摘要
中华绒螯蟹(Eriocheir sinensis)“长荡湖1号”A系(雌体大于200 g)和B系(雌体大于250 g)的选育工作已进行到子一代(G1代),前期研究表明,G1代在扣蟹阶段的生长性能及养殖效果表现出一定的优势,但成蟹的养殖性能尚不清楚。文章系统比较了“长荡湖1号”2个选育品系(A系和B系)与未选育群体在成蟹养殖阶段的生长性能、成活率和产量等指标。结果显示:1)在养殖中后期(9—11月),选育组平均体质量略高于对照组,其中B系雌体显著高于对照组(P<0.05);此外,B系在5—7月的增重率和特定生长率均显著高于A系(P<0.05);2)A系和B系雄体生殖蜕壳率和性腺指数均略低于对照组;B系肝胰腺指数在10月20日显著低于另外2组,而11月15日又显著高于另外2组(P<0.05);3)两选育品系雌雄体大规格成蟹(雄蟹≥195 g,雌蟹≥120 g)比例均高于对照组,其中B系G1代雄蟹(195~219.9 g)显著大于对照组(P<0.05);此外,在最终平均体质量、成活率、产量及饵料系数等方面,两选育品系均优于对照组。综上,A系在成活率、产量和饲料系数等方面具有优势,B系具有大规格蟹比例高、最终平均体质量大的特点。
The first generation(G1) of Chinese mitten crab(Eriocheir sinensis) named "Changdang Lake 1" Strain A(body mass of female parent is more than 200 g) and B(body mass of female parent is more than 250 g) have been obtained. In previous study, G1 showed better growth and culture performance in juvenile crab culture stage, but the performance of adult crab culture is still unclear.Therefore, the difference of growth, survival rate, yield, average mass and size distribution were systematically compared among Strain A, Strain B and unselected groups. The results show that: 1) In middle and later stages of culture(September-November), the average body mass of two breeding groups was slightly higher than that of the control group, and that of Strain B female was significantly higher than that of the control group(P<0.05). In addition, the weight gain rate and specific growth rate(SGR) of Strain B were significantly higher than those of Strain A from May to July(P<0.05). 2) The puberty molting rate and hepatosomatic index of male in the two selected groups were slightly lower than those in the control group. The hepatopancreatic index of Strain B was significantly lower and higher than those of the other two groups on October 20 and November 15, respecitively. 3) The proportion of large-sized crabs(male≥195 g, female≥120 g) in male and female of two breeding groups was higher than that of the control group,among which only G1 male of Strain B(195-219.9 g) was significantly higher than that of the control group(P<0.05). Besides, the final average body mass, survival rate, yield and feed conversion rate of the two selected strains were higher than those of the control group. Above all, "Changdang Lake 1" strain A is characterized by high survival rate, yield and feed conversion rate, while Strain B is characterized by high proportion in large-size and great final average body mass.
作者
庄振俊
张冬冬
姜晓东
陈文彬
陈晓武
成永旭
吴旭干
ZHUANG Zhenjun;ZHANG Dongdong;JIANG Xiaodong;CHEN Wenbin;CHEN Xiaowu;CHENG Yongxu;WU Xugan(Shanghai Ocean University/Key Laboratory of Freshwater Germplasm Resources,Ministry of Agriculture and Rural Affairs/Shanghai Collaborative Innovation Center for Aquatic Animal Genetics and Breeding/National Demonstration Centre for Experimental Fisheries Science Education,Shanghai 201306,China;Changzhou Jintan District Fisheries Technical Extension Station,Changzhou 213200,China)
出处
《南方水产科学》
CAS
CSCD
北大核心
2021年第3期27-35,共9页
South China Fisheries Science
基金
国家重点研发计划“蓝色粮仓科技创新”专项(2018YFD0900103)
常州市科技支撑计划(CE20182003)
江苏金坛区农业农村局科技项目(JTNL2019001)。
关键词
中华绒螯蟹
“长荡湖1号”
成蟹阶段
养殖性能
Eriocheir sinensis
"Changdang Lake 1"
Adult culture stage
Culture performance
