There are some that think it's okay, and it's just another one of those things. If you are comfortable, go for it.
That said, liver compromised dogs tend to have compromised immune systems. So it is more of a risk to give the bacteria. Doesn't mean your pups do, but it's a concern. The type of protein is important and the premade raw diets are opposite of what is usually recommended although most with MVD do just fine on whatever meat is given.
But it is not 13%. That has to be converted to dry matter basis (remove the water content to compare to kibble). When that is done, it is more like 42% protein.