碳菌调控对凡纳滨对虾试验围隔养殖效益的影响

Effect of probiotics and carbon source on shrimp culture profit in enclosure system

于2011年10月~2012年1月在广东省茂名市电白县某养殖池塘设置围隔,模拟凡纳滨对虾（Litopenaeus vannamei）高密度集约化养殖池塘,按照3 d一次的频率,添加不同量的糖蜜及芽孢杆菌（Bacillus sp.）,研究碳菌调控对其养殖效益的影响。结果发现,与对照组相比,当添加糖蜜为当日投喂饲料量的50%并结合强化使用芽孢杆菌时,养殖产量提高19.13%,饲料系数降低22.00%,养殖成本降低5.30%,净利润增加31.56%;当添加糖蜜为当日投喂饲料量的64%时,养殖产量提高17.85%,饲料系数降低21.00%,养殖成本降低4.82%,净利润增加26.61%。结果表明,在对虾高密度集约化养殖过程中,通过添加一定量的碳源并结合使用芽孢杆菌,可提高对虾的产量和成活率,促进对虾的生长,降低饲料系数,节省养殖成本,获得良好的养殖效益。

In order to simulate the high density intensive cultural model of Litopenaeus vannamei and explore the effect of probiotics and carbon source on profit, enclosure culture was carried out in Dianbai, Maoming, Guangdong province from October 2011 to January 2012. Different amounts of molasses and Bacillus were added every three days, which was used to study carbon bacteria on their breeding efficiency. The results showed that when the amount of carbon source was 50% of the daily feeding amount of feed and combined with Bacillus, the yields increased 19.13%, the feed coefficient reduced 22.00%, the cost reduced 5.30% and the net profit iflcrgased 31.56% compared with control group. When the amount of carbon source was 64% of the daily feeding amount of feed, the yields increased 17.85%, the feed coefficient reduced 21.00%, the cost reduced 4.82% and the net profit increased 26.61% compared with control group. The results indicated that by adding a certain amount of carbon source and combined with Bacillus, the yields and survival rate of shrimp could be improved. Meanwhile, the feed coefficient and the production cost could be reduced. It could obtain more culture profit.