Nitesh, you can feed home-cooked food like Chicken-rice, boiled eggs, curd. You can buy bone-less chicken consisting of chicken chest and liver and mix it with rice. Boiled eggs can be given. You can mix one boiled egg with 2-3 pieces of bread in breakfast. One boiled egg can also be mixed with chicken and rice in evening meal.
You can also give him vegetables. Before you add spices and salt into vegetables, just separate some vegetables for your dog.
Dogs have very few taste busters unlike human and thus they have very little sense of taste. The thing that drives our pet to eat is the smell of the food. Aroma of freshly cooked home cooked food will drive your dog more than anything. On the other hand, packed commercial food has standard smell of chicken which dogs often get bored and used to after a week or so. You might notice your dog refusing or eating reluctantly kibbles. Also, packed dog food is dumped with preservatives. You might have a healthy kibble eating dog with you but as he grows older they run high risk of getting succumbed to lung and kidney disorders. Thus, our advise would be to feed only home-cooked food.
Should you still feel the urge to feed commercial food, you can choose from the below brands which are said to be relatively better than others in the market: Eukanuba, Royal Canine, Taste of Wild and Canobites.
You can search on Net on the average height of Alsations. But, the height and weight usually depend on the pedigree of the given dog.