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Pedigree and herd characterization of a donkey breed vulnerable to extinction

Published online by Cambridge University Press:  13 December 2013

M. Quaresma ,
A. M. F. Martins ,
J. B. Rodrigues ,
J. Colaço  and
R. Payan-Carreira
M. Quaresma*
Affiliation:
Hospital Veterinário da UTAD, Escola Ciências Agrárias e Veterinárias (ECAV) – Universidade de Trás-os-Montes e Alto Douro, PO Box 1013, 5000-801 Vila Real, Portugal Centro de Estudos Ciências Agrárias e Veterinárias (CECAV) – Universidade de Trás-os-Montes e Alto Douro, PO Box 1013, 5000-801 Vila Real, Portugal
A. M. F. Martins
Affiliation:
Centro de Estudos Ciências Agrárias e Veterinárias (CECAV) – Universidade de Trás-os-Montes e Alto Douro, PO Box 1013, 5000-801 Vila Real, Portugal
J. B. Rodrigues
Affiliation:
Departamento de Ciências Veterinárias – Universidade de Trás-os-Montes e Alto Douro, PO Box 1013, 5000-801 Vila Real, Portugal
J. Colaço
Affiliation:
Centro de Estudos Ciências Agrárias e Veterinárias (CECAV) – Universidade de Trás-os-Montes e Alto Douro, PO Box 1013, 5000-801 Vila Real, Portugal
R. Payan-Carreira
Affiliation:
Centro de Estudos Ciências Agrárias e Veterinárias (CECAV) – Universidade de Trás-os-Montes e Alto Douro, PO Box 1013, 5000-801 Vila Real, Portugal
*
†E-mail: [email protected]
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Abstract

Most donkey and local horse breeds are vulnerable to extinction as mechanization of agriculture progress throughout the world. The present study analyzed the pedigree and herd records of the donkey Asinina de Miranda breed (RAM), identifying genealogical and human factors that may affect the breed genetic diversity in the future and suggesting suitable strategies to breed preservation, early on the conservation program. The breeding rate was very low, with a ratio of foaling/live animals of 0.23 (178/760). The estimated number of founders and ancestors contributing to the reference population was 128 and 121. The number of founder herds in the reference population was 64, with an effective number of founder herds for the reference population of 7.6. The mean age of herd owners was 65.50±0.884 years, with a negative association among the herd size and owner’s age (P<0.001). In contrast, the size of the herd and the ownership of a male were both positively associated (P<0.001) with the herd number of in-born foals. Both the owners’ age and the herd location (RAM home region v. dispersal region) were negatively associated with the foaling number (P<0.001). The main identified risk factors were: low breeding rates; low number of males and their unequal contribution to the genetic pool; unequal contribution of the herds to genetic pool; and advanced age of herd owners.

Keywords

conservationdonkeyherdsinbreedingpedigree analysis
Type
Full Paper
Information
animal , Volume 8 , Issue 3 , March 2014 , pp. 354 - 359
Copyright
© The Animal Consortium 2013 

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References

Alderson, L 1992. A system to maximize the maintenance of genetic variability in small populations. In Genetic conservation of domestic livestock II (ed. L Alderson and I Bodo), pp. 18–29. CABI Publishing, Wallingford, UK.Google Scholar
Bennewitz, J, Kantanen, J, Tapio, I, Li, MH, Kalm, E, Vilkki, J, Ammosov, I, Ivanova, Z, Kiselyova, T, Popov, R and Meuwissen, TH 2006. Estimation of breed contributions to present and future genetic diversity of 44 North Eurasian cattle breeds using core set diversity measures. Genetics, Selection and Evolution 38, 201–220.Google Scholar
Boichard, D, Maignel, L and Verrier, E 1997. The value of using probabilities of gene origin to measure genetic variability in a population. Genetics, Selection and Evolution 29, 5–23.Google Scholar
Bordonaro, S, Guastella, AM, Criscione, A, Zuccaro, A and Marletta, D 2012. Genetic diversity and variability in endangered Pantesco and two other Sicilian donkey breeds assessed by microsatellite markers. Scientific World Journal. Retrieved from http://www.hindawi.com/journals/tswj/2012/648427/ CrossRefGoogle ScholarPubMed
Caballero, A and Toro, MA 2002. Analysis of genetic diversity for the management of conserved subdivided populations. Conservation Genetics 3, 289–299.Google Scholar
Cecchi, F, Ciampolini, R, Ciani, E, Matteoli, B, Mazzanti, E, Tancredi, M and Presciuttini, S 2006. Demographic genetics of the endangered Amiata donkey breed. Italian Journal of Animal Science 5, 387–392.Google Scholar
Dunner, S, Checa, ML, Gutiérrez, JP, Martin, JP and Canõn, J 1998. Genetic analysis and management in small populations: the Asturcon pony as an example. Genetics, Selection and Evolution 30, 397–405.Google Scholar
Falconer, DS and Mackay, FCT 1996. Introduction to quantitative genetics, 4th edition. Longman Group Ltd, Harlow, Essex, England.Google Scholar
Gutiérrez, JP and Goyache, F 2005. A note on ENDOG: a computer program for analysing pedigree information. Journal of Animal Breeding and Genetics 122, 172–176.Google Scholar
Gutiérrez, JP, Marmi, J, Goyache, F and Jordana, J 2005. Pedigree information reveals moderate to high levels of inbreeding and a weak population structure in the endangered Catalonian donkey breed. Journal of Animal Breeding and Genetics 122, 378–386.Google Scholar
Instituto Nacional de Estatística 2011. Recenseamento agrícola – análise dos principais resultados. Efetivos pecuários, Lisboa, Portugal. Retrieved December 15, 2012, from www.ine.pt/ngt_server/attachfileu.jsp?look_parentBoui=120034335&att_display=n&att_download=y Google Scholar
Lacy, RC 1989. Analysis of founder representation in pedigrees: founder equivalents and founder genome equivalents. Zoo Biology 8, 111–123.Google Scholar
Luís, C, Cothran, EG and Oom M do, M 2007. Inbreeding and genetic structure in the endangered Sorraia horse breed: implications for its conservation and management. Journal of Heredity 98, 232–237.Google Scholar
Lutaaya, E, Misztal, I, Bertrand, JK and Mabry, JW 1999. Inbreeding in populations with incomplete pedigrees. Journal of Animal Breeding and Genetics 116, 475–480.Google Scholar
Meuwissen, THE 1999. Operation of conservation schemes. In Genebanks and the conservation of farm animal genetic resources (ed. KK Oldenbroek), pp. 9–112. DLO Institute for Animal Science and Health, Lelystad, The Netherlands.Google Scholar
Rischkowsky, B and Pilling, D 2007. FAO: The State of the World’s Genetic Resources for Food and Agriculture. FAO, Rome, Italy.Google Scholar
Rizzi, R, Tullo, E, Cito, AM, Caroli, A and Pieragostini, E 2011. Monitoring of genetic diversity in the endangered Martina Franca donkey population. Journal of Animal Science 89, 1304–1311.Google Scholar
Valera, M, Molina, A, Gutiérrez, JP, Gómez, J and Goyache, F 2005. Pedigree analysis in the Andalusian horse: population structure, genetic variability and influence of the Carthusian strain. Livestock Production Science 95, 57–66.CrossRefGoogle Scholar
Vicente, AA, Carolino, N and Gama, LT 2012. Genetic diversity in the Lusitano horse breed assessed by pedigree analysis. Livestock Science 148, 16–25.Google Scholar
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