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两次对6个缢蛏家系(A1、B1、C1、D1、E1和F1)生长性状(壳长、壳高、壳宽、总重和软体部重)进行测量、分析,并测定其体内淀粉酶活性和纤维素酶活性。发现缢蛏胃、消化盲囊等器官内淀粉酶活性较高,而纤维素酶的活性很低,消化酶活性与其滤食微藻的食性有关系。对比缢蛏生长性状的增长和消化酶活性的提升,结果表明家系D1的5个生长性状均取得最大值,且与家系A1、B1、C1、E1及F1存在显著差异(P<0.05)。家系F1的5个生长性状均取得最小值,且各性状显著小于家系D1。随着日龄的增长,各个家系缢蛏个体的淀粉酶活性和纤维素酶活性都有所增长,2次的测量值显示同样的趋势,D1>C1>E1>A1>B1>F1。发现缢蛏消化酶活性与生长发育相关,较快的生长速度对应较强的消化生理机能,高水平的消化酶活性有利于缢蛏对营养物质的消化吸收并转化为生长发育所需的能量。
The growth traits (shell length, shell height, shell width, total weight and soft body weight) of 6 families of Emu owl (A1, B1, C1, D1, E1 and F1) were measured and analyzed twice and their amylase Activity and cellulase activity. The results showed that amylase activity was high in organs such as emu stomach, digestive blind capsule and the like, while the activity of cellulase was very low. The activity of digestive enzymes was related to the diet of microalgae. Compared with the increase of growth traits and the increase of digestive enzyme activity, the results showed that all the five growth traits of D1 in the pedigree achieved the maximum value, and there was a significant difference (P <0.05) with the A1, B1, C1, E1 and F1 families. The five growth traits of F1 were obtained the minimum, and the traits of F1 were significantly less than those of the family D1. With the increase of age, the amylase activity and cellulase activity of individuals of each family were increased. The two measurements showed the same tendency, D1> C1> E1> A1> B1> F1. It was found that the activity of digestive enzymes of Dioscorea zingiberei was related to the growth and development. The faster growth rate corresponded to stronger digestive and physiological functions. The higher digestive enzyme activity was conducive to the digestion and absorption of nutrients and the energy required for growth and development.