Population genetic structure analysis and effect of inbreeding on body weights at different ages in Iranian Mehraban sheep
The objective of this study was to describe the population structure and inbreeding, and to quantify their effects on weights at different ages of Mehraban sheep in Iran. The analysis was based on the pedigree information of 26990 animals and 10278 body weight records from birth to yearling age. Dat...
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| Veröffentlicht in: | Journal of animal science and technology 2014, Vol.56 (8), p.31.1-31.9 |
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| creator | Yavarifard, Roya Hossein-Zadeh, Navid Ghavi Shadparvar, Abdol Ahad |
| description | The objective of this study was to describe the population structure and inbreeding, and to quantify their effects on weights at different ages of Mehraban sheep in Iran. The analysis was based on the pedigree information of 26990 animals and 10278 body weight records from birth to yearling age. Data and pedigree information were collected during 1994 to 2011 by the breeding station of Mehraban sheep. The population structure was analyzed using the CFC program. Inbreeding of all animals was calculated by INBUPGF90 program. All animals were grouped into three classes according to their inbreeding coefficients: the first class included non-inbred animals (F=0); and the second and third classes included inbred animals (0 |
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The analysis was based on the pedigree information of 26990 animals and 10278 body weight records from birth to yearling age. Data and pedigree information were collected during 1994 to 2011 by the breeding station of Mehraban sheep. The population structure was analyzed using the CFC program. Inbreeding of all animals was calculated by INBUPGF90 program. All animals were grouped into three classes according to their inbreeding coefficients: the first class included non-inbred animals (F=0); and the second and third classes included inbred animals (0<F<0.05 and $F{\geq}0.05$, respectively). The average inbreeding in Mehraban sheep was 1.69%. Founder equivalent ($f_e$) values were estimated to be 4244, 3116 and 2965 during 1994-1999, 2000-2005 and 2006-2011, respectively. The effective population sizes ($N_e$) were 363, 5080 and 5740 during 1994-1999, 2000-2005 and 2006-2011, respectively. Generation interval was 2.15 years for this breed of sheep. Regression coefficients of birth weight, 3-month weight, 6-month weight and yearling weight on lamb inbreeding were estimated to be -6.340.69, -14.685.33, 48.009.43 and 98.6515.65, respectively. Both positive and negative inbreeding effects were found in the current study. The utilization of a program for designed mating system, in the present flock, could be a suitable approach to keep the level of inbreeding under control.</description><identifier>ISSN: 2672-0191</identifier><identifier>EISSN: 2093-6281</identifier><language>kor</language><ispartof>Journal of animal science and technology, 2014, Vol.56 (8), p.31.1-31.9</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,4010</link.rule.ids></links><search><creatorcontrib>Yavarifard, Roya</creatorcontrib><creatorcontrib>Hossein-Zadeh, Navid Ghavi</creatorcontrib><creatorcontrib>Shadparvar, Abdol Ahad</creatorcontrib><title>Population genetic structure analysis and effect of inbreeding on body weights at different ages in Iranian Mehraban sheep</title><title>Journal of animal science and technology</title><addtitle>Journal of animal science and technology : JAST</addtitle><description>The objective of this study was to describe the population structure and inbreeding, and to quantify their effects on weights at different ages of Mehraban sheep in Iran. The analysis was based on the pedigree information of 26990 animals and 10278 body weight records from birth to yearling age. Data and pedigree information were collected during 1994 to 2011 by the breeding station of Mehraban sheep. The population structure was analyzed using the CFC program. Inbreeding of all animals was calculated by INBUPGF90 program. All animals were grouped into three classes according to their inbreeding coefficients: the first class included non-inbred animals (F=0); and the second and third classes included inbred animals (0<F<0.05 and $F{\geq}0.05$, respectively). The average inbreeding in Mehraban sheep was 1.69%. Founder equivalent ($f_e$) values were estimated to be 4244, 3116 and 2965 during 1994-1999, 2000-2005 and 2006-2011, respectively. The effective population sizes ($N_e$) were 363, 5080 and 5740 during 1994-1999, 2000-2005 and 2006-2011, respectively. Generation interval was 2.15 years for this breed of sheep. Regression coefficients of birth weight, 3-month weight, 6-month weight and yearling weight on lamb inbreeding were estimated to be -6.340.69, -14.685.33, 48.009.43 and 98.6515.65, respectively. Both positive and negative inbreeding effects were found in the current study. The utilization of a program for designed mating system, in the present flock, could be a suitable approach to keep the level of inbreeding under control.</description><issn>2672-0191</issn><issn>2093-6281</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>JDI</sourceid><recordid>eNqNzs9Kw0AQx_GlWLDYvsNcPAY2SZtkj1IU_yB66L1sspNkMEzKzgSpT-8efABP8z18fjArsymsK7OqaPKb1FVdZDZ3-a3ZiVBr94XNG3doNubnc74sk1eaGQZkVOpANC6dLhHBs5-uQpIiAPY9dgpzD8RtRAzEA6RZO4crfCMNoyaoECjBiKzgB5SE4SV6Js_wjmP0bQoZES9bs-79JLj7u3fm_unxdHzOvkiUzhxkOr8-vH2kX_e2rCtburpyrvyv-wVVf08W</recordid><startdate>2014</startdate><enddate>2014</enddate><creator>Yavarifard, Roya</creator><creator>Hossein-Zadeh, Navid Ghavi</creator><creator>Shadparvar, Abdol Ahad</creator><scope>JDI</scope></search><sort><creationdate>2014</creationdate><title>Population genetic structure analysis and effect of inbreeding on body weights at different ages in Iranian Mehraban sheep</title><author>Yavarifard, Roya ; Hossein-Zadeh, Navid Ghavi ; Shadparvar, Abdol Ahad</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-kisti_ndsl_JAKO2014037603976993</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>kor</language><creationdate>2014</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yavarifard, Roya</creatorcontrib><creatorcontrib>Hossein-Zadeh, Navid Ghavi</creatorcontrib><creatorcontrib>Shadparvar, Abdol Ahad</creatorcontrib><collection>KoreaScience</collection><jtitle>Journal of animal science and technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yavarifard, Roya</au><au>Hossein-Zadeh, Navid Ghavi</au><au>Shadparvar, Abdol Ahad</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Population genetic structure analysis and effect of inbreeding on body weights at different ages in Iranian Mehraban sheep</atitle><jtitle>Journal of animal science and technology</jtitle><addtitle>Journal of animal science and technology : JAST</addtitle><date>2014</date><risdate>2014</risdate><volume>56</volume><issue>8</issue><spage>31.1</spage><epage>31.9</epage><pages>31.1-31.9</pages><issn>2672-0191</issn><eissn>2093-6281</eissn><abstract>The objective of this study was to describe the population structure and inbreeding, and to quantify their effects on weights at different ages of Mehraban sheep in Iran. The analysis was based on the pedigree information of 26990 animals and 10278 body weight records from birth to yearling age. Data and pedigree information were collected during 1994 to 2011 by the breeding station of Mehraban sheep. The population structure was analyzed using the CFC program. Inbreeding of all animals was calculated by INBUPGF90 program. All animals were grouped into three classes according to their inbreeding coefficients: the first class included non-inbred animals (F=0); and the second and third classes included inbred animals (0<F<0.05 and $F{\geq}0.05$, respectively). The average inbreeding in Mehraban sheep was 1.69%. Founder equivalent ($f_e$) values were estimated to be 4244, 3116 and 2965 during 1994-1999, 2000-2005 and 2006-2011, respectively. The effective population sizes ($N_e$) were 363, 5080 and 5740 during 1994-1999, 2000-2005 and 2006-2011, respectively. Generation interval was 2.15 years for this breed of sheep. Regression coefficients of birth weight, 3-month weight, 6-month weight and yearling weight on lamb inbreeding were estimated to be -6.340.69, -14.685.33, 48.009.43 and 98.6515.65, respectively. Both positive and negative inbreeding effects were found in the current study. The utilization of a program for designed mating system, in the present flock, could be a suitable approach to keep the level of inbreeding under control.</abstract><oa>free_for_read</oa></addata></record> |
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| issn | 2672-0191 2093-6281 |
| language | kor |
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| source | DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central; PubMed Central Open Access |
| title | Population genetic structure analysis and effect of inbreeding on body weights at different ages in Iranian Mehraban sheep |
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