Appraisal of Selection Practice and Fertility of Bull Used for Frozen Semen Production in Ethiopia
This study aimed to evaluate the selection practice and fertility of bulls recruited and used for frozen semen production. Data were collected through key informant interviews and longitudinal measurement of fertility and morphological traits of bulls. The preservice morphology and fertility data we...
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| Format: | Article |
| Language: | English |
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Wiley
2025-01-01
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| Series: | Advances in Agriculture |
| Online Access: | http://dx.doi.org/10.1155/aia/2111569 |
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| author | Zeleke Tesema Shanbel Besufkad Demelash Kassahun Belay Derbie Aschalew Abebe Tesfaye Zewdie Alemnew Araya Erdachew Yitagesu Liuelseged Alemayehu Bulla Agegnehu Solomon Gizaw |
| author_facet | Zeleke Tesema Shanbel Besufkad Demelash Kassahun Belay Derbie Aschalew Abebe Tesfaye Zewdie Alemnew Araya Erdachew Yitagesu Liuelseged Alemayehu Bulla Agegnehu Solomon Gizaw |
| author_sort | Zeleke Tesema |
| collection | DOAJ |
| description | This study aimed to evaluate the selection practice and fertility of bulls recruited and used for frozen semen production. Data were collected through key informant interviews and longitudinal measurement of fertility and morphological traits of bulls. The preservice morphology and fertility data were collected from 2011 to 2022 from 193 candidate bulls. About 908 records of 68 bulls were used to evaluate the semen quality of bulls used for frozen semen production. The result of this study revealed that private small-scale dairy farms (71.7%), along with research centers (18.87%), constituted the major source of improved bulls utilized for semen production. Bulls were not selected based on their estimated breeding value, but rather based on the milk yield performance of their dam, conformation, growth, and health status. Bulls were extensively utilized for long periods, up to six years, without knowing their genetic superiority. Bulls selected for semen production had good semen volume, concentration, mass motility, individual motility, and live cells, which were higher than the minimum standard. The results of this study indicated that bull selection for frozen semen production was as per the predefined bull selection standard in terms of fertility and morphological traits. However, further progeny and pedigree tracing must be carried out on selected superior bulls. The absence of selection for genetically superior bulls based on estimated breeding value, an extended service length, overutilization of few bulls, and absence of a recording system may cause inbreeding and adversely affect the productivity, fitness of crossbred animals, and sustainability of dairy cattle production. |
| format | Article |
| id | doaj-art-0b93a73d0b8c410b8b8d2912d75c48f7 |
| institution | OA Journals |
| issn | 2314-7539 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Agriculture |
| spelling | doaj-art-0b93a73d0b8c410b8b8d2912d75c48f72025-08-20T02:17:32ZengWileyAdvances in Agriculture2314-75392025-01-01202510.1155/aia/2111569Appraisal of Selection Practice and Fertility of Bull Used for Frozen Semen Production in EthiopiaZeleke Tesema0Shanbel Besufkad1Demelash Kassahun2Belay Derbie3Aschalew Abebe4Tesfaye Zewdie5Alemnew Araya6Erdachew Yitagesu7Liuelseged Alemayehu8Bulla Agegnehu9Solomon Gizaw10Debre Birhan Agricultural Research CenterDebre Birhan Agricultural Research CenterAndassa Livestock Research CenterSirinka Agricultural Research CenterDebre Birhan Agricultural Research CenterDebre Birhan Agricultural Research CenterDebre Birhan Agricultural Research CenterDebre Birhan Agricultural Research CenterDebre Birhan Agricultural Research CenterLivestock Development InstituteInternational Livestock Research Institute (ILRI)This study aimed to evaluate the selection practice and fertility of bulls recruited and used for frozen semen production. Data were collected through key informant interviews and longitudinal measurement of fertility and morphological traits of bulls. The preservice morphology and fertility data were collected from 2011 to 2022 from 193 candidate bulls. About 908 records of 68 bulls were used to evaluate the semen quality of bulls used for frozen semen production. The result of this study revealed that private small-scale dairy farms (71.7%), along with research centers (18.87%), constituted the major source of improved bulls utilized for semen production. Bulls were not selected based on their estimated breeding value, but rather based on the milk yield performance of their dam, conformation, growth, and health status. Bulls were extensively utilized for long periods, up to six years, without knowing their genetic superiority. Bulls selected for semen production had good semen volume, concentration, mass motility, individual motility, and live cells, which were higher than the minimum standard. The results of this study indicated that bull selection for frozen semen production was as per the predefined bull selection standard in terms of fertility and morphological traits. However, further progeny and pedigree tracing must be carried out on selected superior bulls. The absence of selection for genetically superior bulls based on estimated breeding value, an extended service length, overutilization of few bulls, and absence of a recording system may cause inbreeding and adversely affect the productivity, fitness of crossbred animals, and sustainability of dairy cattle production.http://dx.doi.org/10.1155/aia/2111569 |
| spellingShingle | Zeleke Tesema Shanbel Besufkad Demelash Kassahun Belay Derbie Aschalew Abebe Tesfaye Zewdie Alemnew Araya Erdachew Yitagesu Liuelseged Alemayehu Bulla Agegnehu Solomon Gizaw Appraisal of Selection Practice and Fertility of Bull Used for Frozen Semen Production in Ethiopia Advances in Agriculture |
| title | Appraisal of Selection Practice and Fertility of Bull Used for Frozen Semen Production in Ethiopia |
| title_full | Appraisal of Selection Practice and Fertility of Bull Used for Frozen Semen Production in Ethiopia |
| title_fullStr | Appraisal of Selection Practice and Fertility of Bull Used for Frozen Semen Production in Ethiopia |
| title_full_unstemmed | Appraisal of Selection Practice and Fertility of Bull Used for Frozen Semen Production in Ethiopia |
| title_short | Appraisal of Selection Practice and Fertility of Bull Used for Frozen Semen Production in Ethiopia |
| title_sort | appraisal of selection practice and fertility of bull used for frozen semen production in ethiopia |
| url | http://dx.doi.org/10.1155/aia/2111569 |
| work_keys_str_mv | AT zeleketesema appraisalofselectionpracticeandfertilityofbullusedforfrozensemenproductioninethiopia AT shanbelbesufkad appraisalofselectionpracticeandfertilityofbullusedforfrozensemenproductioninethiopia AT demelashkassahun appraisalofselectionpracticeandfertilityofbullusedforfrozensemenproductioninethiopia AT belayderbie appraisalofselectionpracticeandfertilityofbullusedforfrozensemenproductioninethiopia AT aschalewabebe appraisalofselectionpracticeandfertilityofbullusedforfrozensemenproductioninethiopia AT tesfayezewdie appraisalofselectionpracticeandfertilityofbullusedforfrozensemenproductioninethiopia AT alemnewaraya appraisalofselectionpracticeandfertilityofbullusedforfrozensemenproductioninethiopia AT erdachewyitagesu appraisalofselectionpracticeandfertilityofbullusedforfrozensemenproductioninethiopia AT liuelsegedalemayehu appraisalofselectionpracticeandfertilityofbullusedforfrozensemenproductioninethiopia AT bullaagegnehu appraisalofselectionpracticeandfertilityofbullusedforfrozensemenproductioninethiopia AT solomongizaw appraisalofselectionpracticeandfertilityofbullusedforfrozensemenproductioninethiopia |