Sexual dimorphism for juvenile body weight in chickens divergently selected for 8-week body weight
There is a dearth of literature on the genetics of sexual dimorphism for juvenile body weight in meat-type chickens given its biological and economic relevance. Herein, we report the sexual dimorphism for 4- and 8-week body weights in White Plymouth Rock chicken lines that have undergone 67 generati...
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Frontiers Media S.A.
2025-01-01
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| Series: | Frontiers in Physiology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphys.2024.1534334/full |
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| author | Paul B. Siegel Christa F. Honaker |
| author_facet | Paul B. Siegel Christa F. Honaker |
| author_sort | Paul B. Siegel |
| collection | DOAJ |
| description | There is a dearth of literature on the genetics of sexual dimorphism for juvenile body weight in meat-type chickens given its biological and economic relevance. Herein, we report the sexual dimorphism for 4- and 8-week body weights in White Plymouth Rock chicken lines that have undergone 67 generations of selection. Fluctuations in the degree of dimorphism occurred across generations, with greater dimorphism and less variation at 8 weeks than 4 weeks. Over the 67 generations, there was a significant decrease in the degree of dimorphism in the high line, with no changes in the low line. It is very difficult to genetically modify sexual dimorphism in a particular population using the currently available conventional tools, and nature possesses homeostatic mechanisms that maintain stasis in a population. |
| format | Article |
| id | doaj-art-fc0b72723b8345169d855ecbea5f717a |
| institution | Kabale University |
| issn | 1664-042X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Physiology |
| spelling | doaj-art-fc0b72723b8345169d855ecbea5f717a2025-01-20T07:20:23ZengFrontiers Media S.A.Frontiers in Physiology1664-042X2025-01-011510.3389/fphys.2024.15343341534334Sexual dimorphism for juvenile body weight in chickens divergently selected for 8-week body weightPaul B. SiegelChrista F. HonakerThere is a dearth of literature on the genetics of sexual dimorphism for juvenile body weight in meat-type chickens given its biological and economic relevance. Herein, we report the sexual dimorphism for 4- and 8-week body weights in White Plymouth Rock chicken lines that have undergone 67 generations of selection. Fluctuations in the degree of dimorphism occurred across generations, with greater dimorphism and less variation at 8 weeks than 4 weeks. Over the 67 generations, there was a significant decrease in the degree of dimorphism in the high line, with no changes in the low line. It is very difficult to genetically modify sexual dimorphism in a particular population using the currently available conventional tools, and nature possesses homeostatic mechanisms that maintain stasis in a population.https://www.frontiersin.org/articles/10.3389/fphys.2024.1534334/fullchickenbody weightselectiondimorphismhomeostasis |
| spellingShingle | Paul B. Siegel Christa F. Honaker Sexual dimorphism for juvenile body weight in chickens divergently selected for 8-week body weight Frontiers in Physiology chicken body weight selection dimorphism homeostasis |
| title | Sexual dimorphism for juvenile body weight in chickens divergently selected for 8-week body weight |
| title_full | Sexual dimorphism for juvenile body weight in chickens divergently selected for 8-week body weight |
| title_fullStr | Sexual dimorphism for juvenile body weight in chickens divergently selected for 8-week body weight |
| title_full_unstemmed | Sexual dimorphism for juvenile body weight in chickens divergently selected for 8-week body weight |
| title_short | Sexual dimorphism for juvenile body weight in chickens divergently selected for 8-week body weight |
| title_sort | sexual dimorphism for juvenile body weight in chickens divergently selected for 8 week body weight |
| topic | chicken body weight selection dimorphism homeostasis |
| url | https://www.frontiersin.org/articles/10.3389/fphys.2024.1534334/full |
| work_keys_str_mv | AT paulbsiegel sexualdimorphismforjuvenilebodyweightinchickensdivergentlyselectedfor8weekbodyweight AT christafhonaker sexualdimorphismforjuvenilebodyweightinchickensdivergentlyselectedfor8weekbodyweight |