Growth Performance of the Green Tiger Shrimp Penaeus Semisulcatus Raised in Biofloc Systems

Effect of biofloc system on the water quality of the white leg shrimp Litopenaeus vannamei reared in zero water exchange culture tanks

“…The present study accepted with Hussain et al (2015) who found that increasing the levels of the C:N ratios (16:1) in the biofloc tanks have significantly influenced the values of pH during the culture period by keeping them more or less constant. This could be related to the presence of heterotrophic bacteria which consume organic matter and cause the increase in the level of water inorganic carbon (CO 2 ) and decrease the values of pH.…”

“…BFT was applied by many authors on different species of shrimp e.g. Zhao et al,(2012), Anand et al, (2013), Emerenciano et al, (2013a), Xu et al, (2013b), Kumar et al, (2014Kumar et al, ( ), wang et al, (2015, Hussain et al, (2015), Gaona et al, (2015Gaona et al, ( & 2016, Braga et al, (2015), Vilani et al, (2016) and Xu et al, (2016).…”

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“…Furthermore, concentrations of ammonia and nitrate were negatively associated with the numbers of bacteria (Figures 3, 4). These findings are in agreement to those reported by Tezuka [53] and Hoch et al [54] who stated that addition of carbon diminished inorganic nitrogen due to increasing uptake of NH4+ by bacteria. Zero water exchange ponds using carbon source enabled the control of the inorganic nitrogen accumulation through a balanced ratio of carbon to nitrogen in the feed [20,55,56].…”

Composition of population and abundance of Penaeus semisulcatus (De Haan, 1844) in relation to microbial population from Al-Faw, Basrah, Iraq

“…The results of morphometric measurements in the present study clearly showed that female shrimps had larger size than males. The size structure and abundance is common in other species of genus Penaeus [5][6][7].…”

“…Many researchers studied and evaluated size structure, abundance and shrimp fishery of green tiger shrimp (P. semisulcatus) in various water bodies around the world [2][3][4][5][6][7]. Bacterial infection is one of the major diseases in shrimp aquaculture [8].…”