The economy of every country relies on the participation of different economic activities. The size and development of the various economic activities make them vary in size and participation to contribute to the national economy (national cake). In developing countries, the livestock sector does have a share in contributing to GDP ( gross domestic product) compared with other economic sectors. This sector in Tanzania is more significant in size and development than other East African countries; thus, its contribution to the economy (GDP) is uncertain in conjuction with other available alternative existing energies. This paper investigates the livestock sector's contribution to the economy with other African countries and relates to other economic activities. It maintains that such a comparison not only increases the performance of the livestock sector but also strengthens its relationship with other economic activities in order to increase its economic contribution. Our study shows that improved relations and linkages between the livestock sector and other economic sectors are essential to improving the performance of the sectors, investments, and, ultimately, improving its contribution to the economy. Based on the research and data collected from livestock sectors, the coefficient of correlation was made to relate to other economic activities to see their cooperation and determine the potential actions to be used innovatively.