Genetic parameters for lifetime productivity in Holstein and Brown Swiss dairy cows in Honduras
Objective. To estimate the heritability (h2) of age at first parturition (AFP), longevity (L), useful life (UL), and productivity (P), as well as the genetic (rg) and phenotypic correlations between those traits in Brown Swiss and Holstein cows in Northwestern Honduras. Materials and methods. Cattl...
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Universidad de Cordoba
2023-09-01
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| Online Access: | https://revistamvz.unicordoba.edu.co/article/view/3199 |
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| author | Karen Alessa Copas-Medina Manuel Valladares-Rodas Juan José Baeza-Rodríguez José Candelario Segura-Correa Juan Magaña-Monforte |
| author_facet | Karen Alessa Copas-Medina Manuel Valladares-Rodas Juan José Baeza-Rodríguez José Candelario Segura-Correa Juan Magaña-Monforte |
| author_sort | Karen Alessa Copas-Medina |
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Objective. To estimate the heritability (h2) of age at first parturition (AFP), longevity (L), useful life (UL), and productivity (P), as well as the genetic (rg) and phenotypic correlations between those traits in Brown Swiss and Holstein cows in Northwestern Honduras. Materials and methods. Cattle were raised under tropical conditions and intensive management. The model for AFP assessed the effect of contemporary group (herd, year and birth season combination) as fixed. The model used for L, UL and P included the contemporary group, age group at first calving and their interaction. Data were analyzed using restricted maximum likelihood procedure, adjusted to a univariate and to a bivariate animal model. Results. The h2 estimated for AFP, L, UL and P were 0.16, 0.18, 0.25 and 0.09, respectively, in Brown Swiss cows, and 0.53, 0.49, 0.7 and 0.22, respectively in Holstein. Negative but favorable rg among Brown Swiss cow traits ranged from 0.31 to 0.46 between AFP and the other traits. However, for Holsteins cows, positive rg among AFP and the other traits here studied varied from 0.49 to 0.96. In both cattle breeds, rg among L, UL and P, traits were positive. Conclusions. For all traits evaluated low to medium heritability’s for BS suggest that a slow genetic improvement could be achieved if independent selection of traits is applied, and better response could be expected for H breed. For both breeds the positive rg among L, UL and P suggest thar similar selection criteria could be used.
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| format | Article |
| id | doaj-art-d7657686421c4edc82462c7f17d0fe4e |
| institution | Kabale University |
| issn | 0122-0268 1909-0544 |
| language | English |
| publishDate | 2023-09-01 |
| publisher | Universidad de Cordoba |
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| series | Revista MVZ Cordoba |
| spelling | doaj-art-d7657686421c4edc82462c7f17d0fe4e2025-02-11T17:17:20ZengUniversidad de CordobaRevista MVZ Cordoba0122-02681909-05442023-09-0128310.21897/rmvz.3199Genetic parameters for lifetime productivity in Holstein and Brown Swiss dairy cows in HondurasKaren Alessa Copas-Medina0Manuel Valladares-Rodas1https://orcid.org/0009-0000-5363-1154Juan José Baeza-Rodríguez2José Candelario Segura-Correa3https://orcid.org/0000-0003-1329-9948Juan Magaña-Monforte4https://orcid.org/0000-0002-0128-6747Universidad Autónoma de Yucatán, MéxicoUniversidad Autónoma de Yucatán, MéxicoInstituto Nacional de Investigación Forestal Agrícola y Pecuario, MéxicoUniversidad Autónoma de Yucatán, MéxicoUniversidad Autónoma de Yucatán, México. Objective. To estimate the heritability (h2) of age at first parturition (AFP), longevity (L), useful life (UL), and productivity (P), as well as the genetic (rg) and phenotypic correlations between those traits in Brown Swiss and Holstein cows in Northwestern Honduras. Materials and methods. Cattle were raised under tropical conditions and intensive management. The model for AFP assessed the effect of contemporary group (herd, year and birth season combination) as fixed. The model used for L, UL and P included the contemporary group, age group at first calving and their interaction. Data were analyzed using restricted maximum likelihood procedure, adjusted to a univariate and to a bivariate animal model. Results. The h2 estimated for AFP, L, UL and P were 0.16, 0.18, 0.25 and 0.09, respectively, in Brown Swiss cows, and 0.53, 0.49, 0.7 and 0.22, respectively in Holstein. Negative but favorable rg among Brown Swiss cow traits ranged from 0.31 to 0.46 between AFP and the other traits. However, for Holsteins cows, positive rg among AFP and the other traits here studied varied from 0.49 to 0.96. In both cattle breeds, rg among L, UL and P, traits were positive. Conclusions. For all traits evaluated low to medium heritability’s for BS suggest that a slow genetic improvement could be achieved if independent selection of traits is applied, and better response could be expected for H breed. For both breeds the positive rg among L, UL and P suggest thar similar selection criteria could be used. https://revistamvz.unicordoba.edu.co/article/view/3199Heritabilitycorrelationsdairy cattlecattletropics |
| spellingShingle | Karen Alessa Copas-Medina Manuel Valladares-Rodas Juan José Baeza-Rodríguez José Candelario Segura-Correa Juan Magaña-Monforte Genetic parameters for lifetime productivity in Holstein and Brown Swiss dairy cows in Honduras Revista MVZ Cordoba Heritability correlations dairy cattle cattletropics |
| title | Genetic parameters for lifetime productivity in Holstein and Brown Swiss dairy cows in Honduras |
| title_full | Genetic parameters for lifetime productivity in Holstein and Brown Swiss dairy cows in Honduras |
| title_fullStr | Genetic parameters for lifetime productivity in Holstein and Brown Swiss dairy cows in Honduras |
| title_full_unstemmed | Genetic parameters for lifetime productivity in Holstein and Brown Swiss dairy cows in Honduras |
| title_short | Genetic parameters for lifetime productivity in Holstein and Brown Swiss dairy cows in Honduras |
| title_sort | genetic parameters for lifetime productivity in holstein and brown swiss dairy cows in honduras |
| topic | Heritability correlations dairy cattle cattletropics |
| url | https://revistamvz.unicordoba.edu.co/article/view/3199 |
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