摘要
用蛋白质梯度饲养法测定蛋白质适宜含量范围，以增重率为指标，采用直线和抛物线回归，计算得出幼鲟饲料蛋白质适宜需要量为３５ ．４１ ％ ～４９ ．０９ ％ ；用正交试验法，以生长比速、蛋白质效率和饲料系数为评价指标，筛选幼鲟最适生长的饲料营养素含量为：蛋白质４０ ．４１ ％ ，脂肪９ ．０６ ％ ，糖２５ ．５６ ％ ，纤维素４ ．０８ ％ 。各营养素对幼鲟的生长及蛋白质效率的影响大小为：蛋白质＞ 脂肪＞ 糖＞ 纤维素，其中蛋白质为影响生长和鱼体成份变化的主要因素（ Ｐ＜ ０ ．０５） ；用脂肪梯度饲养法对正交试验结果进一步重复和验证，结果吻合。
The nutritional requirement of juvenile Chinese sturgeon (Acipenser sinensis) for protein,fat, carbohydrate and cellulose were studied through 3 experiments. A protein gradual experiment was conducted to determine the dietary protein requirement range by juvenile Chinese sturgeon which were fed with a dietary of about 5% body weight per day [average body weight(8.00 ±0.1)g/fish, water temperature 13～15℃]. The protein requirement of juvenile sturgeon was estimated by the WGR%, using both methods of polynomial regression and parabolic curve, to be 35.41%～49.09%. An orthogonal design was employed to determine the nutritional requirement for protein (40.41%), fat (9.06%), carbohydrate (25.56%), and cellulose (4.08%), respectively,by using specific growth rate, protein efficiency ratio and feed conversion ratio as the biological indexes to assess the feeding effect.The results show that the influence of nutrients on the specific growth rate and protein efficiency ratio is as following order:protein>fat>carbohydrate>cellulose,in the range of the factor levels.Thus,the nutritional protein level has a main effect on growth and body composition of Chinese sturgeon (P<0.05). Feeding experiment with various fat levels were done in order to repeat and affirm the result of the orthogonal experiment.
出处
《中国水产科学》
CAS
CSCD
1999年第4期33-38,共6页
Journal of Fishery Sciences of China
关键词
中华鲟
幼鱼
配合饲料
营养需求
Acipenser sinensis, juvenile, formulated diet, nutrient requirement
