推荐回答(1个)
亲爱的楼主您好;
-----------------------------------------------------------很高兴为您回答
问题:鸭嘴鱼养殖要多少地技术
回答:饲养方法
1:鸭嘴鱼的适温范围广。既不怕低温,也能忍耐高温。在冬季,即使水面结冰,只要水中仍有充足的溶解氧,就能在冰下的水中生活;在夏天,池塘表层水温往往会超过35°C,它仍然可以正常的生长!
2:生长快。鸭嘴鱼是淡水鱼类中生长最快的鱼类之一。当年孵化出来的鱼苗饲养到年底,每尾(专养)可达到1.5市斤。套养可达2斤以上!
3:饲料省。它主要是吃浮游动物的,套养中不用单独投喂饲料。专养的话饲料比也不会超过1.3:1.
4:易捕捞。它的习性与花鲢相似,不善跳跃。第一网的起捕率在90%以上!
5:病情少。主要是寄生虫类。现今还没什么病情出现!
5养殖技术
养殖点选择
养殖点选择在城前洼陡水库。养殖区水域面积大,水深6m以上,溶解氧6~9mg/L,pH值7~8.4,总硬度为20~40mg/L,氨氮为0.02~0.06mg/L,亚硝酸盐为0.0015~0.01mg/L,水质良好,符合GB1160《渔业水质标准》和NY5051-2001《无公害食品淡水养殖用水水质》标准的全部要求。
网箱结构和设置
网箱设置参考鲢鱼网箱,选择浮游生物量丰富的水域,要求水流平稳,避风向阳,环境安静网箱框架采用简易毛竹框架。箱体材料选用聚乙烯无结网片。网箱规格为5m×5m×2.5m,网目大小2.5cm。匙吻鲟怕光,网箱表面用黑色薄膜遮盖。
苗种选择和放养
选择体质健壮、游动活泼、规格整齐、无病无伤的优质苗种。放养密度为每平米20~40尾。规格为10~15cm,根据匙吻鲟苗种对水温变化较敏感的特点,在苗种进箱时温差不宜过大,以不超过±2℃为宜,尽量调节一致。进箱前用1.5%~2.0%的食盐水进行8~10分钟的鱼体消毒。
科学投饵
放养初期以投喂浮游动物(如红虫)为主,然后逐步驯化转食改投浮性颗粒饵料,并辅以夜间灯光诱饵。饵料要求新鲜不变质,营养丰富,粒径适口。投饵遵循“四定”原则。在水温在20~30℃时,日投饵率为1.5%~3%;水温20℃以下时,日投饵率为0.5%~1.0%。具体根据摄食情况、天气、水质等及时高速。投饵次数为每天3次,分别为07∶00~08∶00时、11∶00~12∶00时、18∶00~19∶00时。
及时分箱
匙吻鲟生长速度很快,应及时分规格培育,避免两极分化,有利于提高成活率。
勤巡箱
1.严格执行早、中、晚巡箱制度细心观察鲟鱼的摄食及活动情况,及时捞除残饵。定期冲洗网箱,防止网眼堵塞,影响箱内外水体交换。
2.保证网箱安全 下雨天和暴风雨季节,随时注意加固网箱。还要经常检查网箱有无破损,发现破损及时修补。网箱上口还要安装黑色的遮光尼龙布和防盗网。
3.做好日常记录 每天记录好气温、水温、投饵量和发病死亡数量等。发现异常情况,及时采取措施。
鱼病防治
坚持“以防为主、健康管理”原则。苗种放养和每次分箱时都用1%~2%的食盐或0.4mg/L的二溴海因等药物药浴后进箱,并且每隔20天左右在网箱内用15mg/L的生石灰和0.3mg/L二溴海因泼洒消毒。网箱周围水域严禁使用违禁药物。
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谢谢
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