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南部非洲小农地区本土牛遗传资源的保护:化威胁为机遇——综述

Conservation of indigenous cattle genetic resources in Southern Africa's smallholder areas: turning threats into opportunities - A review.

作者信息

Nyamushamba G B, Mapiye C, Tada O, Halimani T E, Muchenje V

机构信息

Department of Livestock and Pasture Science, University of Fort Hare, Alice 5700, South Africa.

Department of Animal Sciences, Faculty of AgriSciences, Stellenbosch University, Matieland 7602, South Africa.

出版信息

Asian-Australas J Anim Sci. 2017 May;30(5):603-621. doi: 10.5713/ajas.16.0024. Epub 2016 Mar 22.

Abstract

The current review focuses on characterization and conservation efforts vital for the development of breeding programmes for indigenous beef cattle genetic resources in Southern Africa. Indigenous African cattle breeds were identified and characterized using information from refereed journals, conference papers and research reports. Results of this current review reviewed that smallholder beef cattle production in Southern Africa is extensive and dominated by indigenous beef cattle strains adaptable to the local environment. The breeds include Nguni, Mashona, Tuli, Malawi Zebu, Bovino de Tete, Angoni, Landim, Barotse, Twsana and Ankole. These breeds have important functions ranging from provision of food and income to socio-economic, cultural and ecological roles. They also have adaptive traits ranging from drought tolerant, resistance to ticks and tick borne diseases, heat tolerance and resistance to trypanosomosis. Stakeholders in the conservation of beef cattle were also identified and they included farmers, national government, research institutes and universities as well as breeding companies and societies in Southern Africa. Research efforts made to evaluate threats and opportunities of indigenous beef cattle production systems, assess the contribution of indigenous cattle to household food security and income, genetically and phenotypically characterize and conserve indigenous breeds, and develop breeding programs for smallholder beef production are highlighted. Although smallholder beef cattle production in the smallholder farming systems contributes substantially to household food security and income, their productivity is hindered by several constraints that include high prevalence of diseases and parasites, limited feed availability and poor marketing. The majority of the African cattle populations remain largely uncharacterized although most of the indigenous cattle breeds have been identified.

摘要

本次综述聚焦于对南部非洲本土肉牛遗传资源育种计划发展至关重要的特征描述和保护工作。利用来自学术期刊、会议论文和研究报告的信息,对非洲本土牛品种进行了识别和特征描述。本次综述的结果显示,南部非洲的小农户肉牛生产是粗放型的,且以适应当地环境的本土肉牛品种为主。这些品种包括恩古尼牛、马绍纳牛、图利牛、马拉维瘤牛、博维诺·德·泰特牛、安戈尼牛、兰迪姆牛、巴罗策牛、特瓦萨纳牛和安科莱牛。这些品种具有重要作用,从提供食物和收入到发挥社会经济、文化和生态功能。它们还具有多种适应性特征,如耐旱、抗蜱及蜱传疾病、耐热和抗锥虫病。还确定了肉牛保护的利益相关者,包括农民、国家政府、研究机构和大学,以及南部非洲的育种公司和协会。重点介绍了为评估本土肉牛生产系统的威胁和机遇、评估本土牛对家庭粮食安全和收入的贡献、从基因和表型上对本土品种进行特征描述和保护,以及制定小农户肉牛生产育种计划所做的研究工作。尽管小农户养殖系统中的小农户肉牛生产对家庭粮食安全和收入有重大贡献,但其生产力受到多种制约因素的阻碍,包括疾病和寄生虫高发、饲料供应有限以及营销不佳。尽管大多数本土牛品种已被识别,但非洲大多数牛群在很大程度上仍未得到特征描述。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce2c/5411820/1c599b95fb41/ajas-30-5-603f1.jpg

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