This is the question we receive most often from our customers; unfortunately there is not a simple answer. As with people, some animals will be able to comfortably carry more weight than others and each animal needs to be evaluated individually. However, there are some guidelines to help determine how much weight is too much. The basic rule of thumb: 20% of the animal’s body weight, depending on all of the factors I’ve listed below.
Always take the following into account when determining how much to weight you can load, whether it’s your trail horse, your pack horse, your saddle mule or your pack mule:
I cannot stress enough that you have to know your animal. You should re-evaluate for every trip at least the animal’s condition as well as the temperature, distance, altitude and terrain of your ride and base your load weight on those factors. If your animal is not up to the task you are asking of him, you may be endangering not only his life, but yours as well. And remember: even though they share a pasture and get the same amount of exercise, each animal is truly different. For example, I once owned a tough, raw-boned pack mule named Henry. Henry only weighed about 1100 pounds, but he could pack a 250 pound load for 15 miles in hot weather and dance the whole way. However, Daisy is pushing 35 and would be retired if she didn’t pitch such a fit when she gets left behind. Daisy’s loads typically weigh in at maybe 12-15% of her body weight. We all walk a little slower to accommodate her and I keep her in mind when deciding how far we’ll go each day.
Conformation is often a factor in how well your loads ride. For example, the load on a low-withered animal will need to be packed carefully and evenly. Even a minor difference in weight or weight distribution from one side to the other can cause the saddle to constantly shift. At best, this is an inconvenience, as you will have to constantly stop and adjust your packs. At worst, the saddle could slip to the side completely and cause a wreck. As another example, a short-backed horse may not be able to carry heavily weighted large saddlebags as they may sit uncomfortably on the horse’s kidneys.
Additionally, it is important to remember that live weight (the rider) rides differently than dead weight (a pack load of any kind) and the 20% rule doesn’t necessarily apply to live weight. A rider can shift in the saddle to help compensate for rough terrain or can even get off and walk. A good rider is also easier for a horse to carry than an inexperienced one. An experienced rider in a well-fitting saddle on a well-conditioned horse might be fine on a long, tough ride, even if the combined weight of saddle and rider is more than 20% of the animal’s body weight.
Dead weight, on the other hand, cannot adjust to terrain changes and, therefore, must be carefully packed to stay in place regardless of conditions. Remember, gravity works. Once a pack begins to slide off to one side, it gravity will keep it going. This can upset your animal, cause soring or, even worse, a disastrous wreck.
Unfortunately, there are no hard and fast rules on how to pack a load. It depends upon what you are packing, your equipment, your animal and your experience level. However, there is one rule to always bear in mind…equal size, equal weight and equal weight distribution. If you follow this rule, you should generally have less trouble packing a load.
Riding saddles and pack saddles need to fit well. A poor fitting saddle will not properly distribute weight across the horse’s back. If the fit is poor, it can cause sore muscles or even open wounds. Before loading any weight on your animal, be sure to double check the fit and condition of your saddle. If you run your hands between the saddle bars and the animal, you should not feel any significant gaps in contact - our rule of thumb is 85% even contact between the bars and the horse.
There is never a simple black & white answer to “How much weight can my horse carry?” The answer always has to be determined on an individual basis considering the factors mentioned above. As I said, most of these items are simply common sense, but so many of the horror stories that I have been told over the years could have easily been prevented if the people involved had just honestly and critically judged their animal’s strengths and weaknesses.
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