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تجزیه و تحلیل چند صفتی وزن بدن در جمعیت آمیخته بلدرچین ژاپنی با استفاده از روش آماری بیزی | ||
| علوم دامی | ||
| مقاله 10، دوره 31، شماره 121، اسفند 1397، صفحه 117-130 اصل مقاله (1.86 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/asj.2018.120148.1610 | ||
| نویسندگان | ||
| هادی فرجی آروق1؛ خدیجه ابراهیمی2؛ غلامرضا داشاب* 3؛ محمد رکوعی4 | ||
| 1استادیار ژنتیک و اصلاح دام، پژوهشکده دام‌های خاص، دانشگاه زابل | ||
| 2دانشجوی کارشناسی ارشد اصلاح نژاد دام، گروه علوم دامی، دانشکده کشاورزی، دانشگاه زابل. | ||
| 3دانشیار ژنتیک و اصلاح دام، گروه علوم دامی، دانشکده کشاورزی، دانشگاه زابل | ||
| 4دانشیار اصلاح نژاد دام، گروه علوم دامی و بیوانفورماتیک، دانشکده کشاورزی، دانشگاه زابل | ||
| چکیده | ||
| وزن بدن یکی از صفات مهم اقتصادی در برنامه‌های اصلاح نژادی پرندگان گوشتی است. پارامترهای ژنتیکی هر جمعیت متأثر از شرایط محیطی مختلف می‌باشد. لذا لازمه هر فعالیت اصلاح نژادی در طیور برآورد این پارامترهاست. هدف این پژوهش برآورد مؤلفه‌های (کو)واریانس و فراسنجه‌های ژنتیکی صفات وزن بدن از هچ تا 45 روزگی جمعیت آمیخته بلدرچین ژاپنی با استفاده از 1794 رکورد وزن بدن حاصل از 70 پرنده نر و 72 پرنده ماده بود. برآورد فراسنجه‌های ژنتیکی و غیرژنتیکی با استفاده از مدل چندصفتی در برگیرنده اثرات ژنتیکی افزایشی، ژنتیکی غیرافزایشی و اثرات مادری و تکنیک نمونه‌گیری گیبس انجام شد. وراثت‌پذیری به دست آمده برای صفات وزن بدن در روز هچ، 5، 10، 15، 20، 25، 30، 35، 40 و 45 روزگی به ترتیب 16/0، 11/0، 12/0، 14/0، 15/0، 18/0، 20/0، 19/0، 17/0 و 17/0 بود. وراثت‌پذیری مادری، نسبت واریانس محیط دائمی مادری به واریانس فنوتیپی، نسبت واریانس غالبیت و اپیستازی به واریانس فنوتیپی به ترتیب در دامنه 32/0- 39/0، 23/0- 36/0، 04/0- 10/0 و 03/0 - 13/0 برآورد شدند. بیشترین مقدار همبستگی ژنتیکی بین وزن 35 و 30 روزگی (94/0) و کمترین مقدار آن بین وزن هچ و 5 روزگی (16/0) بود. نتایج نشان داد که اثرات مادری و ژنتیکی غیرافزایشی جهت برآورد دقیق‌تر پارامترهای ژنتیکی باید در مدل منظور شوند و همچنین، انتخاب بلدرچین‌ها برای وزن بدن 25 روزگی به دلیل همبستگی بالای آن با 45 روزگی و وراثت‌پذیری بالای آن می‌تواند باعث پیشرفت ژنتیکی خوب در وزن بدن 45 روزگی شود. | ||
| کلیدواژه‌ها | ||
| سویه وحشی؛ همبستگی ژنتیکی؛ غالبیت؛ اپیستازی؛ ژنتیک مادری | ||
| عنوان مقاله [English] | ||
| Multi- trait analysis of body weight in the crossbred population of Japanese quail using statistical Bayesian method | ||
| نویسندگان [English] | ||
| h. Faraji1؛ Khadijeh Ebrahimi2؛ Gholam Reza Dashab3؛ Mohammad Rokouei4 | ||
| 2MSc student of animal breeding, Department of Animal Science, Agriculture Faculty, University of Zabol, Zabol, Iran | ||
| 3Assistant professor of animal science | ||
| 4Department of Animal Science, Faculty of Agriculture, University of Zabol, Zabol, IRAN | ||
| چکیده [English] | ||
| Body weight is one of the important economic traits in the breeding program of broiler species. The genetic parameters of each population are affected by different environmental conditions. Therefore, each breeding activity in a poultry is required to estimate these parameters. The aim of this study was to estimate the genetic parameters of body weight from hatch to 45 days old of the crossbred population of Japanese quail by using of 1794 records of body weight from 70 males and 72 females. Estimation of genetic and non-genetic parameters was performed using a multi-trait model including additive, non-additive and maternal effects via Gibbs sampling. Estimated heritability for body weight in hatch, 5, 10, 15, 20, 25, 30, 35, 40, and 45 days’ was 0.16, 0.11, 0.12, 0.14, 0.15, 0.18, 0.20, 0.19, 0.17 and 0.17, respectively. The range of heritability for maternal genetic, the ratio of maternal permanent environmental, dominance, and epistasis variance to phenotypic variance varied between 0.32-0.39, 0.23-0.36, 0.04-0.10, and 0.03-0.13, respectively. The highest value for genetic correlation was estimated between body weight in 35 and 30 days (0.94) and the lowest value was between hatching weight and 5 days (0.16). The results showed that the maternal and non-additive effects must be fit into the model for accurate estimation of genetic parameters, and the selection of quail for body weight of 25 days due to its high correlation with 45 days and its high heritability could result in a good genetic improvement in the body weight of 45 days. | ||
| کلیدواژه‌ها [English] | ||
| Wild strain, Genetic correlation, Dominance, epistasis, Maternal genetic | ||
| مراجع | ||
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