池塘养殖环境下滇池金线鲃仔稚鱼的食性转化与生长

2008年3月—2009年3月，把35 000尾滇池金线鲃(Sinocyclocheilus grahami)仔稚鱼分别饲养于3个池塘进行对比饲养研究。密度分别是：P1为208尾/m3；P2为167尾/m3；P3为41尾/m3。饲养期间采用相同的管理措施。每天数据收集采用：在仔鱼孵化后的5～16 d的每天8:00和18:00从每个育苗池中捞取5～8尾仔鱼进行测量分析。仔鱼开口30ｄ后，每月从培育池各捞取15尾，测量全长和体重。研究发现，滇池金线鲃仔鱼的开口时间为孵化后的5ｄ，混合营养期3～5 d，这与初孵的滇池金线鲃仔鱼的全长和卵黄囊较大有关。在容易造成仔鱼大量死亡的混合营养期，通过采用浆状物—轮虫—人工混合饲料的方式，大幅度提高了滇池金线鲃仔稚鱼的存活率，孵化一年后的滇池金线鲃稚鱼存活率可达82.7%。经过一周年的饲养，滇池金线鲃稚鱼的体重由(0.027±0.01) g（0.003~1.22）增长到(8.83±0.54) g（3.7~16.7），月均增重为0.73 g；全长由(15.8±0.30) mm（11.5~20.0）增长到(91.6±1.67)mm（75.0~16.0），全长月均增长6.32 mm。滇池金线鲃稚鱼全年全长的增长呈线性相关，y=9.82+7.05 month（R2=0.989 1）；全年体重的增长呈指数关系，y=0.0158 month2.54（R2=0.993 9）。

Feeding Changes and Growth Performance of Sinocyclocheilus grahami (Pisces, Barbinae) Larvae and Juveniles in Farm Environment

From March 2008 to March 2009, comparative observations of feeding and growth were undertaken on 35,000 larvae cultivated in 3 pools, with respective densities of P1 208 larvae/m3;P2 167 larvae /m3;P3 41 larvae/m3. Identical daily management processes were applied to the 3 pools. Data was collected on 5?8 larvae everyday at 08:00 and 18:00 within 15 days of hatching. 30 days from first dieting, the total length and body weight were measured on 15 juveniles collected from each pool. The first dieting of S. g...