免疫刺激剂对不同放养密度凡纳滨对虾生长性能的影响

G. Mahasri, Widya Paramita Lokapirnas, M. N. Syamsi, M. Amin
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引用次数: 0

摘要

目的:研究不同时间施用免疫刺激剂对不同放养密度白对虾生长性能的影响。材料和方法:本研究采用两因素随机完全区组设计(RCBD)。因子A为给药次数(第7、14、21和28天),因子B为放养密度(10只/15 L、15只/15 L和20只/15 L)。采用方差分析(ANOVA)对不同处理的特定生长率(SGR)、饲料效率(FE)和饲料系数(FCR)进行比较,并采用Duncan’s多元极差检验,发现不同处理之间存在显著差异。结果:放养密度和给药时间对SGR、FE和FCR有显著影响,p<0.05;在施用第7天,饲养密度为20只/15 L的对虾的特定生长率最高。第21天的放养密度为15只/15 L时,饲料效率最高;第28天的放养密度为20只/15 L时,饲料效率最高。结论:免疫刺激剂(对虾全蛋白)给药时间和放养密度显著影响对虾的SGR、FE和FCR。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of Immunostimulant on Growth Performance of Whiteleg Shrimp (Litopenaeus vannamei) Reared at Different Stocking Densities
Objective: This study aimed at investigating the effect of immunostimulant administered at different times on the growth performance of whiteleg shrimp reared at different stocking densities. Materials and Methods: This study used a randomized complete block design (RCBD) with two factors. Factor A was administration times (7th, 14th, 21st and 28th days) and factor B was stocking densities (10 larvae/15 L, 15 larvae/15 L and 20 larvae/15 L). Data in terms of specific growth rate (SGR), feed efficiency (FE) and feed conversion ratio (FCR) were calculated and compared among treatments using Analysis of Variance (ANOVA), followed by Duncan's Multiple Range Test to find a significant difference among treatments. Results: The results showed that SGR, FE and FCR were significantly affected by stocking density and administration time, p<0.05. The highest specific growth rate was obtained from shrimp with a stocking density of 20 shrimps/15 L at the administration of the 7th day. While the best FE is in a stocking density of 15 shrimps/15 L given on the 21st day, then the best FCR was in a stocking density of 20 shrimps/15 L given on the 28th day. Conclusion: SGR, FE and FCR of white shrimp were significantly influenced by the administration time of immunostimulant (whole protein of Zoothamnium penaei ) and stocking densities.
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