不同放养密度下单性罗非鱼的生长和产量

Karuna Sapkota, Susant Mani Chaudhary, Laxmee Bhandari, M. Magar, Birendra Chaudhary, S. K. Jha, P. C. Pandey, J. Shrestha
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引用次数: 0

摘要

2019年夏季和雨季,在尼泊尔Baitadi Gokuleshwor的一个淡水池塘中对单性罗非鱼(Oreochromis niloticus L.)进行了100天的评估。鱼种的放养密度分别为每立方米5、10、15和20条。放养时,鱼种平均体重为8.5克。每个处理有4个重复。每种治疗方法都包括每天喂鱼两次。结果表明,随着放养密度的增加,特定生长率和存活率呈下降趋势。随着放养密度的增加,罗非鱼的生长性能下降。当放养密度为5条/ m3时,鱼的生长量最高,但当放养密度为20条/ m3时,产量最高。根据本研究结果,农民应采用更高的放养密度来实现产量最大化。南盟J.农业科学通报,20(2):247-259 (2022)
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Growth and production of monosex tilapia (Oreochromis niloticus L.) under different levels of stocking densities
Monosex tilapia (Oreochromis niloticus L.) was evaluated in a freshwater pond for 100 days at Gokuleshwor, Baitadi, Nepal during the summer and rainy seasons of 2019. Fingerlings were supplied at stocking densities of 5, 10, 15, and 20 fish per m3. At the time of stocking, the average fingerling weight was 8.5 grams. Each treatment had four replicates. Each of the treatments involved feeding the fish twice a day. The results revealed that the specific growth rate and survival rates decreased with increasing levels of stocking density. As stocking density increased, the growth performance of tilapia dropped. Fish growth was the highest at a stocking density of 5 fish per m3, but the production was the highest at a stocking density of 20 fish per m3. According to the findings of this study, farmers should use higher stocking densities to maximize production. SAARC J. Agric., 20(2): 247-259 (2022)
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