Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/45130
標題: Effects of the Chicken Sex-linked Dwarf Gene on Growth and Muscle Development
作者: Chen, C.F.
陳志峰
Chen, Y.H.
Tixier-Boichard, M.
Cheng, P.Y.
Chang, C.S.
Tang, P.C.
Lee, Y.P.
唐品琦
關鍵字: Growth Curve
Muscle Development
Sex-linked Dwarf Gene
Chicken
selection
curve
fowl
期刊/報告no:: Asian-Australasian Journal of Animal Sciences, Volume 22, Issue 7, Page(s) 937-942.
摘要: The aim of this study was to analyze the effects on growth and muscle development during the growing period of the sex-linked dwarf gene in the background of a Taiwan Country chicken strain, L2, selected for egg production. Eight crossbred males, heterozygous for the DW*DW mutation, were each backcrossed to six females of the L2 strain to produce two genotypes of BC females, either normal (DW*N(+)/-) or dwarf (DW*DW/-). The experiment included 251 normal and 207 dwarf pullets. The effect of the dwarf gene on body weight and shank length was highly significant from 2 weeks of age. The reduction of body weight by the dwarf gene reached 34.8% and 37.4% as compared to normal sibs at 16 and 20 weeks of age, respectively. Parameters of the growth curve were estimated: the age at inflection (TI) was higher in normal pullets (66.9 days) than in dwarf pullets (61.2 days). A significant effect of the dwarf gene on single muscle fiber cross-section area was found from 12 weeks of age onwards, whereas the dwarf gene had no effect on the total number of muscle fibers. Comparing the effect of the dwarf gene on shank length at different ages revealed an earlier effect on skeleton growth, observed from 2 weeks of age, than on muscle development, which was affected from 8 to 12 weeks of age.
URI: http://hdl.handle.net/11455/45130
ISSN: 1011-2367
Appears in Collections:動物科學系

文件中的檔案:

取得全文請前往華藝線上圖書館



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.