Estimates of Genetic Parameters for Body Weight in Turkish Holstein Bulls using Random Regression Model
The objective of this study was to estimate genetic parameters for the body weights of Turkish Holstein bulls using the random regression model. The data set consists of 1475 body weight records from 395 Holstein bulls raised in the same herd. Body weight records of bulls aged between 32 and 725 day...
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Ankara University
2019-09-01
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| Series: | Journal of Agricultural Sciences |
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| Online Access: | https://dergipark.org.tr/tr/download/article-file/800123 |
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| author | Aşkın Galiç Çiğdem Takma |
| author_facet | Aşkın Galiç Çiğdem Takma |
| author_sort | Aşkın Galiç |
| collection | DOAJ |
| description | The objective of this study was to estimate genetic parameters for the body weights of Turkish Holstein bulls using the random regression model. The data set consists of 1475 body weight records from 395 Holstein bulls raised in the same herd. Body weight records of bulls aged between 32 and 725 days old were collected at approximately two-month intervals from December 2013 to October 2014. In the study body weight measurements made on the same day were accepted as a group and the bulls were grouped into 10 different groups according to their age. The additive genetic and permanent environmental effects were estimated using DFREML algorithm by third order Legendre polynomials. The additive genetic variance estimates ranged from 10.73 to 4867.07, the phenotypic variance estimates ranged from 382.84 to 5514.86 and permanent environmental variance estimates ranged from 0.33 to 63.27. The heritability values were estimated between 0.03 to 0.90. The phenotypic and additive genetic correlations between body weights were positively estimated between 0.085 to 0.89 and 0.53 to 0.94, respectively. It was concluded that use of body weight at an earlier age will give advantage in breeding studies for body weight at slaughter. |
| format | Article |
| id | doaj-art-358b8dc7f942434eb436e4e5d9bf5571 |
| institution | DOAJ |
| issn | 1300-7580 2148-9297 |
| language | English |
| publishDate | 2019-09-01 |
| publisher | Ankara University |
| record_format | Article |
| series | Journal of Agricultural Sciences |
| spelling | doaj-art-358b8dc7f942434eb436e4e5d9bf55712025-08-20T03:18:41ZengAnkara UniversityJournal of Agricultural Sciences1300-75802148-92972019-09-0125332833310.15832/ankutbd.41742245Estimates of Genetic Parameters for Body Weight in Turkish Holstein Bulls using Random Regression ModelAşkın Galiç0Çiğdem Takma1AKDENİZ ÜNİVERSİTESİEge universitesiThe objective of this study was to estimate genetic parameters for the body weights of Turkish Holstein bulls using the random regression model. The data set consists of 1475 body weight records from 395 Holstein bulls raised in the same herd. Body weight records of bulls aged between 32 and 725 days old were collected at approximately two-month intervals from December 2013 to October 2014. In the study body weight measurements made on the same day were accepted as a group and the bulls were grouped into 10 different groups according to their age. The additive genetic and permanent environmental effects were estimated using DFREML algorithm by third order Legendre polynomials. The additive genetic variance estimates ranged from 10.73 to 4867.07, the phenotypic variance estimates ranged from 382.84 to 5514.86 and permanent environmental variance estimates ranged from 0.33 to 63.27. The heritability values were estimated between 0.03 to 0.90. The phenotypic and additive genetic correlations between body weights were positively estimated between 0.085 to 0.89 and 0.53 to 0.94, respectively. It was concluded that use of body weight at an earlier age will give advantage in breeding studies for body weight at slaughter.https://dergipark.org.tr/tr/download/article-file/800123holstein; heritability; meat; random regression model |
| spellingShingle | Aşkın Galiç Çiğdem Takma Estimates of Genetic Parameters for Body Weight in Turkish Holstein Bulls using Random Regression Model Journal of Agricultural Sciences holstein; heritability; meat; random regression model |
| title | Estimates of Genetic Parameters for Body Weight in Turkish Holstein Bulls using Random Regression Model |
| title_full | Estimates of Genetic Parameters for Body Weight in Turkish Holstein Bulls using Random Regression Model |
| title_fullStr | Estimates of Genetic Parameters for Body Weight in Turkish Holstein Bulls using Random Regression Model |
| title_full_unstemmed | Estimates of Genetic Parameters for Body Weight in Turkish Holstein Bulls using Random Regression Model |
| title_short | Estimates of Genetic Parameters for Body Weight in Turkish Holstein Bulls using Random Regression Model |
| title_sort | estimates of genetic parameters for body weight in turkish holstein bulls using random regression model |
| topic | holstein; heritability; meat; random regression model |
| url | https://dergipark.org.tr/tr/download/article-file/800123 |
| work_keys_str_mv | AT askıngalic estimatesofgeneticparametersforbodyweightinturkishholsteinbullsusingrandomregressionmodel AT cigdemtakma estimatesofgeneticparametersforbodyweightinturkishholsteinbullsusingrandomregressionmodel |