdue and welcome rain hay supplies are still short. Increasingly we are having to turn to sources of hay outside of the commonly used lucerne, grassy/meadow, rhodes, clover, oaten and wheaten hays. Not all alternative hay types are suitable for horses however so be careful […]

How to Feed a Horse That Won’t Sweat

Anhydrosis, or the inability to sweat, is a serious condition that affects horses in hot and humid climates. Horses rely heavily on sweating to cool themselves down and keep their core body temperature within a normal range. Sweat wets the horse’s skin and then as it evaporates it takes heat with it, effectively creating an […]

What to Do When Your Horse Won’t Eat

There is nothing more frustrating or worrying than a horse that won’t eat. Horses go off their feed for a variety of reasons which can include illness, unpalatable feeds or gastrointestinal disturbances such as hindgut acidosis. Thankfully though, there are some things you can do to get a horse eating again. Here are some useful tips for maintaining appetite.