不同饵料添加剂对泥东风螺幼螺生长及消化酶活性的影响

Effects of different feed additives on the growth and digestive enzyme activity of Babylonia lutosa

采用饲养试验方法,探讨在饵料中添加中药制剂、微生态制剂及多维制剂对泥东风螺生长及胃蛋白酶、脂肪酶和淀粉酶等消化酶活性的影响。以平均体重(3.99±0.94)g、平均壳高(25.58±4.56)mm的泥东风螺幼螺为研究对象,分为S0空白对照组、S1中药制剂组、S2微生态制剂组、S3多维制剂组以及S4混合投喂组(每日选择中药制剂、微生态制剂及多维制剂其中一种轮换投喂)。结果显示,S4在试验40 d结束时,平均体重为(11.79±0.32)g,是S0的1.32倍,差异显著。三种消化酶活性均随投喂时间的增加而呈先升高后降低趋势,胃蛋白酶、脂肪酶及淀粉酶之间存在协同作用。对泥东风螺生长、消化酶的影响以S4组最显著,S1、S2组幼螺各指标波动幅度较大,S3组较为稳定。四个处理组均显著影响消化酶活性,但效果逐渐减弱,所以低频率地添加并配合使用多维制剂、中药制剂及微生态制剂能够有效地促进泥东风螺幼螺的生长和消化功能。

A feeding experiment was to determine the physiological effects of different feed additives on the growth and digestive enzymes include pepsase, amylase and lipase of Babylonia lutosa. Babylonia lutosa with average initial body mass of （3.99 ±0. 94） g and shell height of （25.58 ±4. 56） mm were divided into SO group （the control group）, S1 group （Chinese medicine group ）, S2 group （microbial ecological agent group）, S3 group （multivitamin group） and S4 group （the mix group, chose one different agent every day）. The results showed that ： S4 had a highest average body mass by （ 11.79 ± 0. 32） g after experimenting for 40 d, which was 1.32 times higher than SO, different significantly. The digestive enzymes activity had a trend of increasing first and then decreasing, and there was synergy among the digestive enzymes. The effect of additive was more significant in S4, but there was a large fluctuations in S1 and S2, and kept stable in S5. So the experiment showed that S4 had a great effect on growth and digestive enzymes activity, but the effect weakened wiht the test time pass, S1, S2 and S5 are also so. Especially, S1 had a high pepsase activity and S3 had a high lipase activity in the early experiment stage. It showed that low frequency additive adding could promote digestion performance and growth for Babylonia lutosa.