Fiber density and hair ducts in the skin of alpacas: Quantification, heritability, and genetic correlations
Alpaca fibers are used to create luxury garments, and simultaneous selection for optimizing fiber density and the density of hair ducts in the skin of alpacas could result in a more profitable product for breeders. The objective of this study was i) to quantify fiber density (FibDen), density of hai...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Journal of the Saudi Society of Agricultural Sciences |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1658077X23000711 |
| _version_ | 1797388877966606336 |
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| author | Veronica Flores Ali William Canaza-Cayo Francisco Halley Rodríguez Emma Yovana Quina Max David Quispe Edgar Carlos Quispe |
| author_facet | Veronica Flores Ali William Canaza-Cayo Francisco Halley Rodríguez Emma Yovana Quina Max David Quispe Edgar Carlos Quispe |
| author_sort | Veronica Flores |
| collection | DOAJ |
| description | Alpaca fibers are used to create luxury garments, and simultaneous selection for optimizing fiber density and the density of hair ducts in the skin of alpacas could result in a more profitable product for breeders. The objective of this study was i) to quantify fiber density (FibDen), density of hair ducts (DenDuc), and the relationship between No. of fibers/No. of ducts (Fib/Duc) by age and sex, and ii) to estimate heritability and genetic correlation between FibDen and DenDuc. This study was conducted in the CEDAT (Centro de Desarrollo Alpaquero de Toccra) in the Department of Arequipa, Peru. A total of 1,813 alpacas of different sex and age with pedigree information were analyzed from years 2004–2018. The quantification of FibDen, DenDuc and Fib/Duc was estimated using Fiber-Den equipment in an area of 1 mm2 in the middle rib region of the animal. The average FibDen, DenDuc and Fib/Duc was 24.75 ± 5.48, 7.83 ± 2.17 and 3.25 ± 0.55, respectively. The heritability for FibDen, DenDuc, and Fib/Duc was 0.48 ± 0.04, 0.53 ± 0.04, and 0.20 ± 0.03, respectively. The genetic correlation between FibDen and DenDuc was 0.87 ± 0.06. The estimated heritabilities of these traits in Peruvian alpaca population are moderate to high and indicate that these characteristics could be used as selection criteria in breeding programs. |
| first_indexed | 2024-03-08T22:46:58Z |
| format | Article |
| id | doaj.art-5d6b33f894ba49a49638f12806b16792 |
| institution | Directory Open Access Journal |
| issn | 1658-077X |
| language | English |
| last_indexed | 2024-03-08T22:46:58Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of the Saudi Society of Agricultural Sciences |
| spelling | doaj.art-5d6b33f894ba49a49638f12806b167922023-12-17T06:37:50ZengElsevierJournal of the Saudi Society of Agricultural Sciences1658-077X2023-12-01228570575Fiber density and hair ducts in the skin of alpacas: Quantification, heritability, and genetic correlationsVeronica Flores0Ali William Canaza-Cayo1Francisco Halley Rodríguez2Emma Yovana Quina3Max David Quispe4Edgar Carlos Quispe5Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional del Altiplano, Puno, PerúFacultad de Ciencias Agrarias, Escuela Profesional de Ingeniería Agronómica, Universidad Nacional del Altiplano, Puno, Perú; Departamento de Estatística, Instituto de Ciências Exatas e Tecnológicas - ICET, Universidade Federal de Lavras, Lavras, MG, Brasil; Corresponding author.Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional del Altiplano, Puno, PerúCentro de Desarrollo Alpaquero Toccra CEDAT, Centro de Estudios y Promoción del Desarrollo, DESCOSUR, Arequipa, PerúArea de Innovaciones Tecnológicas. Maxcorp Technologies SAC, Lima, PerúArea de Innovaciones Tecnológicas. Maxcorp Technologies SAC, Lima, Perú; Departamento de Producción Animal, Facultad de Zootecnia, Universidad Nacional Agraria La Molina, Lima, Perú; Area de Fibras Textiles, Natural Fibeŕs Tech SAC., Santa Anita, PerúAlpaca fibers are used to create luxury garments, and simultaneous selection for optimizing fiber density and the density of hair ducts in the skin of alpacas could result in a more profitable product for breeders. The objective of this study was i) to quantify fiber density (FibDen), density of hair ducts (DenDuc), and the relationship between No. of fibers/No. of ducts (Fib/Duc) by age and sex, and ii) to estimate heritability and genetic correlation between FibDen and DenDuc. This study was conducted in the CEDAT (Centro de Desarrollo Alpaquero de Toccra) in the Department of Arequipa, Peru. A total of 1,813 alpacas of different sex and age with pedigree information were analyzed from years 2004–2018. The quantification of FibDen, DenDuc and Fib/Duc was estimated using Fiber-Den equipment in an area of 1 mm2 in the middle rib region of the animal. The average FibDen, DenDuc and Fib/Duc was 24.75 ± 5.48, 7.83 ± 2.17 and 3.25 ± 0.55, respectively. The heritability for FibDen, DenDuc, and Fib/Duc was 0.48 ± 0.04, 0.53 ± 0.04, and 0.20 ± 0.03, respectively. The genetic correlation between FibDen and DenDuc was 0.87 ± 0.06. The estimated heritabilities of these traits in Peruvian alpaca population are moderate to high and indicate that these characteristics could be used as selection criteria in breeding programs.http://www.sciencedirect.com/science/article/pii/S1658077X23000711Genetic parametersFiber quantificationBreeding programFiber-DenSex |
| spellingShingle | Veronica Flores Ali William Canaza-Cayo Francisco Halley Rodríguez Emma Yovana Quina Max David Quispe Edgar Carlos Quispe Fiber density and hair ducts in the skin of alpacas: Quantification, heritability, and genetic correlations Journal of the Saudi Society of Agricultural Sciences Genetic parameters Fiber quantification Breeding program Fiber-Den Sex |
| title | Fiber density and hair ducts in the skin of alpacas: Quantification, heritability, and genetic correlations |
| title_full | Fiber density and hair ducts in the skin of alpacas: Quantification, heritability, and genetic correlations |
| title_fullStr | Fiber density and hair ducts in the skin of alpacas: Quantification, heritability, and genetic correlations |
| title_full_unstemmed | Fiber density and hair ducts in the skin of alpacas: Quantification, heritability, and genetic correlations |
| title_short | Fiber density and hair ducts in the skin of alpacas: Quantification, heritability, and genetic correlations |
| title_sort | fiber density and hair ducts in the skin of alpacas quantification heritability and genetic correlations |
| topic | Genetic parameters Fiber quantification Breeding program Fiber-Den Sex |
| url | http://www.sciencedirect.com/science/article/pii/S1658077X23000711 |
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