不同饵料配比对克氏原螯虾生长及抱卵的影响初探  

Primary Study on Effect of Different Forage Prescription in Red Swamp Crawfish Growing and Laying Eggs

作　　者：张家宏 寇祥明 王守红 毕建花[2] 唐鹤军[2] 金银根[3] 

机构地区：[1]江苏省生态农业工程技术研究中心,江苏扬州225007 [2]江苏里下河地区农业科学研究所,江苏扬州225007 [3]扬州大学生命科学与技术学院,江苏扬州225001

出　　处：《饲料博览（技术版）》2008年第5期1-4,共4页Feed Review

基　　金：江苏省三项工程项目(ZB2007-1-5);江苏省农业科学院高效农业示范项目(GX(07)711);扬州市科技项目(YZ2007038)共同资助

摘　　要：研究了不同饵料配比条件下克氏原螯虾生长和抱卵的情况。结果表明,不同饵料配比对克氏原螯虾生长和抱卵有明显的影响。适当增饲水草、蚕蛹和小杂鱼饵料的克氏原螯虾生长较快,其中适当增饲水草的克氏原螯虾,无论雄虾还是雌虾,在44d中生长速度均表现最快,分别达36.23%和27.17%。在投饵和水环境完全一致的条件下,雄虾的成活率和生长速度均低于雌虾。雌虾的成活率是雄虾的1.12倍,这与自然界中克氏原螯虾雌雄比例为1.13:1、雌性明显多于雄性的事实基本吻合。雌虾的生长速度是雄虾的1.09倍,即雌性个体增重比雄性略快。均衡的植物性和动物性营养配置,有利于雌虾的抱卵,抱卵率可达75%,适当增饲牛粪、虾仁饵料的雌虾抱卵率也高达71.2%。可见有利于克氏原螯虾生长的饵料配比,不一定适合于其生殖和繁育,应根据不同生育阶段应配制不同的专用饵料。It was studied that Red Swamp Crawfish growing and laying eggs fed with different forage prescription. The results showed that the effect on different forage prescription of Red Swamp Crawfish growing and laying eggs were obviously different. Red Swamp Crawfish growed rapidly when fed with waterweeds, silkworm chrysalis or little fish, the increase of rate was biggest after fed with waterweeds 44 d, the male added 36.23%, and the fe- male added 27.17%. The survival rate of female was 12.1 times than male in the same forage and water environ ment, it was consistent with the rate of nature which is 1.13： 1. The increasing rate of female was more than male was 1.09 times. The nutrition balance between plant and animal forage was beneficial for laying eggs, the rate of laying eggs was added to 75%. When female fed with cow dung or shrimp meat, the rate of laying eggs was increased to 71.2%. The forage for growing was not the advantage on Red Swamp Crawfish for breeding. Red Swamp Crawfish in different growth period must be fed with special forage.

关 键 词：克氏原螯虾 饵料配比 生长 抱卵 

分 类 号：S968.22[农业科学—水产养殖] S963.161[农业科学—水产科学]