I used to have Khaki Campbells, they were prolific layers, the eggs were white, and they laid year round. They tend to get the eggs muddy, and you really have to scrub to get them clean, if the customer is wanting porcelain white. They lay year round, seems like they slowed down or stopped for molt, just like chickens, but it's been several years, and I don't remember for sure. If you have a male or two in the flock, you'll have fertile eggs, the drakes are...shall we say, very active.
Mine had a little plastic wading pool to play in, they really love it when you change the water. Apparently the sight of fresh water is an aphrodisiac to ducks.
I can't stomach even the idea of eating balut, and thinking of killing the partly formed embryos kinda turns my stomach. But I eat meat, and I raise and butcher my own. I guess if you incubate the eggs, and take them out of the 'bator at a certain point, and let the eggs cool, the embryos would probably fall asleep and die, peacefully unaware. I can think of worse ways to die.
