This research aims to investigate the effect of rising prices of animal feed components on the optimum summer and winter feed rations for dairy animal in Egypt. A linear Programming technique has been used to minimize the costs of various summer and winter rations. The research has utilized data from several resources  such as: the Animal Nutrition Department, Ministry of Agriculture, the experts of Animal Nutrition, some Arabic and English references related to chemical composition of feed staff's and animal requirements of Morrison .         The results showed that: the rising prices of the feedstuff's within the period 2007-2008 have influenced the quantity and optimum rations components. On the other hand, a rising of total costs of the rations has been occurred. The average percentage of the increase of the total cost for the optimum winter rations for the local cows, Egyptian buffaloes and Fresein cows amounted to 273%, 241% and 113% respectively. Also, the average percentage of the increase of the total cost of the optimum summer rations for fresein cows, local cows and Egyptian buffaloes amounted to 143%, 84% and 73% respectively.