Genetic and environmental effects on semen traits in Lacaune and Manech tête rousse AI rams (<it>Open Access publication</it>)
<p>Abstract</p> <p>Data from 51 107 and 11 839 ejaculates collected on rams of the <it>"Lacaune" </it>and <it>"Manech tête rousse" </it>breeds, respectively, were analysed to determine environmental and genetic factors affecting semen pro...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | deu |
| Published: |
BMC
2007-07-01
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| Series: | Genetics Selection Evolution |
| Subjects: | |
| Online Access: | http://www.gse-journal.org/content/39/4/405 |
| _version_ | 1828465760244072448 |
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| author | Bodin Loys Robert-Granié Christèle Manfredi Eduardo Lagriffoul Gilles Druart Xavier David Ingrid |
| author_facet | Bodin Loys Robert-Granié Christèle Manfredi Eduardo Lagriffoul Gilles Druart Xavier David Ingrid |
| author_sort | Bodin Loys |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Data from 51 107 and 11 839 ejaculates collected on rams of the <it>"Lacaune" </it>and <it>"Manech tête rousse" </it>breeds, respectively, were analysed to determine environmental and genetic factors affecting semen production traits (ejaculate volume, semen concentration, number of spermatozoa and motility) in young (≤1 year) and adult (≥2 years) rams. Fixed effects and variance components were estimated using multiple trait animal models within each breed. For all traits, the main environmental effects identified were year, season, number of ejaculations, daily variation, interval from previous to current collection and age. Heritability estimates were moderate for volume, concentration and number of spermatozoa (0.12 to 0.33) and lower for motility (0.02 to 0.14). Genetic correlations between ages differed from 1 for all traits (0.14 to 0.90), indicating that semen characteristics corresponded to different traits in young and adult rams. Genetic and phenotypic correlations among traits within age category were globally similar for the different breeds and categories of animals.</p> |
| first_indexed | 2024-12-11T03:37:48Z |
| format | Article |
| id | doaj.art-641940bfdd7c4723ac60e22dfa6e6dbc |
| institution | Directory Open Access Journal |
| issn | 0999-193X 1297-9686 |
| language | deu |
| last_indexed | 2024-12-11T03:37:48Z |
| publishDate | 2007-07-01 |
| publisher | BMC |
| record_format | Article |
| series | Genetics Selection Evolution |
| spelling | doaj.art-641940bfdd7c4723ac60e22dfa6e6dbc2022-12-22T01:22:12ZdeuBMCGenetics Selection Evolution0999-193X1297-96862007-07-0139440541910.1186/1297-9686-39-4-405Genetic and environmental effects on semen traits in Lacaune and Manech tête rousse AI rams (<it>Open Access publication</it>)Bodin LoysRobert-Granié ChristèleManfredi EduardoLagriffoul GillesDruart XavierDavid Ingrid<p>Abstract</p> <p>Data from 51 107 and 11 839 ejaculates collected on rams of the <it>"Lacaune" </it>and <it>"Manech tête rousse" </it>breeds, respectively, were analysed to determine environmental and genetic factors affecting semen production traits (ejaculate volume, semen concentration, number of spermatozoa and motility) in young (≤1 year) and adult (≥2 years) rams. Fixed effects and variance components were estimated using multiple trait animal models within each breed. For all traits, the main environmental effects identified were year, season, number of ejaculations, daily variation, interval from previous to current collection and age. Heritability estimates were moderate for volume, concentration and number of spermatozoa (0.12 to 0.33) and lower for motility (0.02 to 0.14). Genetic correlations between ages differed from 1 for all traits (0.14 to 0.90), indicating that semen characteristics corresponded to different traits in young and adult rams. Genetic and phenotypic correlations among traits within age category were globally similar for the different breeds and categories of animals.</p>http://www.gse-journal.org/content/39/4/405ramsemenenvironmental factor |
| spellingShingle | Bodin Loys Robert-Granié Christèle Manfredi Eduardo Lagriffoul Gilles Druart Xavier David Ingrid Genetic and environmental effects on semen traits in Lacaune and Manech tête rousse AI rams (<it>Open Access publication</it>) Genetics Selection Evolution ram semen environmental factor |
| title | Genetic and environmental effects on semen traits in Lacaune and Manech tête rousse AI rams (<it>Open Access publication</it>) |
| title_full | Genetic and environmental effects on semen traits in Lacaune and Manech tête rousse AI rams (<it>Open Access publication</it>) |
| title_fullStr | Genetic and environmental effects on semen traits in Lacaune and Manech tête rousse AI rams (<it>Open Access publication</it>) |
| title_full_unstemmed | Genetic and environmental effects on semen traits in Lacaune and Manech tête rousse AI rams (<it>Open Access publication</it>) |
| title_short | Genetic and environmental effects on semen traits in Lacaune and Manech tête rousse AI rams (<it>Open Access publication</it>) |
| title_sort | genetic and environmental effects on semen traits in lacaune and manech tete rousse ai rams it open access publication it |
| topic | ram semen environmental factor |
| url | http://www.gse-journal.org/content/39/4/405 |
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