6种功能性添加剂组合对克氏原螯虾生长和繁殖的影响

2021-12-18 15:24:22宋光同王芬蒋业林陈祝李正荣麻嘉浩叶圣陶王佳佳徐彬周翔
安徽农业科学 2021年23期
关键词:生长

宋光同 王芬 蒋业林 陈祝 李正荣 麻嘉浩 叶圣陶 王佳佳 徐彬 周翔

摘要 在饲料中拌喂高稳VC应激宝(A组)、免疫多糖(B组)、EM菌(C组)、高稳VC应激宝+EM菌(D组)、免疫多糖+EM菌(E组)、高效生物离子钙(F组),不喷涂任何功能性添加剂的颗粒饲料组作为对照组(G组),研究6种功能性添加剂组合对克氏原螯虾生长和繁殖的影响。结果表明,F组克氏原螯虾特定生长率最高(0.918%/d),G组次之,C组最低(0.552%/d);D组克氏原螯虾成活率最高(84.4%),A组次之,E组最低;G组克氏原螯虾抱卵率最高(81.6%),C组次之,F组最低。由此可见,在高温和克氏原螯虾繁殖季节,适量拌喂离子钙可以有效促进克氏原螯虾的生长;拌喂VC和EM菌可以提高克氏原螯虾的成活率;用于繁殖的克氏原螯虾不需要喂养任何功能性添加剂,就可以取得不错的繁殖效果。

关键词 克氏原螯虾;功能性添加剂;生长;繁殖

中图分类号 S 966.12  文献标识码 A  文章编号 0517-6611(2021)23-0118-03

doi:10.3969/j.issn.0517-6611.2021.23.031

Effects of Six Combinations of Functional Additives on the Growth and Reproduction of Procambarus clarkii

SONG Guang-tong,WANG Fen, JIANG Ye-lin  et al

(Fisheries Research Institute, Anhui Academy of Agricultural Sciences, Key Laboratory of Aquaculture and Stock Enhancement in Anhui Province, Hefei, Anhui  230031)

Abstract Gaowen VC Yingjibao(group A) , immunity polysaccharide (group B), effective microorganisms (EM, group C), Gaowen VC Yingjibao+EM (group D), immunity polysaccharide + EM (group E), highly efficient biological ionic calcium (group F) were added in the feed, no functional additive was added in control group (group G ). The effects of 6 combinations of  functional additives on the growth and reproduction of Procambarus clarkii were studied. The results showed that the specific growth rate of P. clarkii in group F was the highest (0.918%/d), followed by group G, that in group C was the lowest (0.552%/d). The survival rate of P. clarkii in group D was the highest (84.4%), followed by group A, and that in group E was the lowest. The spawning rate of P. clarkii in group G was the highest (81.6%), followed by group C, that in group F was the lowest.  Therefore, during high temperature and breeding season, the growth rate of P. clarkii could be effectively promoted by adding appropriate amount of ionic calcium, and the survival rate of P. clarkii could be improved by adding VC + effective microorganisms. Good reproduction effect of P. clarkii could be achieved without adding any functional additive for the reproduction of P. clarkii.

Key words Procambarus clarkii;Functional additives;Growth;Breeding

基金項目 安徽省重点研究与开发计划项目(201904a06020032);安徽省水产产业技术体系项目(皖农科〔2016〕84号)。

作者简介 宋光同(1979—),男,安徽肥东人,副研究员,硕士,从事虾类健康养殖研究。通信作者,研究员,从事特种水产养殖研究。

收稿日期 2021-08-30

克氏原螯虾(Procambarus clarkii),俗称淡水小龙虾、小龙虾等,属于节肢动物门甲壳纲十足目爬行亚目螯虾科原螯虾属,是我国重要的淡水经济虾类之一,2020年全国总养殖面积达145.63万hm2,总产量达239.37万t。小龙虾适宜生长温度为15~30 ℃,最适宜温度为21~28 ℃,每年上半年温度适宜,小龙虾生长速度快;下半年随着温度升至30 ℃以上,且性腺发育开始加速,小龙虾生长速度普遍下降[1-3]。……

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