So when they hatch it would be better to leave them with their mother. Im just not clear on the fact that if i leave the chicks with the mother for ever she will not go broody again.The very best thing is to let mom raise them. They grow faster and are hardier and I think better chickens for it. (And mom is rewarded for all that hard work!)
However, you can take them from her and heat lamp brood them, and if you do it right after hatch and put eggs under her she MIGHT begin to brood again; however that would be very hard on your hen. Brooding is hard work and takes a lot out of the hen. Her body will need to rebuild itself, which she does while she takes care of the chicks. Also taking the chicks away doesn't mean she will immediately start laying again nor brood again soon. Usually the hen molts after brooding, and in this time takes care of the chicks (anywhere until they are about 4 weeks to 12 weeks...how long varies depending upon the hen). In time, she begins to lay again, and after a time will brood again depending upon the bird and breed.
Silkies are notoriously broody so many will brood frequently. My Silkie is a frequent brooder. She hatches, tends them until about 8 to 10 weeks (mothering them), then "launches them" and begins to lay and be a chicken, and in time goes broody again...generally she broods 3 times a year.
I have not tried this but I did read an article that gets double the punch for the brood by starting eggs under a hen, taking those eggs away one week before lock down (at about 14 to 16 days) and finishes that bunch in an incubator, then puts another fresh set under the hen to finish out with the hen. That is about the most you could get out of one hen safely...nature has built in overlap so that most good broodies will brood for about 5 weeks.
Lady of McCamley