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Author: search.filters.author.Jongput, B.

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    Effects of Bacillus probiotics, Bacillus subtilis and Bacillus cereus dietary additional to controlling Vibriosis infection of white shrimp (Litopenaeus vannamei)
    (2024-01-01)
    Wongpracha, P.
    ;
    Kanthawong, P.
    ;
    Arun, J.
    ;
    Jeyaraj, G. P.
    ;
    Jongput, B.
    The effects of the Bacillus probiotics powder, Bacillus subtilis 7 x 10<sup>6</sup> cfu g<sup>-1</sup> and Bacillus cereus 2.5 x 10<sup>7</sup> cfu g<sup>-1</sup> via dietary additional to control vibriosis disease in white shrimp culture for 14 days were evaluated. The results indicated that good recovery in shrimp fed with probiotic (T4) and the mortality reduced (86.7%), in comparison with the group without probiotics and with pathogen, Vibrio spp. (T3). In addition, it presented lower counts of Vibrio spp. than group fed without the probiotic causing a significantly reduced pathogen. Bacillus probiotics, B. subtilis and B. cereus had a better effect on hematological shown in the total haemocyte counts (THC) of the group with probiotic and with pathogen, Vibrio spp. (T4) had the highest THC every day throughout the experiment experiment followed by the group with probiotic and without pathogen (T2) respectively. Therefore, B. subtilis and B. cereus significantly enhanced the shrimps' ability to recover from Vibrio spp. infections and enhanced the quality of their cultures.
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    Appropriate stocking density for growth of watermeal (Wolffia arrhiza) and its efficiency of total ammonia nitrogen removal
    (2021-01-01)
    Sirirustananun, N.
    ;
    Jongput, B.
    Watermeal was cultivated at six different stocking densities as 0 (control), 0.5, 1.0, 1.5, 2.0 and 2.5 g fresh weight (fw)•l<sup>-1</sup> for two weeks. Results indicated that all watermeal treatments showed optimal growth during the first week. Watermeal cultivated at 2.5 g fw•l<sup>-1</sup> revealed the highest growth performance but specific growth rate (SGR) was not significantly differed when compared to the other stocking densities. During the second week, all treatments were recorded as no growth with negative averaged fw gain and SGR. The cultivation of watermeal at 1.5 g fw•l<sup>-1</sup> showed significantly higher of total ammonia nitrogen (TAN) removal rate (6.34±0.24 %•day<sup>-1</sup>•g<sup>-1</sup>) than watermeal was cultivated at 2.5 g fw•l<sup>-1</sup> and the control treatment. The starting stocking density of watermeal at 1.5 g fw•l<sup>-1</sup> was determined the most suitable for growth and water quality treatment.