Since our mama cat was killed  last week, we have been bottle feeding the 4 left behind kittens. They were only a week old when they were orphaned, so we had to feed them every 3 hours.
We researched quite a bit and found that "KMR" (kitten milk replacer) is the recommended brand and can be purchased at farm and ranch supply stores. We also read that the kittens will often develop diarrhea if the formula is used as prescribed, without diluting it a little, because it seems to be too rich for the kittens.
We tried a "wait and see" approach, and sure enough they did develop diarrhea, so we are using the following formula with much better results:
- 1 Tablespoon powdered KMR
- 2 Tablespoons water
- 2 Tablespoons goat milk
- 1 teaspoon unflavored yogurt
1. Mix ingredients well.
2. Heat to body temperature.
3. Feed with tiny bottle or medicine dropper. 1 teaspoon every 3 hours for kittens 1-2 weeks old. 2 teaspoons every 4 hours for kittens 2-4 weeks old.
We have found that the kittens finish their portions much quicker when we use a medicine dropper. The bottle, no matter how we enlarged the hole in the nipple, always takes much longer.
When it is my turn to be on "kitten duty", I like to wipe their little bottoms before I feed them to ensure they don't do their business on my lap. This must be done to mimic how the mama cat licks them to stimulate urination and defecation.