- همه نشریات
- نشریات علمی سازمان تحقیقات، آموزش و ترویچ کشاورزی
- مجلات ترویجی سازمان تحقیقات، آموزش و ترویج کشاورزی
- سایر نشریات سازمان تحقیقات، آموزش و ترویج کشاورزی
- نشریات علمی انجمن ها
- علوم آب و خاک
- علوم اقتصاد و ترویج کشاورزی
- علوم جنگل, مرتع و آبخیزداری
- علوم دامی و شیلات
- علوم زراعی و باغی
- علوم گیاهپزشکی
- علوم مهندسی و مکانیزاسیون کشاورزی
- نشریات با زبان انگلیسی
- نشریات با زبان فارسی
- نشریات دانشگاه آزاد اسلامی
- نشریات علمی
آمار
| تعداد نشریات | 280 |
| تعداد نشریات سازمان | 79 |
| تعداد شماره‌ها | 2,346 |
| تعداد مقالات | 27,162 |
| تعداد مشاهده مقاله | 14,951,655 |
| تعداد دریافت فایل اصل مقاله | 11,945,255 |
Evaluation of breeding values and variance components of birth and weaning weights in the Holstein cows herd based on genetic information | ||
| Archives of Razi Institute | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 19 خرداد 1401 | ||
| نوع مقاله: Original Articles | ||
| شناسه دیجیتال (DOI): 10.22092/ari.2022.357808.2105 | ||
| نویسندگان | ||
Riyadh Hamad Senkal  ؛ Al-Jubori O. S؛ H.K Al-Waith
| ||
| Department of Animal Production, College of Agricultural Engineering Sciences, University of Baghdad, Iraq | ||
| چکیده | ||
| Birth weights, weaning and daily weight gain of calves before weaning vary according to the environment, production and breeding systems of farm animals. It is expected that these traits will be affected by direct genetic influences and the genetic effects of the mother. Therefore, this study was designed and conducted on 50 Holstein cows herds to estimate breeding value (after estimating the mean of allele effect and the mean of allele replacement effect of DRB3 gene), as well as the variance components of the birth and weaning weight traits, depending on the variance resulting from the inherited polymorphism of the DBR3 gene. The results of this study showed a preference for the wild allele A on the basis of its mutant counterpart B was the mean allele-effect value and the mean allele substitution value, corresponding to the preference for the A allele in both traits, the individuals with the AA genotype outperformed the homozygotes and mutants in the educational value (a value that is estimated on the basis of what the individuals carry from the genotypes). The genetic variance of weaning weight was higher than the genetic variance of birth weight, and this may be due to preference of allele A and the AA structure over the other two components in positively affecting birth and weaning weights, indicating the importance of this genetic structure of the DBR3 gene in selection within the genetic improvement programs for the color characteristic of Holstein cows. | ||
| کلیدواژه‌ها | ||
| Breeding value؛ Variance compenent؛ Birth weight؛ weaning weight؛ Holstein Cows | ||
|
آمار تعداد مشاهده مقاله: 8 |
||
