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BARF Diet VS Prey Model Diet

April 20, 2019 4 min read

There is much controversy in the raw feeding community over what is truly appropriate for our canine companions to consume. The two most prominent diet models are the Prey Model Diet and the BARF Diet. While both provide excellent nutrition for our dogs, there are subtle differences that may be more suitable for one type of dog or another. Let’s wade in.

The Prey Model Diet

This diet operators on the principle that dogs are true carnivores and have no dietary requirements for plant matter. Prey model raw (PMR) feeders believe that domestic dogs should follow in their wolf ancestor’s footsteps eating what they ate for thousands, if not millions of years. This means consuming a diet that mimics wild dogs and wolfs.

A typical prey model diet is designed to mirror what a wolf would consume in the wild. If we dissect common prey animals, we will find the following is true on average:

  • 50% lean muscle meat (ground beef/chicken/turkey/etc)
  • 38% organ meat (this figure includes skin but is replaced with other more readily available organs)
  • 12% bone and supplements

The BARF Diet 

The BARF diet was pioneered by the well-known Australian Veterinarian and author, Ian Billinghurst. Today, the BARF diet is commonly referred to as the “Bones And Raw Food” diet or the “Biologically Appropriate Raw Food” Diet. Regardless of what you call it, it is generally accepted that this diet model is a mix of meat and plant matter. Acknowledging that dogs are sometimes opportunistic in their feeding behaviors and do not subsist of a diet entirely made up of meat.

The general blend is outlined here:

  • 58-68% lean muscle meat (think ground beef/chicken/turkey/etc)
  • 12% raw meaty bones
  • 10-15% organ meat
  • 10-15% fruits, veggies, and supplements

Plant Matter Debate

There is a high degree of controversy in the raw feeding community over whether plant matter (fruits/vegetables) are appropriate foods for dogs. While it is widely accepted that dogs are carnivores, research data has shown to be quite skewed when it comes to plant matter content in the diet of wild wolves.

Early studies and field research observed almost no consumption of plant matter. However, more recent studies of wild wolf populations in the Northwest Territory indicates that vegetation was found in roughly 14% of scat collected by researchers. With this level of occurrence, this would lead us to believe that these wolves were seeking out this vegetation. Not just coming across it through the prey that they consumed.

To further complicate the matter, it is a known fact that dogs do not digest plant matter all that well. Which makes the consumption of fruits and vegetables by wild wolves all the more curious. One theory is that these animals are seeking out nutrients that are deficient in the animals that they are eating. The other centers around the benefits of this plant matter and it’s fiber for the wolves gut microbiome (which we will get into more in our section about probiotics and prebiotics).

Differences in Feeding Guidelines

Prey Model Diet

When feeding a prey model diet, the energy content is much more condensed. As such, the general recommendation is to feed roughly 2% of body weight per day for adult dogs.

  • 10lb Dog:    3.2oz (1/5lb)
  • 25lb Dog:    8oz
  • 50lb Dog:    1lb
  • 75lb Dog:    1lb 8oz
  • 100lb Dog:  2lbs
  • 150lb Dog:  3lbs
  • 200lb Dog:  4lbs

BARF Diet

When feeding the BARF diet, the energy potential is a little lower than that of an all meat diet (prey model). As such, you will end up feeding a little more. The general recommendation is to feed roughly 2.5-3% of body weight per day for adult dogs. A BARF diet using 15% vegetation would be closer to the 2.5% calculation while a diet with 20-25% vegetation will be closer to 3%. We have outlined 2.5% below; as this is the structure that we follow:

  • 10lb Dog:    4oz (1/4lb)
  • 25lb Dog:    12oz (3/4lb)
  • 50lb Dog:    1lb 8oz
  • 75lb Dog:    2lbs 4oz
  • 100lb Dog:  3lbs
  • 150lb Dog:  4.5lbs
  • 200lb Dog:  6lbs

*Please note that regardless of diet model, if you have a very active dog or working dog, you may need to add 0.5-1% to the calculation outlined above. The key to finding the right percentage is actually in stool consistency. When you’re spot on, the dog is keeping it’s weight and stool is small and hard. When you’re feeding too much, stool will be soft/loose. You want a hard stool without causing the animal to strain while relieving itself.

The Bottom Line

Every dog is different. What might work for one may not work for another. Dogs with allergies or sensitivities will probably thrive on a prey model diet. However, they may drop weight like a stone towards their biologically appropriate set weight, which is pretty lean and might be disconcerting to some pet parents. 

On the other side of the coin, dogs on the BARF diet may put on a few unwanted pounds and may have a softer stool consistency than desired. It will all depend on their activity level and individual metabolisms. It doesn’t make one diet better than another. 

The best way to determine what works best for your dog will be trial and error. If they are happy, energetic, and look to be a healthy weight, then you’re probably on the right track. It does not need to be any more complicated than this.

 

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