摘要
柞蚕杂种F1代的食下量、蚕粪量、消化量均存在明显的杂种优势,而消化率几乎不存在杂种优势。柞蚕的茧重转换效率在17%～20%之间,茧层生产效率约2%,F1代表现明显的负向杂种优势。表明F1代全茧量、茧层量的提高是靠食下量的增加而实现的。结果同时表明,F1代雌雄间饲料效率各项因素的杂种优势率均为雄蚕大于雌蚕。
The heterosis existed obviously in amount of leaf ingested,amount of silkworm faeces and amount of digested of F 1 generation,but the hybrid vigour rate of percentage of leaf digested was extremely low.The leafcocoon ratio was about 17%～20%,and leafsilk ratio was about 2% the weight of fresh leaves ingested,while the hybrid vigour rate of F 1 generation were negative.This shows that cocoon weight and cocoon shell weight of F 1 generation were increased by means of the increase of amount of leaf ingested.The results also show that the F 1 hybrid vigour rate of all dietary efficiency factors between ♀ and were >♀.
出处
《广西农业生物科学》
CSCD
2000年第1期34-37,共4页
Journal of Guangxi Agricultural and Biological Science
关键词
柞蚕
饲料效率
杂种优势
Antheraea pernyi
dietary efficiency
heterosis
