期刊名称：Journal of Environmental Science and Natural Resources
印刷版ISSN：2408-8633
出版年度：2015
卷号：6
期号：2
页码：191-196
语种：English
出版社：Bangladesh Society for Conservation of Environment and Natural Resources
摘要：The present experiment was conducted to study the culture practice of Thai Koi ( Anabas testudineus) with different stocking densities and their growth performance. The study was carried out over a period of 76 days from 22 June, 2008 to 05 September, 2008 in Tarakanda upazila of Mymensingh district. For the study, the experiment was undertaken with 3 treatments (T 1 , T 2 and T 3 ) each having two replications (R 1 and R 2 ). Three different stocking densities designed as treatments viz., 550 in T 1 , 400 in T 2 and 350 fry /dec in T 3 . The fry of same size (length 2.45 cm and weight 5g initially) were stocked and they were fed with commercial pelleted feed according to their body weight. At the very beginning 16% feed were provided with frequency 4 times in a day. It was decrease up to 4.5% before 10 days of harvesting. During the experiment period, water quality was assessed fortnightly. The average temperature was found 28.21±0.870, 28.78±0.510 and 28.76±0.78 0 C in treatments T 1 , T 2 and T 3 respectively. The pH ranges were varied between 7.70 to 9.10 among the three treatments. The mean values of dissolve oxygen were 5.33±0.34, 4.23±0.13, 4.16±0.14 mg/L respectively in the three consecutive treatments. The growth performance was determined by measuring length (cm) and weight (g). Treatment-3 where stocking density was less showed the best growth performance followed by T 1 and T 2 . The production was higher 8719.10kg/ha in T 1 was obtained from this treatment. DOI: http://dx.doi.org/10.3329/jesnr.v6i2.22116 J. Environ. Sci. & Natural Resources, 6(2): 191-196 2013
