COI code: CIGS15_062
Paper Language: English
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Authors Analysis of inbreeding in the closed population of Iranian Karakul sheepSaeedeh Sadeghi - MSc Student of animal breeding and genetics, Ahar Faculty of agriculture and natural resources, University of Tabriz, Iran
Mohammadreza Sheikhlou - Department of Animal Science, Ahar Faculty of Agriculture and Natural Resources, University of Tabriz, Iran
Rashid Safari - Department of Animal Science, Ahar Faculty of Agriculture and Natural Resources, University of Tabriz, Iran
Fateme Bahri Binabaj - Department of Animal Science, Faculty of Agricultural Science, University of Gonbad Kavoos, Gonbad Kavoos, Iran
Abstract:The objectives of this study were to estimate the inbreeding and parameters derived from inbreeding such as Ballou and Kalinowski ancestral inbreeding and partial inbreeding coefficients using the pedigree information collected from 1991 to 2016 in the breeding flock of Iranian Karakul sheep. Animals born between 2012 and 2016 with a pedigree completeness index of at least 0.6 were selected as a reference population to reflect the status of inbreeding in last generation. Average inbreeding in all animals and in the reference population were 0.85 and 1.36 percent, respectively. The rate of inbreeding was 0.05% per year and 0.16% per generation. Inbreeding of the animals in the reference population decomposed to the partial inbreeding from 280 founders. Only 108 founder have positive contribution to the inbreeding of the reference population. The 10 and 25 founders contributing the most to inbreeding explained 42 and 66% of the inbreeding of the reference population, respectively. Mean Ballou ancestral inbreeding in all animals and in the reference population were 1.17 and 2.12, respectively. The amount of Kalinowski ancestral inbreeding was low in this population, as mean Kalinowski ancestral inbreeding in all animals and in the reference population were 0.07 and 0.04, respectively. The estimated inbreeding and its trend were in acceptable level. The estimated partial inbreeding coefficients can be used in mating decisions to avoid inbreeding arising from founders with the greater contribution to inbreeding depression. Considering the estimated Ballous ancestral inbreeding, testing the incidence of purging of the deleterious alleles in this population are suggested.
Keywords:Inbreeding, Partial Inbreeding, Ancestral Inbreeding, Karakul sheep
COI code: CIGS15_062
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Sadeghi, Saeedeh; Mohammadreza Sheikhlou; Rashid Safari & Fateme Bahri Binabaj, 2018, Analysis of inbreeding in the closed population of Iranian Karakul sheep, The Third International and 15th National Genetics Congress, تهران, انجمن علمي ژنتيك ايران, https://www.civilica.com/Paper-CIGS15-CIGS15_062.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Sadeghi, Saeedeh; Mohammadreza Sheikhlou; Rashid Safari & Fateme Bahri Binabaj, 2018)
Second and more: (Sadeghi; Sheikhlou; Safari & Bahri Binabaj, 2018)
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Type: state university
Paper No.: 17284
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