摘要
用鱼粉和黄豆饼粉为主要蛋白源的试验饲料饲养草鱼两周,测定摄食前、后肠组织和肝胰脏蛋白酶、淀粉酶活性的变化以及不同时间前、中、后肠组织蛋白酶活性。结果表明:随摄食后时间的推移,鱼粉组肠组织蛋白酶活性迅速增高,到10h 达最大值,黄豆饼组则在15h 以后。两组肠组织淀粉酶活性均在10h 达到最大值。肝胰脏蛋白酶活性均在摄食后立即下降,到5h 降到最低值,随后缓缓升高,淀粉酶活性变化较平缓。肝胰脏蛋白酶与肠组织蛋白酶活性之间存在一种消长关系。总的看来,鱼粉组的蛋白酶、淀粉酶活性均高于黄豆饼组。前肠组织蛋白酶活性最高,中肠次之,后肠最低。
Digestive enzyme activities of grass carp fed with two test diets were studied at 0,5,10 and 15 hours over a period of two weeks.The experiments showed that intestinal protease ac- tivity in the fish meal group reaches a maximal level 10 hours after feeding,but in the case of the soybean meal group,the peak appears at the 15th hour.Amylase activity reaches a maxi- mun at 10 hours for both fish meal and soybean meal groups.Hepatopancreatic protease acti- vity decreases immediately after feeding,drops to its minimum after 5 hours,and then increa- ses gradually.In the case of amylase,similar changes are noticed,though they take place more slowly. In conclusion,the activities of protease and amylase in the fish meal group are higher than those in the soybean meal group.The protease activity is highest in the fore intestine and lowest in the hind intestine.
出处
《水生生物学报》
CAS
CSCD
北大核心
1993年第1期58-65,共8页
Acta Hydrobiologica Sinica
关键词
草鱼
饲料
蛋白酶
淀粉酶
蛋白
Grass carp
Diet
Protein
Protease
Amylase
