Estimates of Genetic Parameters for Body Weight in Turkish Holstein Bulls using Random Regression Model

Aşkın GALİÇ; Çiğdem TAKMA

doi:https://doi.org/10.15832/ankutbd.417422

Makale detayları

Estimates of Genetic Parameters for Body Weight in Turkish Holstein Bulls using Random Regression Model

Yazarlar:

Aşkın GALİÇ | Çiğdem TAKMA

Yayıncı:

Ankara University

Dergi:

Journal of Agricultural Sciences 2019 Vol.25 Issue 3, pp.328-333

Belge Tipi:

Makale

Yayın Tarihi:

9/2019

Belge Dili:

İngilizce

Document ID (Org No.):

2000607313

Sıklık:

Üç Aylık

eISSN:

2148-9297

DOI:

https://doi.org/10.15832/ankutbd.417422

Özet:

 


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.


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Makale detayları

Estimates of Genetic Parameters for Body Weight in Turkish Holstein Bulls using Random Regression Model

Yazarlar: Aşkın GALİÇ | Çiğdem TAKMA

Yayıncı: Ankara University

Dergi: Journal of Agricultural Sciences 2019 Vol.25 Issue 3, pp.328-333

Belge Tipi: Makale

Yayın Tarihi: 9/2019

Belge Dili: İngilizce

Document ID (Org No.): 2000607313

Sıklık: Üç Aylık

eISSN: 2148-9297

DOI: https://doi.org/10.15832/ankutbd.417422

Sayı

Yazarlar:

Aşkın GALİÇ | Çiğdem TAKMA

Yayıncı:

Ankara University

Dergi:

Journal of Agricultural Sciences 2019 Vol.25 Issue 3, pp.328-333

Belge Tipi:

Makale

Yayın Tarihi:

9/2019

Belge Dili:

İngilizce

Document ID (Org No.):

2000607313

Sıklık:

Üç Aylık

eISSN:

2148-9297

DOI:

https://doi.org/10.15832/ankutbd.417422