Yes the act of stripping can be stressful for the fish, it really depends on the fish and the experience and technique of the person. It does not, in my experience, stop the fish from spawning in the future. All the fish I have stripped have spawned again and again. Keep in mind that most cichlids will not actually rear their fry - I have let some of my fish spit naturally in their tanks and all fry get eaten.
Feeding: I use New Life Spectrum Grow for all my fry, even the tiny tiny shell dweller fry.
If you are feeding brineshrimp make sure they are decapsulated, otherwise you may harm your fish.
Edit: all replies that were below this post have been moved into a separate topic here:
http://www.perthcichlid.com.au/forum/index...showtopic=33806