• 中文核心期刊
  • CSCD来源期刊
  • 中国科技核心期刊
  • CA、CABI、ZR收录期刊

Message Board

Respected readers, authors and reviewers, you can add comments to this page on any questions about the contribution, review,        editing and publication of this journal. We will give you an answer as soon as possible. Thank you for your support!

Name
E-mail
Phone
Title
Content
Verification Code
Volume 10 Issue 1
Apr.  2012
Turn off MathJax
Article Contents
Chen Hui, Tan Junzhi. Effect of lnbreeding and Crassing on Laying Performance ot Egg-ducks[J]. Fujian Journal of Agricultural Sciences, 1995, 10(1): 13-16.
Citation: Chen Hui, Tan Junzhi. Effect of lnbreeding and Crassing on Laying Performance ot Egg-ducks[J]. Fujian Journal of Agricultural Sciences, 1995, 10(1): 13-16.

Effect of lnbreeding and Crassing on Laying Performance ot Egg-ducks

  • Received Date: 1994-04-30
  • Publish Date: 1995-03-15
  • In this research,the inbred lines of different inbreeding levels were established by usingthe source of Putian Black Duck. The egg-laying performance by duck at the age of 300 days wasdetermined and the result showed that 12.5% inbreeding levels had less influence on economiccharacters.When the inbreeding levels increased by 10% each time,the average depression rates ofthe three kinds of characters,i.e. the initial laying age,egg number and egg weight at 300 day agewere 18.3%, 14.2% and 2.0% respectively. In this experiment,when the inbreeding level was21.9%, the characters showed serious inbreeding depression. The selected inbred line with excel-lent performance was crossed with generation-selecting line W and M and the progeny F1 showedgood hybrid superiority. The rates of above-mentioned superiority of the three kinds of characterswere-6.83%,15.26% and 4.75% respectively and the crossing effects of W line was better thanthat of M line. The crossing effects produced by top cross and bottom cross were different. Thesuperiority rates of the egg number at 300 day age were 3.84% and 17.49% respectively. The ef-fect of bottom cross was better than that of top cross. The feasibility of applying the inbred line tobreeding combination was approached in this paper.
  • loading
  • [1]
    吴仲贤等. 动物遗传学1980. 农业出版社. 北京
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (2587) PDF downloads(442) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return