More productive milch breeds demand high energy during lactation period. So it acts as energy supplies.It increases the milk fat as well as milk production.It reduces the chance of infertility, loss of weight, ketosis, and lower milk production bia optimal energy supply.Long chain fatty acids (Linoleic, Linolenic, Palmitic acids) are used for the milk fat synthesis. These fatty acids adsorbed on to particles in the rumen where they are hydrogenated by microbes and absorbed only from the intestine which increases fat percentage in the milk.