NEVER cook or warm the raw food b4 giving them to ur dog especially the born. Cooked bone is more hard if compared to raw bone and this may be harmful to ur dog. Juz freeze them, then defrost them b4 feeding ur dog. Dun serve only chicken neck in a meal, mix it with other muscle meat, organ meat, vegetable and fruit. The quantity to feed should be 2-3% of ur dog weight (assuming ur dog is adult).

For more details, i think u can read through the whole thread, there is many useful information here.