دورية أكاديمية
Breeding value for type traits in beef cattle in theCzech Republic
| العنوان: | Breeding value for type traits in beef cattle in theCzech Republic |
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| المؤلفون: | Z. Veselá, J. Přibyl, P. Šafus, L. Vostrý, K. Šeba, L. Štolc |
| المصدر: | Czech Journal of Animal Science, Vol 50, Iss 9, Pp 385-393 (2005) |
| بيانات النشر: | Czech Academy of Agricultural Sciences, 2005. |
| سنة النشر: | 2005 |
| المجموعة: | LCC:Animal culture |
| مصطلحات موضوعية: | animal model, beef cattle, breeding value, genetic correlation, heritability, type traits, Animal culture, SF1-1100 |
| الوصف: | The type was evaluated in 5 424 young animals of twelve beef breeds. Ten type traits were evaluated: height at sacrum (HS), body length (BL), live weight (LW), front chest width (CW), chest depth (CD), pelvis (P), shoulder muscling (SM), back muscling (BM), rump muscling (RM) and production type (PT). The traits represent two groups: (1) traits scoring body measurements and body capacity (HS, BL, LW, CW, CD, P) and (2) traits scoring muscling (SM, BM, RM, PT). These fixed effects were included in the model: breed, sex, HYS, mother's age, linear regression on age at evaluation and average gain from birth to evaluation. Fixed effects in the model explained 40% to 60% of variability. The highest values of heritability coefficient were estimated for HS (h2 = 0.51) and LW (h2 = 0.50). BL had the lowest values of heritability coefficient (h2 = 0.25). The values h2 = 0.25-0.32 were calculated for the traits scoring body capacity (CW, CD, P). The range of values for muscling traits was h2 = 0.26-0.35. The coefficient of heritability for PT was h2 = 0.34. All traits scoring muscling and PT showed high genetic correlations (rg > 0.95). The traits scoring body capacity (P, CW, CD) were highly genetically correlated with muscling rg > 0.83. Breeding values were determined by a multi-trait animal model. Standard deviations of breeding values were higher in HS (sBV = 0.71) and LW (sBV = 0.84), which was connected with a different method of evaluation of these traits. They were in the range of 0.19 (BL) to 0.30 (RM) in the other traits. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1212-1819 1805-9309 |
| Relation: | https://cjas.agriculturejournals.cz/artkey/cjs-200509-0001_breeding-value-for-type-traits-in-beef-cattle-in-theczech-republic.php; https://doaj.org/toc/1212-1819; https://doaj.org/toc/1805-9309 |
| DOI: | 10.17221/4223-CJAS |
| URL الوصول: | https://doaj.org/article/767b7a87ef5a4618953f38648432f844 |
| رقم الأكسشن: | edsdoj.767b7a87ef5a4618953f38648432f844 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 12121819 18059309 |
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| DOI: | 10.17221/4223-CJAS |