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Resources 2013, 2(3), 335-357; doi:10.3390/resources2030335
Article

Cattle Breeds: Extinction or Quasi-Extant?

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Received: 13 June 2013; in revised form: 31 July 2013 / Accepted: 10 August 2013 / Published: 27 August 2013
(This article belongs to the Special Issue Equitable and Sustainable Use of Genetic Resources)
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Abstract: Uniquely selected breeds bred over thousands of years of domestication in a wide range of environments have been declared extinct over the last century. Still more breeds are at risk of becoming extinct and the rate continues to accelerate. Assessing the current status and possible future dynamics of livestock breeds is therefore a critical step in the management of Animal Genetic Resources (AnGR). This study applies a qualitative approach to comprehensively analyze cattle genetic resources in selected countries in order to better understand the risk status of cattle breeds and those that need to be considered extinct and/or quasi-extant. The status of each breed, i.e., not at risk, critical, endangered and extinct, was verified using information available at the Domestic Animal Diversity Information System (DAD-IS) web site, as well as cattle statistics (where available) and a breed survey. In most examples, breeds listed as extinct have played important roles in the development of new breeds, and should not be classified as extinct, unless proven otherwise, given that even breeds existing in vivo are developing. Therefore, a new risk status quasi-extant for this category of cattle breeds is suggested. In addition, based on the findings of this study, the concept of breed needs to be questioned as relates to it being a good measure of genetic diversity. Further investigations of the situation of cattle breeds (and other livestock species) in more countries/continents using similar categories are deemed necessary.
Keywords: cattle; extinction; breeds; measures of diversity; risk classification cattle; extinction; breeds; measures of diversity; risk classification
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Bett, R.C.; Okeyo, M.A.; Malmfors, B.; Johansson, K.; Agaba, M.; Kugonza, D.R.; Bhuiyan, A.; Filho, A.E.V.; Mariante, A.S.; Mujibi, F.D.; Philipsson, J. Cattle Breeds: Extinction or Quasi-Extant? Resources 2013, 2, 335-357.

AMA Style

Bett RC, Okeyo MA, Malmfors B, Johansson K, Agaba M, Kugonza DR, Bhuiyan A, Filho AEV, Mariante AS, Mujibi FD, Philipsson J. Cattle Breeds: Extinction or Quasi-Extant? Resources. 2013; 2(3):335-357.

Chicago/Turabian Style

Bett, Rawlynce C.; Okeyo, Mwai A.; Malmfors, Birgitta; Johansson, Kjell; Agaba, Morris; Kugonza, Donald R.; Bhuiyan, A.K.F.H.; Filho, Anibal E.V.; Mariante, Arthur S.; Mujibi, Fidalis D.; Philipsson, Jan. 2013. "Cattle Breeds: Extinction or Quasi-Extant?" Resources 2, no. 3: 335-357.


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