I've heard that yogurt is good for laying hens because of the extra calcium. They haven't started to lay yet. Would it be an issue of I gave my chickens yogurt? I think they are about 19wks. Also, I only have Dannon vanilla flavor. I don't buy the low fat Dannon because it has aspartame in it. (I figure if it is toxic to humans it won't be too good for chickens). I checked the ingredients and it lists: Milk, Sugar, Vanilla, Pectin. My second question is would it be okay to give them a little even though it has sugar? I just want to see if they like it so I don't wind up blowing money on plain yogurt just for them - ha. Thanks!