Parameters and genetic trends for reproductive characteristics of a closed Angus herd
Background: Closed breeding populations are usefull to conduct basic and applied research. The Wye Angus herd is one of them. It was founded using only a few animals. The pedigree of the descendants of the original herd can be completely described by historical records resulting from strong selectio...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Universidad de Antioquia
2019-07-01
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| Series: | Revista Colombiana de Ciencias Pecuarias |
| Subjects: | |
| Online Access: | https://revistas.udea.edu.co/index.php/rccp/article/view/336447 |
| _version_ | 1818693068025495552 |
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| author | Vanius B. Falleiro Paulo L. S. Carneiro Jose A. Carrilo Marcos P. G. Rezende Marcelo Cervini Carlos H. M. Malhado |
| author_facet | Vanius B. Falleiro Paulo L. S. Carneiro Jose A. Carrilo Marcos P. G. Rezende Marcelo Cervini Carlos H. M. Malhado |
| author_sort | Vanius B. Falleiro |
| collection | DOAJ |
| description | Background: Closed breeding populations are usefull to conduct basic and applied research. The Wye Angus herd is one of them. It was founded using only a few animals. The pedigree of the descendants of the original herd can be completely described by historical records resulting from strong selection. Wye Angus genetics has influenced that of Aberdeen Angus, Red Angus, and Brangus cattle worldwide. Objective: To evaluate parameters and genetic trends associated with the reproduction traits of the Wye Angus herd between the years 1937 and 2012. Methods: We used pedigree information of 11,692 individuals. The reproductive traits assessed were age at first calving (AFC), calving interval (CI), and scrotal circumference (SC). The covariance components were estimated by Bayesian inference. The genetic trends were obtained by linear regression of the genetic values over birth years of the animals. Results: The heritability estimates for AFC, and CI were negligible, although a small genetic gain was associated with CI. Because the AFC and CI values of the herd are small, past reproductive management has produced favourable results for the heifers. Conclusion: The Wye Angus herd has enough genetic variability for genetic gain through selection on SC. |
| first_indexed | 2024-12-17T13:07:48Z |
| format | Article |
| id | doaj.art-485f6b258fc142f29cf8d35be23692bc |
| institution | Directory Open Access Journal |
| issn | 2256-2958 |
| language | English |
| last_indexed | 2024-12-17T13:07:48Z |
| publishDate | 2019-07-01 |
| publisher | Universidad de Antioquia |
| record_format | Article |
| series | Revista Colombiana de Ciencias Pecuarias |
| spelling | doaj.art-485f6b258fc142f29cf8d35be23692bc2022-12-21T21:47:12ZengUniversidad de AntioquiaRevista Colombiana de Ciencias Pecuarias2256-29582019-07-0132319220010.17533/udea.rccp.v32n3a0435129Parameters and genetic trends for reproductive characteristics of a closed Angus herdVanius B. Falleiro0Paulo L. S. Carneiro1Jose A. Carrilo2Marcos P. G. Rezende3Marcelo Cervini4Carlos H. M. Malhado5State University of Southwest BahiaState University of Southwest BahiaUniversity of MarylandState University of Southwest BahiaState University of Southwest BahiaState University of Southwest BahiaBackground: Closed breeding populations are usefull to conduct basic and applied research. The Wye Angus herd is one of them. It was founded using only a few animals. The pedigree of the descendants of the original herd can be completely described by historical records resulting from strong selection. Wye Angus genetics has influenced that of Aberdeen Angus, Red Angus, and Brangus cattle worldwide. Objective: To evaluate parameters and genetic trends associated with the reproduction traits of the Wye Angus herd between the years 1937 and 2012. Methods: We used pedigree information of 11,692 individuals. The reproductive traits assessed were age at first calving (AFC), calving interval (CI), and scrotal circumference (SC). The covariance components were estimated by Bayesian inference. The genetic trends were obtained by linear regression of the genetic values over birth years of the animals. Results: The heritability estimates for AFC, and CI were negligible, although a small genetic gain was associated with CI. Because the AFC and CI values of the herd are small, past reproductive management has produced favourable results for the heifers. Conclusion: The Wye Angus herd has enough genetic variability for genetic gain through selection on SC.https://revistas.udea.edu.co/index.php/rccp/article/view/336447angusbayesiancattlegenetic trendsgenetic variabilitygenetic parametersheritabilitypedigreereproductive traitssire |
| spellingShingle | Vanius B. Falleiro Paulo L. S. Carneiro Jose A. Carrilo Marcos P. G. Rezende Marcelo Cervini Carlos H. M. Malhado Parameters and genetic trends for reproductive characteristics of a closed Angus herd Revista Colombiana de Ciencias Pecuarias angus bayesian cattle genetic trends genetic variability genetic parameters heritability pedigree reproductive traits sire |
| title | Parameters and genetic trends for reproductive characteristics of a closed Angus herd |
| title_full | Parameters and genetic trends for reproductive characteristics of a closed Angus herd |
| title_fullStr | Parameters and genetic trends for reproductive characteristics of a closed Angus herd |
| title_full_unstemmed | Parameters and genetic trends for reproductive characteristics of a closed Angus herd |
| title_short | Parameters and genetic trends for reproductive characteristics of a closed Angus herd |
| title_sort | parameters and genetic trends for reproductive characteristics of a closed angus herd |
| topic | angus bayesian cattle genetic trends genetic variability genetic parameters heritability pedigree reproductive traits sire |
| url | https://revistas.udea.edu.co/index.php/rccp/article/view/336447 |
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