Heritabilities and genetic trends for reproductive traits in a population of Romosinuano cattle in Colombia
Objective. The aim of this study was to estimate heritabilities and genetic trends for reproductive traits in a beef cattle population Romosinuano. Material and methods. Age at first calving (AFC), first calving interval (FCI), and second calving interval (SCI) were evaluated from a database generat...
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| Format: | Article |
| Language: | English |
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Universidad de Cordoba
2015-12-01
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| Series: | Revista MVZ Cordoba |
| Subjects: | |
| Online Access: | http://revistas.unicordoba.edu.co/revistamvz/mvz-211/pdf/v21n1a15.pdf |
| _version_ | 1819265616202170368 |
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| author | Oscar Vergara G. Gustavo Ossa S. Julieth Cabrera A. Juan Simanca S. Juan Pérez G. |
| author_facet | Oscar Vergara G. Gustavo Ossa S. Julieth Cabrera A. Juan Simanca S. Juan Pérez G. |
| author_sort | Oscar Vergara G. |
| collection | DOAJ |
| description | Objective. The aim of this study was to estimate heritabilities and genetic trends for reproductive traits in a beef cattle population Romosinuano. Material and methods. Age at first calving (AFC), first calving interval (FCI), and second calving interval (SCI) were evaluated from a database generated from 1951 to 2011 by Research Center Turipana. Unicaracter animal model was used, which included fixed of contemporary group (year-season), random direct genetic additives effects and residual. Estimates of variance components and genetic parameters were obtained through Restricted Maximum Likelihood procedure, using AIREMLF90 program. Genetic trends were calculated as a linear regression of weighted averages of breeding values over the years, using the REG procedure of Statistical Analysis System. Results. The indices of heritability for additive genetic effects were 0.04 ± 0.05 for AFC, 0.06 ± 0.06 for FCI, and 0.09 ± 0.06 for SCI. Conclusions. Low heritabilities indicating that should improve nutritional and management conditions in the herd, so that they can better express the traits evaluated. The estimated genetic trends were near zero, which shows that the objective of the CI Turipaná regarding this population has complied fully preserving the genetic variability of the breed Romosinuano. |
| first_indexed | 2024-12-23T20:48:12Z |
| format | Article |
| id | doaj.art-eb0e9701658e404990d6dff567321cfc |
| institution | Directory Open Access Journal |
| issn | 0122-0268 1909-0544 |
| language | English |
| last_indexed | 2024-12-23T20:48:12Z |
| publishDate | 2015-12-01 |
| publisher | Universidad de Cordoba |
| record_format | Article |
| series | Revista MVZ Cordoba |
| spelling | doaj.art-eb0e9701658e404990d6dff567321cfc2022-12-21T17:31:44ZengUniversidad de CordobaRevista MVZ Cordoba0122-02681909-05442015-12-0121152505257Heritabilities and genetic trends for reproductive traits in a population of Romosinuano cattle in ColombiaOscar Vergara G.0Gustavo Ossa S.1Julieth Cabrera A.2Juan Simanca S.3Juan Pérez G.4Universidad de Córdoba, Faculty of Veterinary and Zootechnical Medicine, Tropical Animal Production Research Group, Montería, Colombia.Corporación Colombiana de Investigaciones Agropecuarias CORPOICA, National Program for Animal Genetics and Biotechnology, C.I. Turipaná, Cereté, Colombia.Universidad de Córdoba, Faculty of Veterinary and Zootechnical Medicine, Tropical Animal Production Research Group, Montería, Colombia.Universidad de Córdoba, Faculty of Veterinary and Zootechnical Medicine, Tropical Animal Production Research Group, Montería, Colombia.Corporación Colombiana de Investigaciones Agropecuarias CORPOICA, National Program for Animal Genetics and Biotechnology, C.I. Turipaná, Cereté, Colombia.Objective. The aim of this study was to estimate heritabilities and genetic trends for reproductive traits in a beef cattle population Romosinuano. Material and methods. Age at first calving (AFC), first calving interval (FCI), and second calving interval (SCI) were evaluated from a database generated from 1951 to 2011 by Research Center Turipana. Unicaracter animal model was used, which included fixed of contemporary group (year-season), random direct genetic additives effects and residual. Estimates of variance components and genetic parameters were obtained through Restricted Maximum Likelihood procedure, using AIREMLF90 program. Genetic trends were calculated as a linear regression of weighted averages of breeding values over the years, using the REG procedure of Statistical Analysis System. Results. The indices of heritability for additive genetic effects were 0.04 ± 0.05 for AFC, 0.06 ± 0.06 for FCI, and 0.09 ± 0.06 for SCI. Conclusions. Low heritabilities indicating that should improve nutritional and management conditions in the herd, so that they can better express the traits evaluated. The estimated genetic trends were near zero, which shows that the objective of the CI Turipaná regarding this population has complied fully preserving the genetic variability of the breed Romosinuano.http://revistas.unicordoba.edu.co/revistamvz/mvz-211/pdf/v21n1a15.pdfAdditive geneticcreoleEPDsreproduction |
| spellingShingle | Oscar Vergara G. Gustavo Ossa S. Julieth Cabrera A. Juan Simanca S. Juan Pérez G. Heritabilities and genetic trends for reproductive traits in a population of Romosinuano cattle in Colombia Revista MVZ Cordoba Additive genetic creole EPDs reproduction |
| title | Heritabilities and genetic trends for reproductive traits in a population of Romosinuano cattle in Colombia |
| title_full | Heritabilities and genetic trends for reproductive traits in a population of Romosinuano cattle in Colombia |
| title_fullStr | Heritabilities and genetic trends for reproductive traits in a population of Romosinuano cattle in Colombia |
| title_full_unstemmed | Heritabilities and genetic trends for reproductive traits in a population of Romosinuano cattle in Colombia |
| title_short | Heritabilities and genetic trends for reproductive traits in a population of Romosinuano cattle in Colombia |
| title_sort | heritabilities and genetic trends for reproductive traits in a population of romosinuano cattle in colombia |
| topic | Additive genetic creole EPDs reproduction |
| url | http://revistas.unicordoba.edu.co/revistamvz/mvz-211/pdf/v21n1a15.pdf |
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