An evaluation of a long-term breeding programme in a closed Sahiwal herd in Kenya. II. Genetic and phenotypic trends and levels of inbreeding
Analyses trends in genetic and environemntal components of performance, to estimate levels of inbreeding and to quantify its effects on performance in order to identify which of these factors is responsible for the decline in performance at the Stud. Presents an evaluation of long-term breeding prog...
| Autores principales: | , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
1992
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/28846 |
| _version_ | 1855516344160616448 |
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| author | Rege, J.E.O. Wakhungu, Judi W. |
| author_browse | Rege, J.E.O. Wakhungu, Judi W. |
| author_facet | Rege, J.E.O. Wakhungu, Judi W. |
| author_sort | Rege, J.E.O. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Analyses trends in genetic and environemntal components of performance, to estimate levels of inbreeding and to quantify its effects on performance in order to identify which of these factors is responsible for the decline in performance at the Stud. Presents an evaluation of long-term breeding programme in a closed sahiwal herd in Kenya. Presents data on the analysis of trends in calving interval, on phenotypic, genetic and environmental trends in calving interval, birth weight, age at first calving, milk yield and liveweight. Presents records of Sahiwal cows kept at Kenya's National Sahiwal Stud (NSS) covering the period 1963 through 1988, to estimate genetic and environmental trends in production and reproductive traits, and to estimate levels and effects of inbreeding. Annual genetic, environmental and phenotypic changes in milk yield were 4.2, - 16.9 and - 12.7 kg, respectively. |
| format | Journal Article |
| id | CGSpace28846 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1992 |
| publishDateRange | 1992 |
| publishDateSort | 1992 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace288462023-07-03T14:51:19Z An evaluation of a long-term breeding programme in a closed Sahiwal herd in Kenya. II. Genetic and phenotypic trends and levels of inbreeding Rege, J.E.O. Wakhungu, Judi W. animal breeding breeding systems sahiwal cattle genetic factors phenotypes calving interval milk yield birth weight age at first calving animal performance Analyses trends in genetic and environemntal components of performance, to estimate levels of inbreeding and to quantify its effects on performance in order to identify which of these factors is responsible for the decline in performance at the Stud. Presents an evaluation of long-term breeding programme in a closed sahiwal herd in Kenya. Presents data on the analysis of trends in calving interval, on phenotypic, genetic and environmental trends in calving interval, birth weight, age at first calving, milk yield and liveweight. Presents records of Sahiwal cows kept at Kenya's National Sahiwal Stud (NSS) covering the period 1963 through 1988, to estimate genetic and environmental trends in production and reproductive traits, and to estimate levels and effects of inbreeding. Annual genetic, environmental and phenotypic changes in milk yield were 4.2, - 16.9 and - 12.7 kg, respectively. 1992-01-12 2013-05-06T07:01:34Z 2013-05-06T07:01:34Z Journal Article https://hdl.handle.net/10568/28846 en Limited Access Wiley Journal of Animal Breeding and Genetics;109(5): 374-384 |
| spellingShingle | animal breeding breeding systems sahiwal cattle genetic factors phenotypes calving interval milk yield birth weight age at first calving animal performance Rege, J.E.O. Wakhungu, Judi W. An evaluation of a long-term breeding programme in a closed Sahiwal herd in Kenya. II. Genetic and phenotypic trends and levels of inbreeding |
| title | An evaluation of a long-term breeding programme in a closed Sahiwal herd in Kenya. II. Genetic and phenotypic trends and levels of inbreeding |
| title_full | An evaluation of a long-term breeding programme in a closed Sahiwal herd in Kenya. II. Genetic and phenotypic trends and levels of inbreeding |
| title_fullStr | An evaluation of a long-term breeding programme in a closed Sahiwal herd in Kenya. II. Genetic and phenotypic trends and levels of inbreeding |
| title_full_unstemmed | An evaluation of a long-term breeding programme in a closed Sahiwal herd in Kenya. II. Genetic and phenotypic trends and levels of inbreeding |
| title_short | An evaluation of a long-term breeding programme in a closed Sahiwal herd in Kenya. II. Genetic and phenotypic trends and levels of inbreeding |
| title_sort | evaluation of a long term breeding programme in a closed sahiwal herd in kenya ii genetic and phenotypic trends and levels of inbreeding |
| topic | animal breeding breeding systems sahiwal cattle genetic factors phenotypes calving interval milk yield birth weight age at first calving animal performance |
| url | https://hdl.handle.net/10568/28846 |
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