竹基质对鲤鱼和小型本地鱼类生长和生产的影响

Our Nature Pub Date : 2020-12-30 DOI:10.3126/ON.V18I1.34240
R. Poudel, S. Rai, D. Jha, R. Mandal
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引用次数: 1

摘要

在Chitwan地区Sukranagar村的农民池塘中进行了为期210天的田间试验,研究了基质对鲤鱼和SIS产量的影响。试验设T1(仅鲤鱼)、T2(鲤鱼+SIS)、T3(鲤鱼+底物)和T4(鲤鱼+SIS+底物)4个处理,共4个重复。池塘以2万尾/公顷的比例放养6种鲤鱼鱼种和2种小型本地鱼类鱼种,以5万尾/公顷的比例1:1放养。放养鱼前,在基质池中固定劈竹垫,覆盖池表面积的2%,以促进周围植物的生长。鲤鱼以每日3%体重的米糠和芥油饼(1:1)面团饲喂,草鱼以50%体重的草叶和香蕉叶饲喂。添加基质的鲤鱼池罗虎鱼和鲤鱼的生长、产量、总净鱼产量和毛利率均高于添加基质的鲤鱼池(p<0.05)。
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 Bamboo Substrate on Growth and Production of Carp and Small Indigenous Fish
A field trial was conducted to examine effects of substrates on yield of carp and SIS at Sukranagar Village, Chitwan district for 210 days in farmer’s pond. The experiment was designed with four treatments: T1 (carp only), T2 (carp+SIS), T3 (carp+substrate) and T4 (carp+SIS+substrate) with four replicates. Ponds were stocked with fingerlings of six carp species at a rate of 20,000 fish/ha and two Small indigenous fish species at a rate of 50,000 fish/ha in 1:1 ratio. Prior to stocking of fish, split bamboo mats were fixed in substrate ponds covering 2% of pond surface area to enhance periphyton growth. Carp were fed with dough of rice bran and mustard oil cake (1:1) at the rate of 3% BW daily while Grass carp was fed with grass and banana leaves at 50% BW. Growth and yield of Rohu and Common carp, combined net fish yield and gross margin were found higher (p<0.05) in carp ponds with substrate.
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