Effects of dietary medicinal herbs and Emphasis T

Authors: MingChao Yu ZhuoJia Li HeiZhao Lin GuoLiang Wen Shen Ma

Publish Date: 2008/09/17

Volume: 17, Issue: 4, Pages: 377-384

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Abstract

The basal diet C with 020 medicinal herbs M and 030 Bacillus BM1 with 010 medicinal herbs and 015 Bacillus BM2 and with 030 Bacillus B was used to feed white shrimps Litopenaeus vannamei 191 ± 003 g in order to assess survival growth body composition and digestive enzyme activity At the end of the feeding trial survival ranged from 9583 to 9833 with no significant difference P  005 among all groups Growth measured as weight gain was significantly P  005 higher in shrimp fed with BM2 BM1 and M compared to that of C However no significant differences were found among B BM1 and M In the case of specific growth rate the shrimp fed with BM1 and BM2 exhibited significantly P  005 higher values than that of C The contents of body moisture crude protein and ash seemed to be unaffected by the feed supplements though lipid content was found to be significantly P  005 different among the treatments The shrimp fed with BM1 and BM2 had the lowest and highest lipid contents respectively The digestive enzyme activity assessed using shrimp hepatopancreas revealed that the activities of amylase and protease in shrimp fed with BM2 were significantly P  005 higher than those of C at the end of the 2nd and 6th weeks However better performance of the specific amylase activity was shown by the shrimp fed with B at the end of the 8th weekThe authors are grateful and indebted to Prof Mai KS and Ai QH for their kind advice and assistance This study was supported by funds from National Key Technologies RD Programme Grant no 2004BA526B0202 2006BAK02A22 and Fishery prosper Science and Technology Project of Guangdong Province of China Grant no B200201A01

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