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1...actually the poultry contains two types of animals called boilers and layers.
layers are the birds that lay eggs or are kept for Latin eggs.
the broilers are the birds that are used for making or having meat. they are first properly taken care and then oilled for meat.
2..Yes they lay fertilized eggs. because first male and female gametes fertilise in the hen.
2. hens lay fertilized eggs bcz there fertilization takes place inside d body 3. u cant obtain infertilized eggs but I hv a doubt in fishes d eggs r infertilised 4. they r fertilized bcz in a fertilized eggs d chick is semi developed it develops aftr incubation.