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I am wondering about what blade to use when grinding bone? I am now using the3/16" plate but every time I clean the machine I found some bones stuck on the plate that won't be grind (mostly are the soft bone of joints). Will this lead to calcium-to-phosphorus ratios unbalanced? Do I need to add more calcium (I am thinking eggshells) to make up the bones stuck on the plate? Or do I need to change to a bigger plate (I am a little concerned about if bones are not grind small enough that my cats would get choked)? Please advise.

Ps. I am following Cat Nutrition.Org recipe with bone.
 

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I think most of the raw-feeders here (including me) offer either whole prey or frankenprey and can't, therefore, easily answer your question.

Unless there's a ton of bone stuck to the plate, though, I don't think I'd worry about it. I use my cat's stools as a guide - if your kitties stools are soft, then you probably do need to add more bone to their food, if not, however, again, I wouldn't worry about it.

Regards!

AC
 

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Just to let you know, that the recommended Ca: ph ratio, gathered from many sources and opinions, can be anywhere from 1.1:1 to 2:1. If you look at some of the info we have for possible prey, there really is no average ratio. The USDA shows the min ratio should be about 1.2:1. And even then, there is some debate about how much calcium is actually in some bones. But cats don't become deficient overnight. And if your sticking remotely close to the guidelines outline on catnutrition. Then I wouldn't worry too much about a some bone not going through.

My tip for grinding things. Is to try and have the items to be ground, semi frozen but only a little. For me, it help move the food through the grinder while still getting a good grind. And if I needed to make a second pass, it was still frozen enough to grind smaller and move easily through the machine.
 

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Discussion Starter #5
Thanks for the info! Today I just bought two whole chicken and run through my grinder. Still just the soft bones left behind which is not a lot. :)
 
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