Estimation of genetic parameters for dairy traits using repeatability animal models based on test-day data for Alpine goat in Croatia
The objective of this study was to estimate genetic parameters for daily milk yield (DMY), fat (FC), and protein content (PC) using 329.022 test-day records of 23.756 Alpine does. Single trait repeatability animal model was applied. Parity, litter size, season, and lactation stage (Ali-Schaeffer’s c...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Croatian Dairy Union
2019-01-01
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| Series: | Mljekarstvo |
| Subjects: | |
| Online Access: | https://hrcak.srce.hr/file/329173 |
| _version_ | 1797207335730413568 |
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| author | Marija Špehar Danijel Mulc Zdravko Barać Boro Mioč Ante Kasap |
| author_facet | Marija Špehar Danijel Mulc Zdravko Barać Boro Mioč Ante Kasap |
| author_sort | Marija Špehar |
| collection | DOAJ |
| description | The objective of this study was to estimate genetic parameters for daily milk yield (DMY), fat (FC), and protein content (PC) using 329.022 test-day records of 23.756 Alpine does. Single trait repeatability animal model was applied. Parity, litter size, season, and lactation stage (Ali-Schaeffer’s curve) were fitted in the fixed, while herd, herd-test-day, permanent environment (within lactations) and additive genetic effect in the random part of the model. Variance components were estimated using Residual Maximum Likelihood Method in the VCE-6 program. Additive genetic effect explained 23 %, 16 % and 25 % of DMY, FC and PC variability which is in general agreement with numerous previous reports for dairy goat breeds. Among the non-genetic effects, herd explained 24 %, 12 %, and 9 %, herd-test-day 17 %, 29 %, and 30 %, and permanent environment 16 %, 3 %, and 5 % of DMY, FC and PC variability, respectively. The estimated parameters and developed single trait repeatability test-day models will serve as a basic tool in BLUP based genetic evaluation of Alpine breed in Croatia. |
| first_indexed | 2024-04-24T09:21:17Z |
| format | Article |
| id | doaj.art-4fdecbfa07ad4a5ea8dc70b415eb2187 |
| institution | Directory Open Access Journal |
| issn | 0026-704X 1846-4025 |
| language | English |
| last_indexed | 2024-04-24T09:21:17Z |
| publishDate | 2019-01-01 |
| publisher | Croatian Dairy Union |
| record_format | Article |
| series | Mljekarstvo |
| spelling | doaj.art-4fdecbfa07ad4a5ea8dc70b415eb21872024-04-15T15:45:53ZengCroatian Dairy UnionMljekarstvo0026-704X1846-40252019-01-0169421522110.15567/mljekarstvo.2019.0401Estimation of genetic parameters for dairy traits using repeatability animal models based on test-day data for Alpine goat in CroatiaMarija Špehar0Danijel Mulc1Zdravko Barać2Boro Mioč3Ante Kasap4Croatian Agricultural Agency, Ilica 101, 10000 Zagreb, CroatiaCroatian Agricultural Agency, Ilica 101, 10000 Zagreb, CroatiaCroatian Agricultural Agency, Ilica 101, 10000 Zagreb, CroatiaUniversity of Zagreb, Faculty of Agriculture, Department of Animal Science and Technology, Svetošimunska 25, 10000 Zagreb, CroatiaUniversity of Zagreb, Faculty of Agriculture, Department of Animal Science and Technology, Svetošimunska 25, 10000 Zagreb, CroatiaThe objective of this study was to estimate genetic parameters for daily milk yield (DMY), fat (FC), and protein content (PC) using 329.022 test-day records of 23.756 Alpine does. Single trait repeatability animal model was applied. Parity, litter size, season, and lactation stage (Ali-Schaeffer’s curve) were fitted in the fixed, while herd, herd-test-day, permanent environment (within lactations) and additive genetic effect in the random part of the model. Variance components were estimated using Residual Maximum Likelihood Method in the VCE-6 program. Additive genetic effect explained 23 %, 16 % and 25 % of DMY, FC and PC variability which is in general agreement with numerous previous reports for dairy goat breeds. Among the non-genetic effects, herd explained 24 %, 12 %, and 9 %, herd-test-day 17 %, 29 %, and 30 %, and permanent environment 16 %, 3 %, and 5 % of DMY, FC and PC variability, respectively. The estimated parameters and developed single trait repeatability test-day models will serve as a basic tool in BLUP based genetic evaluation of Alpine breed in Croatia.https://hrcak.srce.hr/file/329173Alpine breeddairy traitsgenetic parameterstest-day model |
| spellingShingle | Marija Špehar Danijel Mulc Zdravko Barać Boro Mioč Ante Kasap Estimation of genetic parameters for dairy traits using repeatability animal models based on test-day data for Alpine goat in Croatia Mljekarstvo Alpine breed dairy traits genetic parameters test-day model |
| title | Estimation of genetic parameters for dairy traits using repeatability animal models based on test-day data for Alpine goat in Croatia |
| title_full | Estimation of genetic parameters for dairy traits using repeatability animal models based on test-day data for Alpine goat in Croatia |
| title_fullStr | Estimation of genetic parameters for dairy traits using repeatability animal models based on test-day data for Alpine goat in Croatia |
| title_full_unstemmed | Estimation of genetic parameters for dairy traits using repeatability animal models based on test-day data for Alpine goat in Croatia |
| title_short | Estimation of genetic parameters for dairy traits using repeatability animal models based on test-day data for Alpine goat in Croatia |
| title_sort | estimation of genetic parameters for dairy traits using repeatability animal models based on test day data for alpine goat in croatia |
| topic | Alpine breed dairy traits genetic parameters test-day model |
| url | https://hrcak.srce.hr/file/329173 |
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