>Has there been any research done on feeding bees lactose sugar?

According to my copy of "The Hive and the Honeybee", lactose is poorly
digested by bees.  I used to use skim milk powder in my pollen extender mix,
but it was the most expensive ingredient.  Whey powder is really cheap, and
sweet (about 70% lactose), and I bought some intending to use that, but
after rereading the info, I decided to just feed it to calves.  Calves did
very well on it.

Stan