Engineering Technology of White Shrimp (Litopenaeus vannamei) Intensive System Culture with the Suplementation of Phytase Enzyme in the Diet

D. Rachmawati, I. Samidjan
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引用次数: 1

Abstract

This study aims to examine the effect of phytase enzyme in the diet on digestibility of growth of white shrimp (Litopenaeus vannamei) raised in intensive system culture. Research on the suplementation of phytase enzymes in L. vannamei diet is very important to hydrolyze phytic acid in vegetable ingredients as a source of diet protein so as to increase the efficiency of diet utilization to support growth of vaname shrimp. The shrimp used in the research had average weight of 1,19±0,06 g/shrimp.  The diet contained 38% of protein and 3200 Kcal DE/kg with various doses of phytase enzyme suplementation, namely: A (0 U/kg diet), B (500 U/kg diet), C (1000 U/kg diet) and D (1500 U/kg diet).  Observed parameters were digestibility of phosphore (ADCF), disgetibility of protein (ADCP), efficiency of diet utilitzation (EFU), protein efficiency ratio (PER), diet convesion ratio (FCR) relative growth rate (RGR), and survival rate (SR).  The suplementation of phytase enzyme in the diet significantly influenced (P<0.01) on ADCF, ADCP, EFU, PER, FCR, RGR; however, it did not significantly influence on SR of white shrimp.  The best treatment result was the suplementation of 1000 U/kg diet phytase enzyme (treatment C). The optimum dose of phytase enzyme in the diet was 867, 920, 923, 915, 1000 and 1000 U/kg of diet respectively for ADCF, ADCP, EFU, PER, FCR, RGR. Based on those result the suplementation of phytase enzyme can increase the growth of white shrimp.
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饲料中添加植酸酶的凡纳滨对虾集约化系统养殖工程技术
本试验旨在研究饲粮中植酸酶对集约化系统养殖凡纳滨对虾生长消化率的影响。研究在凡纳滨对虾饲料中添加植酸酶,对水解蔬菜原料中的植酸作为饲料蛋白质来源,提高饲料利用效率,支持凡纳滨对虾生长具有重要意义。试验用对虾的平均体重为1.19±0.06 g/只。饲粮中蛋白质含量为38%,DE值为3200千卡/kg,在饲粮中添加不同剂量的植酸酶,即A (0 U/kg饲粮)、B (500 U/kg饲粮)、C (1000 U/kg饲粮)和D (1500 U/kg饲粮)。观察磷消化率(ADCF)、蛋白质消化率(ADCP)、日粮利用效率(EFU)、蛋白质效率(PER)、日粮转化率(FCR)、相对生长率(RGR)和存活率(SR)。饲粮中添加植酸酶对ADCF、ADCP、EFU、PER、FCR、RGR有极显著影响(P<0.01);但对白对虾的SR影响不显著。以添加1000 U/kg植酸酶(处理C)为最佳处理效果,ADCF、ADCP、EFU、PER、FCR、RGR的适宜添加量分别为867、920、923、915、1000和1000 U/kg。在此基础上,添加植酸酶能促进白对虾的生长。
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