Growth Performance of Climbing Perch (Anabas testudineus) in Biofloc Culture System Using Different Sources of Organic Carbon

Authors

  • Arnuparp Wankanapol
  • Sudaporn Tongsiri
  • Prachuab Chaibu

Abstract

The aquaculture using biofloc technology is an intensive fish culture closed system. The distinctive point is the production of natural feed for fish derived from the combination of microorganisms and organic materials in ponds which is referred to as biofloc. This system is able to maintain a suitable water quality throughout the culture period, increase production capacity, and save the water usage. At present, there is no study the climbing perch culture in biofloc system. Then, the experiment objectives were to investigate growth performance of climbing perch (Anabas testudineus) cultured in biofloc system by adding different sources of organic carbon including the relationship between their growth performance and the concentration of biofloc in each carbon source. There were three local sources consisting of molasses, rice flour and rice bran especially the last two carbon sources were designed to combine with molasses at rate 50 : 50 ratios before adding in the culturing pond.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 The experiment was conducted in outdoor cylindrical plastic tanks with a diameter 2.5 m. and 1 m. height with 0.8 m. water depth. The water volume was kept between 2.5 - 3 tons at all time together with the dissolved oxygen was maintained above 4 mg/L throughout the culture period. The fish stocking density was stocked at rate 50 fishes/m3. The fish was fed according to catfish feeding program within 120 days before harvesting. The three carbon sources were added in the system when ammonia reached over 0.05 mg./L together with controlling 15 : 1 for C : N ratio. The results showed that the growth of climbing perch was reached the biggest marketable size at 4 fishes/kg. when adding all carbon sources. Moreover, weight gain, average daily weight gain, feed conversion ratio, specific growth rate and survival rate were no significances (P>0.05). However, it had a significant relationship between growth of climbing perch and concentration of biofloc in each treatment (P<0.05). Hence, the climbing perch is one of the most suitable species for culturing in biofloc system by adding rice flour or rice bran as good carbon source alternatives.  Keywords : growth performance ; climbing perch ; biofloc ; organic carbon source  

Author Biography

Arnuparp Wankanapol

  

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Published

2020-09-01