That is very normal as there is fat inside all milk. After a period of time, the liquid fat will form a separate layer from water as it is denser. However, it is not safe to let your baby drink milk that has been left for more than an hour.
Among all the animal’s milk suitable for consumption, only cow and goat milk are nutritionally close to human and have been shown to be an excellent source of nutrition.Goat milk is closer to human because the protein profile is more similiar. Goat milk protein forms smaller and finer curd and has more than double the typical amount of medium chain triglyceride (MCT) in cow milk. Goat milk protein is much easier to digest and absorb and hence children have less incidence of having indigestion or allergy.
New Zealand’s dairy goats are fed on the green and lush pastures of New Zealand. The high quality of food for the goats corresponds directly to the quality of milk that they produce. In most other countries of the world, goats are fed on processed meal and grain. New Zealand goat milk is rich in alpha-s2-casein, and not the alpha-s1-casein variant which is known to cause allergic reactions in some children.