摘要
室内水族箱和室外网箱饲养试验表明,水温20~25℃时,体长8.5~8.9cm和15.0~15.3cm的鲤摄食直径为3.0和4.0mm的颗粒饲料生长最快,饲料系数最低,我国北方网箱养鲤在5、6、7~8和9月应分别投喂直径3、4~5、6和4mm的颗粒饲料,应用最佳饲料的直径与体长比(PFR)时,除考虑鱼体长(口径)外,还应考虑影响鲤消化的相关因素。水温高于20℃时,鲤的PFR应为0.026~0.035,低于20℃时为0.018~0.025。
The effect of particle size of a commercial pelleted feed on the growth of common carp(Cyprinus carpio L. )from juvenile to adult was investigated using aqarium feeding and cage culture experiments. Twenty juveniles ( 8.5─8.9 cm and 15.0─15.3 cm in body length)were reared in one of six aquaria(80 cm ×100 cm × 60 cm)and presented with one of six sizes of food particles throug 1,2,3,2,4 to 6 mm. Fish varying from 8.5 to 8.9 cm in body length showed maxi-mum growth on particle diameter of 3 mm and fish from 15.0 to 15.3 cm in body length on 4 mm-diameter particle, Twenty juveniles(14.8±1.8 cm in body length) were reared in one of three 100 cm × 80 cm × 60 cm-cages and fed withone of three sizes of food particles,(diameter of 4,5 ,and 6 mm) from May to September in 1992 and 1993. At water temperature of over 20 ℃ , fish grewrapidly on particle diameter 0.026 to 0.035 X fish body length (PFR)but 0.018 to 0.025 atbelow 20℃,i.e.carp showed maximum growth when they were fed with 3,5, 6 and 4 mm diameter food particles in May,June,July-August and September, respectively.
出处
《大连水产学院学报》
CSCD
1994年第3期72-77,共6页
Journal of Dalian Fisheries University