Because of fluctuating prices for whey and other milk proteins, researchers are looking for a more consistently priced protein source for use in calf-milk replacers. And new research from the August Journal of Dairy Science shows that liquid egg may be a suitable alternative protein source.

The results show liquid egg does not hurt feed intake or calf growth if it makes up no more than 27 percent of the total protein in the milk replacer or 10 percent of the diet. The study explored the use of liquid egg in a conventional milk-replacer program where a calf is fed about 1 pound of milk replacer (formulated to contain 20 percent protein and 20 percent fat) per day.

However, more studies are needed to show that egg protein does not hurt calf performance before it can be included in milk replacer.