There have been experiments using pea protein mixtures as a protein milk replacer for calves. Orphan lambs can be successfully raised on milk replacer, goat's milk, and cow's milk. Isomalt is used as a sugar replacer, for example in sugar-free candies and confectionery. The ideal levels for fat and protein in milk replacer are 10-28% and 18-30%, respectively. Terminology for pseudomorphs is ""replacer" after "original"", as in "brookite" after "rutile".