کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8498480 | 1553598 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Immune defense of emodin enriched diet in Clarias batrachus against Aeromonas hydrophila
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم آبزیان
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This study investigates the effect of emodin enriched diet on growth, hematology, and immune response in walking catfish, Clarias batrachus against Aeromonas hydrophila. The basal (control) diet supplemented with emodin at 0.0, 0.1, 0.2, or 0.4â¯gâ¯kgâ1 was fed to the experimental groups for a period of four weeks. Feeding infected fish with 0.2â¯gâ¯kgâ1 and 0.4â¯gâ¯kgâ1 emodin enriched diets resulted in an overall weight gain, enhanced PER and FCR when compared to other diets. The survival rates were 98.3% and 96.7% in 0.1â¯gâ¯kgâ1 and 0.4â¯gâ¯kgâ1 emodin diet fed groups. Feeding with 0.2â¯gâ¯kgâ1 diet the RBC level significantly elevated on week 1 and with 0.4â¯gâ¯kgâ1 diet on weeks 2 and 4. The WBC, the percentage of globulin and neutrophils increased significantly with 0.2â¯gâ¯kgâ1 diet only on week 4; however with 0.4â¯gâ¯kgâ1 diet the increase was observed from week 1-4. The phagocytic activity increased significantly on being fed with 0.4â¯gâ¯kgâ1 diet on week 2 while with 0.2â¯gâ¯kgâ1 and 0.4â¯gâ¯kgâ1 diets the increase manifested only on week 4; the respiratory burst activity also significantly increased on week 4 whereas increased the complement activity on weeks 2 and 4. The superoxide dismutase (SOD) activity was high on being fed with 0.4â¯gâ¯kgâ1 diet on week 1; with 0.2â¯gâ¯kgâ1 or 0.4â¯gâ¯kgâ1 diets the increase was observed on weeks 2 and 4. The serum IgM level significantly increased when fed with 0.4â¯gâ¯kgâ1 diet whereas the lysozyme activity was enhanced with 0.2â¯gâ¯kgâ1 and 0.4â¯gâ¯kgâ1 emodin diets on weeks 2 and 4. The percentage cumulative mortality was 10% with 0.1â¯gâ¯kgâ1 or 0.2â¯gâ¯kgâ1 diets while with 0.2â¯gâ¯kgâ1 diet it was 15%. The results demonstrate that as a feed additive emodin acts as an immunostimulant enhancing the specific and nonspecific immune defense affording increased disease protection, enhances better growth and boosts hematology parameters in C. batrachus against A. hydrophila infection.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fish & Shellfish Immunology - Volume 76, May 2018, Pages 13-20
Journal: Fish & Shellfish Immunology - Volume 76, May 2018, Pages 13-20
نویسندگان
Ramasamy Harikrishnan, Sundaram Jawahar, Subramanian Thamizharasan, Bilal Ahmad Paray, Mohammad K. Al-Sadoon, Chellam Balasundaram,