生长期中华鳖体内营养物质沉积率与饵料营养水平的关系研究

STUDIES ON THE CORRELATION BETWEEN TURTLES' NUTRIENT RETENTION AND THE DIET NUTRIENT LEVELS

以150g左右、健壮的170只中华鳖为试验动物,随机分为17个组(其中1个组为“对照组)。以饵料能量、蛋白质为试验因素,采用2因子5水平回归正交旋转组合设计,得到9个试验饵料配方及其营养组合,进行60d饲养试验。试验表明,第9组鳖和第10～16组鳖平均体增重最高为2.22g/d,能量(GE)、蛋白质(CP)、脂肪(EE)和氨基酸(AA)沉积率分别达到36.27％、56.48％、55.06％和43.66％。试验条件下鳖体内营养物质沉积率与饵料配方营养水平及其组合有密切相关关系,9号饵料配方、营养水平及其组合比较适宜于生长期鳖的需要。

170 healthy turtles about 150g were randomly divided into 17 groups (ind). Using dietary protein and energy contents as factors, this experiment was conducted with six-teen-group turtles fed nine kinds of diets determined by the two-factor, fire level orthogonal rotary modular design. After 60 days feeding experiment, results were as followed: the ninth diet and the tenth to sixteenth diet had the highest daily weight gain (2.22g/d) ; the retention of GE, CP, EE, AA were 36. 27%, 56. 48%, 55. 06% and 43. 66% . The results obtained suggested that the relationship between the nutrient retention and diet nutrient levels was significant, the nutrient level and formula of the ninth diet was the optimum diet for the growth turtles.