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    Tytuł:
    Immune performances of sangkuriang catfish (Clarias gariepinus) with addition of potassium diformate on feed
    Autorzy:
    Yustiati, Ayi
    Nadiyah, Naila Amalia
    Suryadi, Ibnu Bangkit Bioshina
    Rosidah, Rosidah
    Powiązania:
    https://bibliotekanauki.pl/articles/1076683.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Aeromonas hydrophila
    Clarias gariepinus
    Immune
    Potassium Diformate
    Opis:
    This research aims to determine the effective dosage of potassium diformate (KDF) in feed to enhance sangkuriang catfish immune performances. The research was conducted on November - January 2019, at Aquaculture Laboratory Building No. 4 Faculty of Fisheries and Marine Sciences Universitas Padjadjaran. This study used an experimental method of Completely Randomized Design (CRD), with four treatments and three replications. The treatments are the addition of potassium diformate into feed with doses A (0%), B (0.5%), C (0.7%) and D (0.9%). Observed parameters are clinical symptoms, total leukocyte count, total erythrocyte count, specific growth rate, survival rate and water quality. The results showed that 0.5% KDF feed produced the highest survival rate of 85% and the highest specific growth rate of 3.59% after 40 days. Furthermore, due to treatment, total erythrocyte count increased from 2.09×106 cells/mm3, to 2.10×106 cells/mm3 (8.1%) and total leukocyte count increased from 7.1×104 cells/mm3, to 10.7×104 cells/mm3 (42.81%). The addition of 0.5% KDF in feed is effective in improving the immune performances of sangkuriang catfish challenged by A. hydrophila, with the highest survival rate of 97%. Moreover, recovery of total leukocyte count and total erythrocyte count was faster than other treatments as of day 7th, with a value 1.97×106 sel/mm3and 12.60×104 sel/mm3. It also resulted in the lowest gross clinical signs and the fastest recovering.
    Źródło:
    World News of Natural Sciences; 2019, 25; 113-129
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Potassium Diformate Addition to the Growth Rate and the Activity of Protease Enzyme of Giant Gourami Fingerlings (Osphronemus goramy Lacepede, 1801)
    Autorzy:
    Yustiati, Ayi
    Nugraha, Algi Azmi
    Bioshina, Ibnu Bangkit
    Andriani, Yuli
    Powiązania:
    https://bibliotekanauki.pl/articles/1031523.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Osphronemus goramy
    giant gourami
    growth
    potassium diformate
    protease enzyme
    Opis:
    This research aims to investigate the effect of adding potassium diformate to commercial feed on the increase of absolute growth rate and the activity of protease enzyme. The research was conducted from July to October 2019 in the Aquaculture Laboratory Faculty of Fisheries and Marine Sciences, Padjadjaran University. The method applied in this research was an experimental method using a Completely Randomized Design (CRD), which consists of four treatments and four replications. The treatments were: (A) without addition of Potassium diformate (control), (B) addition of Potassium diformate by 0.3%, (C) addition of Potassium diformate by 0.5%, and (D) addition Potassium diformate by 0.8%. The test fish were 300 giant gouramis with 4-6 cm in length. The containers used in this research were 16 rearing aquaria with a size of 40 30 40 cm3. The density of studied giant gourami fingerlings was 10 fish per aquarium. The rearing period was 40 days. The feeding rate was 3% from biomass. Water quality parameters (temperature, pH, and dissolved oxygen), the absolute growth rate, feed conversation ratio and survival rate were observed every 10 days. The protease enzyme activities were observed at the end of the research. Data on the absolute growth rate, feeding conversion ratio, the characteristics of protease enzyme and survival rate were analyzed using the Analysis of Variance (ANNOVA) continued with Duncan’s Multiple Range Test at the level of 95%, while the water quality was analyzed descriptively. The results show that the addition of potassium diformate by 0.3% gave the best result with the absolute growth rate of 1.50%, feed conversion ratio of 2.70, protease enzyme activity by 634.2 μ/mL and survival rate of 100%.
    Źródło:
    World News of Natural Sciences; 2020, 32; 74-86
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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