南美白对虾一天喂几次食

2025-04-02 10:26:02
推荐回答(5个)
回答1:

养殖南美白对虾节省饲料的方法

1 清除野杂鱼,减少争食者 池内野杂鱼、杂虾较多,会同南美白对虾争夺饵料,甚至会残食白对虾,低质鱼虾争食饲料,会降低饲料利用率,因而应注意将其清除,方法是放苗前进水20—30厘米,每亩用生石灰150千克化浆后全池泼洒进行彻底清塘消毒,杀灭池牛野杂鱼。进水时加过滤网袋,防止野杂鱼类随水入池。 2 注意饲料的选择及补充 2.1 要选择正规厂家生产的南美白对虾专用饲料,饲料配方合理,可保证对虾生长迅速,避免饲料的浪费。不要采用其他虾料来替代。 2.2 养殖前期,要注意施肥,培育起有益于虾生长的生物群落,如底栖生物、浮游生物等。并可向池内移植一些有益的饵料生物,这样可少投饵或不投饵,随着基础饵料的消耗,可投喂一些无病原体的鲜活饵料及幼虾专用配合饲料,然后逐渐过渡到投喂南美白对虾专用饲料,这样可节省部分饲料。 2.3 养殖后期,当虾病暴发期过后,投喂鲜活饲料已不致于大量引发虾病,即可根据当地饲料来源情况投喂一些鲜活饵料,以节约饵料成本。但要注意饲料一定要新鲜,不腐败变质。 3 保持水质清新 养虾先养水,水质的好坏影响虾的体色、生长的快慢及饵料系数。南美白对虾喜清新的水质,水质好,虾生长迅速,疾病少,可充分利用饵料,降低饵料系数,因而养殖南美白对虾应注意调节水质,保持水质清新。一般要求水呈黄绿色,透明度30—40厘米,溶氧4毫克/升以上为好。 常用的水质调节办法有:①勤换水,———般7—10天换水一次,每次换10%-20%;②定期泼洒生石灰,每10—15天一次,浓度为15克/米3;③安装增氧机,用增氧机调节。④使用生物制剂,如光合细菌等来调节水质。 4 掌握好投饵技巧 4.1 少量多次:依对虾的摄食习惯及生长特性,要坚持少量多次的原则,且不同的时间投饲量也不相同,一般7:00投日投饲量的30%,11:00投10%,18:00投40%,23:00投20%。 4.2 掌握适宜的投喂量:投饵量的多少较难掌握,过多造成饲料浪费,过少则虾吃不饱,不利于生长。比较切实可行的办法是搭设饵料台,沿池四周设置几个1.0米2左右的饵料台,投喂时沿池均匀泼撒,投喂1.5-2小时后检查虾的摄食情况,正常情况下若饱胃率占60%—70%,则投喂合理,饱胃率过高则降低投饲量,过低则提高投饲量。 4.3 根据天气情况投喂:天气晴朗,风和日暖时多喂;天气不好,阴雨连绵,天气闷热或寒流侵袭时少喂或不喂。 4.4 根据虾情投喂:根据虾的生长情况及有无疾病灵活掌握投饲量。虾生长旺盛,无疾病时适当多喂,反之则少喂;虾大量蜕壳时少喂,蜕壳一天后多喂。 4.5 根据水温投喂:水温低于18℃或高于32~C时少喂,25-30℃时多喂。 4.6 根据水质情况投喂:水质清新,溶氧充足时虾摄食旺,可正常投喂;而水质较差,溶氧较低时则少喂或不喂。

回答2:

一天可以喂4次,早晨4点、9点、18点、22点
一天可以喂5次,早晨4点、9点、14点、18点、22点

回答3:

3次。早上10点喂一次,喂多一点,下午4点到5点再喂一次,少一点,晚上9点喂一次,适量即可。

回答4:

4次 早上6点 上午十点半 下午2点 晚上7点 各喂一次

回答5:

3次

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