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适口的早期生长饵料,是获得养殖罗氏沼虾较高的成活率,夺取高产的关键。为此我们对早期罗氏沼虾幼虾的食性作了试验。试验是在四只规格(0.3×0.6m)相同的水簇箱中,各放入平均体长1.2cm(1.1～2cm)的试验虾60尾,水深保持30～40cm,以浅碗盆作食台,杨树须作隐蔽物和附着物,各放置增养气头一个。试验期间水温变化范围为20.5～31℃,饵料分成四组①梅鲚鱼粉;②仔鳗配合饲料;③红虫;④浮游植物屑、颗粒饲料。每天投饵两次,并及时
The palatability of the early growth of bait is to obtain a higher survival rate of cultured Macrobrachium rhamnosus, the key to winning high yield. To this end, we conducted experiments on the feeding habits of juvenile Macrobrachium rosenbergii. The test was carried out in four clusters (0.3 × 0.6m) of the same cluster, each of which was put into 60 test shrimp with an average body length of 1.2cm (1.1-2cm). The water depth was maintained at 30-40cm. , Poplar shall be concealed and attachments, each placed a Zaitoujigou. During the test, the water temperature ranged from 20.5 ℃ to 31 ℃. The bait was divided into four groups (①Meiwan fish meal; ②Egyptian eel feed; ③Thong bug; ④ phytoplankton crumbs, pellet feed. Feed twice a day, and in time