在家养螃蟹都喂它什么食物_河蟹要怎么饲养-世界聚焦
2023-03-02 08:57:18 来源:互联网
河蟹饵料的投喂是养蟹成败的关键措施之一。掌握好合理的投喂技术,保证和挟吃饱吃好,能够提高饵料利用率,节约成本,提高经济效益。对此,在饲喂河蟹时,应注意以下几点。
1.坚持定点投喂饲喂
河蟹的饵料应投放在固定的投喂点上,不能随意更换。这样既可直接观察河蟹的摄食情况,决定投饵量,又可让河蟹养成定点摄食的习惯,不会造成浪费。投饵点可选择在池中的浅滩上;蟹池过小,应沿四周浅坡投喂。
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2.饵料应新鲜适口
螺蚌肉、野杂鱼等动物性饵料不应腐烂变质,人工制作的精饲料不要霉变发黄,山芋丝、南瓜片、水草等植物性饲料应鲜嫩爽口。幼蟹饵料要求细小柔软,成蟹饵料可做成团块状或长条状,力求大小适宜,便于河蟹摄食。粉状或碎饵不要直接投喂成蟹,防止败坏水质造成浪费,应用面粉等粘合剂加水调制后,做成一定的形状,再行投尾。
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3.饵料品种要多样化
河蟹饵料应保持动物性饵料和植物性饵料合理搭配,力求营养全面。在投喂时,要随着季节和时间的变化不断调整饵料品种,严防饵料单一。
4.饵料中可加药物投喂
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预防蟹病是河蟹养殖过程中的一项重要工作。投喂时,应经常自制药饵投喂,能有效地防止蟹病的发生。养殖户在投喂时,可以搅拌添加乳酸菌投喂,不仅能促进消化,有益肠道健康,提高饵料利用率,降低饵料成本;还能一定程度抑制有害细菌滋生。
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