搜索结果: 1-3 共查到“家畜育种学 long term selection”相关记录3条 . 查询时间(0.065 秒)
Long Term Selection for Small Body Weight in Japanese Quail I:Direct Selection Response from 60 to 65th Generations
selection limit body weight small size heritability Japanese quail
2009/7/31
It is important to know the limit of artificial selection for efficient animal production. The aim of this research was to examine whether the selection for small body weight in Japanese quail has rea...
Long Term Selection for Small Body Weight in Japanese Quail II:Changes in Reproductive Traits from 60 to 65th Generations
reproductive traits long term selection small body weight genetic fitness Japanese quail
2009/7/31
Establishment of small body size poultry is an important strategy, which leads to effective management of bird-colonies and less feed consumption. And also it would be a useful experimental tool for ...
Comparison of long-term selection responses of breeding policy in dairy herds
dairy cattle breeding policy selection genetic contribution economic contribution gene flow Metod
2005/6/1
Genetic and economic responses to genetic gain were evaluated for these breeding arrangements: single use of bulls under testing; single and repeated use of proved bulls for two years and for three ye...