Pedigree analysis of Ile de France sheep breed in Bulgaria
Zhivko Duchev
, Evgeniya Achkakanova
Abstract: The objective of this study was to assess the pedigree information of the Ile de France sheep population in Bulgaria, and determine its structure and inbreeding status. The pedigree was compiled from the herdbook data of the established in 2006 breeding association, the breeding certificates of imported animals and other data about the imports. The pedigree included animals born between 2001 and 2022, lambs born during 2019–2022 were considered as reference population. Starting from 2020, the completeness of the first generation of pedigree exceeded 98% and that of the second generation - 80%. The equivalent complete generations for the reference population are 2.2, the fully traced generations – 1.8 and the maximum number of traced generations - 7. The generation interval is 3.8 years for the whole population, but higher in the reference one – from 4.3 to 4.5 years. The rate of inbreeding is increasing in the last years, reaching 0.0147 in 2022. There is a proportion of animals with high inbreeding coefficient level, which should be considered in the management of the breeding programme.
Keywords: data completeness; generation interval; herdbook; inbreeding; population
Citation: Duchev, Zh. & Achkakanova, E. (2024). Pedigree analysis of Ile de France sheep breed in Bulgaria. Bulg. J. Agric. Sci., 30(6), 1097–1101
| References: (click to open/close) | Association for breeding of Ile de France sheep in Bulgaria (2023). Annual Report (01.01.2022 – 31.12.2022). Stara Zagora (Bg).
Borges Barbosa, A. C. B., de Souza Romano, G., Del Solar Velarde, J. M., Ferraz, J. B. S., Pedrosa, V. B. & Pinto, L. F. B. (2020). Pedigree analysis of Santa Inês sheep and inbreeding effects on performance traits. Revista Mexicana de Ciencias Pecuarias, 11(2), 590-604. https://doi.org/10.22319/rmcp.v11i2.4899.
Danchin-Burge, C., Palhière, I., François, D., Bibé, B., Leroy, G. & Verrier, E. (2010). Pedigree analysis of seven small French sheep populations and implications for the management of rare breeds. Journal of Animal Science, 88(2), 505-516. https://doi.org/10.2527/jas.2009-1961.
Dimitrov, Il., Slavov, R. & Achkakanova – Dimitrova, E. (2016). Selection program for breeding the Ile de France. ISBN 978-619-90142-1-9, Stara Zagora (Bg).
Duchev, Zh. & Achkakanova, E. (2023). Analysis of the imports of Ile de France animals in Bulgaria, 2005-2023. Bulgarian Journal of Animal Husbandry, 60(6), 25-30. https://doi.org/10.61308/RDHU2098 (Bg).
FAO (2013). In vivo conservation of animal genetic resources. FAO Animal Production and Health Guidelines, No. 14, Rome. https://www.fao.org/3/i3327e/i3327e.pdf.
Falconer, D. S. & Mackay, T. F. C. (1996). Introduction to Quantitative Genetics. (4th ed.) Longman Group, LTD., Harlow, Essex, UK.
Fernández, J., Villanueva, B., Pong-Wong, R. & Toro, M. A. (2005). Efficiency of the use of pedigree and molecular marker information in conservation programs. Genetics, 170(3), 1313–1321. https://doi.org/10.1534/genetics.104.037325.
Filipčík, R., Falta, D., Sokolová, D., Hošek, M., Pešan, V. & Kopec, T. (2023). Inbreeding in the Zwartbles breed population and its influence on meat production in the Czech Republic. Archives Animal Breeding, 66(3), 245–252. https://doi.org/10.5194/aab-66-245-2023.
Ghafouri-Kesbi, F. (2010). Analysis of genetic diversity in a close population of Zandi sheep using genealogical information. Journal of Genetics, 89(4), 479-483. https://doi.org/10.1007/s12041-010-0068-0.
Gowane, G. R., Chopra, A., Misra, S. S. & Prince, L. L. L. (2014). Genetic diversity of a nucleus flock of Malpura sheep through pedigree analyses. Small Ruminant Research, 120(1), 35-41. https://doi.org/10.1016/j.smallrumres.2014.04.016.
Goyache, F., Gutierrez, J. P., Fernandez, I., Gomes, E., Alvarez, I., Díez, J. & Royo, L. J. (2003). Using pedigree information to monitor genetic variability of endangered population: the Xalda sheep breed of Asturias as an example. Journal of Animal Breeding and Genetics, 120(2), 95–105. https://doi.org/10.1046/j.1439-0388.2003.00378.x.
Groeneveld, E., Westhuizen, B. V. D., Maiwashe, A., Voordewind, F. & Ferraz, J. B. S. (2009). POPREP: a generic report for population management. Genetics and Molecular Research, 8(3), 1158-1178. https://doi.org/10.4238/vol8-3gmr648.
Huby, M., Griffon, L., Moureaux, S., De Rochambeau, H., Danchin-Burge, C. & Verrier, E. (2003). Genetic variability of six French meat sheep breeds in relation to their genetic management. Genetics Selection Evolution, 35(6), 637-655. https://doi.org/10.1186/1297-9686-35-7-637.
Justinski, C., Wilkens, J. & Distl, O. (2023). Genetic diversity and trends of ancestral and new inbreeding in German sheep breeds by pedigree data. Animals,13(4), 623. https://doi.org/10.3390/ani13040623.
Kiya, C. K., Pedrosa, V. B., Muniz, K. F. A., Gusmão, A. L. & Batista, L. F. P. (2019). Population structure of a nucleus herd of Dorper sheep and inbreeding effects on growth, carcass, and reproductive traits. Small Ruminant Research, 177, 141–145. https://doi.org/10.1016/j.smallrumres.2019.06.015.
MacCluer, J. W., Boyce, A. J., Dyke, B., Weitkamp, L. R., Pfennig, D. W. & Parsons, C. J. (1983). Inbreeding and pedigree structure in Standardbred horses. Journal of Heredity, 74(6), 394–399. https://doi.org/10.1093/oxfordjournals.jhered.a109824.
Maignel, L., Boichard, D. & Verrier, E. (1996). Genetic variability of French dairy breeds estimated from pedigree information. Interbull. Bulletin, 14, 49–54.
Mokhtari, M. S., Shahrbabak, M. M., Esmailizadeh, A. K., Abdollahi-Arpanahi, R. & Gutierrez, J. P. (2013). Genetic diversity in Kermani sheep assessed from pedigree analysis. Small Ruminant Research, 114(2–3), 202-205. https://doi.org/10.1016/j.smallrumres.2013.07.001.
Mokhtari, M. S., Shahrbabak, M. M., Esmailizadeh, A. K., Shahrbabak, H. M. & Gutierrez, J. P. (2014). Pedigree analysis of Iran-Black sheep and inbreeding effects on growth and reproduction traits. Small Ruminant Research, 116(1), 14-20. https://doi.org/10.1016/j.smallrumres.2013.10.008.
Nilson, S. M., Burke, J. M., Murdoch, B. M., Morgan, J. L. M. & Lewis, R. M. (2023). Pedigree diversity and implications for genetic selection of Katahdin sheep. Journal of Animal Breeding and Genetics, 141(3), 304-316. https://doi.org/10.1111/jbg.12842.
Norberg, E. & Sorensen, A. C. (2007). Inbreeding trend and inbreeding depression in the Danish populations of Texel, Shropshire, and Oxford Down. Journal of Animal Science, 85(2), 299–304. https://doi.org/10.2527/jas.2006-257.
Oravcova, M. & Krupa, E. (2011). Pedigree analysis of the former Valachian sheep. Slovak Journal of Animal Science, 44(1), 6–12.
Rochus, C. M. & Johansson, A. M. (2017). Estimation of genetic diversity in Gute sheep: pedigree and microsatellite analyses of an ancient Swedish breed. Hereditas, 154(4), 1-7. https://doi.org/10.1186/s41065-017-0026-4.
Sørensen, A. C., Sørensen, M. K. & Berg, P. (2005). Inbreeding in Danish dairy cattle breeds. Journal of Dairy Science, 88(5), 1865-1872. https://doi.org/10.3168/jds.S0022-0302(05)72861-7.
Tsiokos, D. & Ligda, C. (2021). Monitoring inbreeding and selection on scrapie resistance in a closed nucleus of Florina sheep breed. Small Ruminant Research, 201, 106422. https://doi.org/10.1016/j.smallrumres.2021.106422.
Vozzi, P. A., Marcondes, C. R., Bezerra, L. A. & Lôbo, R. B. (2007). Pedigree analyses in the breeding program for Nellore cattle. Genetics and Molecular Research, 6(4),1044-1050, PMID: 18273797.
Vyas, J., Chopra, A., Pannu, U., Saran, R. K. & Narula, H. K. (2022). Population structure of Marwari sheep through pedigree analysis. Small Ruminant Research, 206, 106590. https://doi.org/10.1016/j.smallrumres.2021.106590.
Wellmann, R. (2019). Optimum contribution selection for animal breeding and conservation: the R package optiSel. BMC Bioinformatics, 20(25). https://doi.org/10.1186/s12859-018-2450-5.
Zhelyazkova, P., Dimov, D. & Andonov, S. (2023). Genetic-parameter estimation of milk yield in White Maritza sheep breed using different test day models. Archives Animal Breeding, 66(3), 253-263. https://doi.org/10.5194/aab-66-253-2023. |
|
| Date published: 2024-12-16
Download full text 
