扬州大学学报（农业与生命科学版）2017，Vol.38Issue(1)：52-56,61,6.DOI:10.16872/j.cnki.1671-4652.2017.01.011
泥鳅自然繁殖特性及人工繁育技术研究
The natural reproductive characteristics and artificial propagation technologies of the loach, Misgurnus anguillicaudatus
摘要
Abstract
The objective of this study was to find the natural propagation characteristics of the loach (Misgurnus an guillicaudatus) and designed to carry out the artificial propagation,in Shaobo lake of Lixiahe region,Jiangsu province.Results showed that the gonadosomatic index of female loach gradually increased in months from March to May,peaked at June and then gradually decline,and the loach can be bred in April to September,the best period of May to June.The female loach with bigger specifications had higher fecundity,the average absolute fecundity was greater than 10 000 grain · tail-1 and average relative fecundity was greater than 400 grain · g-1 when the body weight of the loach was higher than 30 g · tail-1.At the water temperature from 21.5 to 25.5 ℃,the broodstock of the loach kept female and male in 1 ∶ (1.2-1.5) ratios,and started laying eggs after oxytocin injection agent for 12 to 15 hour,the tail dose of oxytocic for female loach was 125 U HCG+0.3 μg LRH-A2+0.2 mg DOM,half of the dose for the male loach.The av erage fertility rate was 85.54％ eggs,hatching rate was 64.86％,about 320 000 tail of loach seedlings were hatched by 122 tail female loach.The newly hatched larva body length was about 2 mm,and at 30 to 45 days of age,loach seedling length reached 3 to 5 cm,and then can be used for separate fish farming or seed sales.Our study provides the breakthrough in artificial propagation by studying the natural propagation of the loach and the foundation for large-scale artificial breeding loach in the production.关键词
泥鳅/自然繁殖特性/怀卵量/催产剂/人工繁育Key words
Misgurnus arguillicaudatus/natural propagation characteristics/fecundity/oxytocic/artificial propagation分类
农业科技引用本文复制引用
张家宏,韩光明,毕建花,王桂良,唐鹤军,寇祥明,王守红,徐荣,朱凌宇..泥鳅自然繁殖特性及人工繁育技术研究[J].扬州大学学报（农业与生命科学版）,2017,38(1):52-56,61,6.基金项目
江苏省高效渔业设施项目(2015-295) （2015-295）
江苏里下河地区农业科学研究所科研项目(2015-2016) （2015-2016）
