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论文范文
1. Introduction The conservation of local breeds should be considered whenever the development of animal production systems is discussed [1]. Conservation of genetic diversity is essential to the long-term survival of any species, particularly in light of changing environmental conditions [2], and is essential for management of threatened and endangered species [3] for sustainable use [4]. In the context of setting priorities for conservation, Barker [5] and Zárate and Markemann [6] suggested that the only rational criteria are the likelihood of extinction of a breed and the degree to which it possesses unique genes and threats the breed faces and farming shift in the production area. In Ethiopia, four cattle ranches are operating ex situ conservation measures of indigenous cattle breeds of the country. These ranches are Goba ranch that conserves Arsi cattle breed; Abernossa ranch that conserve Ethiopian Boran cattle; and Metekel and Andassa ranch that conserve Fogera cattle breed [7, 8]. But it is also clearly indicated that the success of these conservation efforts had shortcomings of political instability and/or inconsistency of development policies, limited stakeholder participation, and limitation of interventions in scope and scale that underestimates the conservation efforts [9]. Today, a large number of indigenous breeds or varieties in the developing world are at risk of becoming extinct [10]; likewise, at the moment breeds like Sheko cattle are highly threatened as a result of interbreeding; others like Fogera, Begayit, Ogaden, and Borena cattle breeds are also facing various degrees of threat [11]. The total population number of Fogera cattle had declined from time to time and it had declined in alarming rate from 1980’s [12] to 2000’s [13] that need conservation effort for future potential use of the breed. The main threatening problems that lower both the productivity and population are genetic admixture, shift of production system, shrinkage of grazing land, and poor management practices. These problems coupled with absence of sustainable conservation strategies for indigenous cattle breed resources of the country leads to the extinction of these breeds. Therefore, this paper is initiated to identify the grassroots problems and to design appropriate conservation strategies and breeding scheme for Fogera cattle breed that will be used as a lesson for other Ethiopian indigenous cattle breed resources. |
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