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Effects of the Probiotic Saccharomyces cerevisiae on Hematological Parameters, Survival Rate, and Salinity Tolerance in Juvenile Koi Carp (Cyprinus carpio L.)
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Seyedeh zahra Sadat *   , Mohammadreza Imanpour , Roghieh Safari |
| Gorgan University of Agricultural |
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Abstract: (129 Views) |
| This study evaluated the effects of dietary supplementation with the probiotic Saccharomyces cerevisiae on hematological parameters, survival, and salinity tolerance in juvenile koi carp (Cyprinus carpio L.). A total of 132 fish with uniform initial weights were fed experimental diets containing different inclusion levels of the probiotic (0, 0.1, 0.5, and 1%) for eight weeks following an adaptation period. At the end of the trial, blood indices including red and white blood cell counts, hemoglobin concentration, and hematocrit were measured. Subsequently, fish were exposed to saline conditions (12 g/L NaCl) to evaluate survival and resistance. Results revealed that supplementation with S. cerevisiae significantly increased red and white blood cell counts, hemoglobin concentration, and hematocrit (P < 0.05), indicating improved health status and physiological performance. Furthermore, under saline stress, probiotic-fed groups exhibited a higher survival rate compared to the control. These findings suggest that dietary inclusion of S. cerevisiae can enhance hematological indices, promote resilience against environmental stressors such as salinity, and improve overall fish performance in koi carp aquaculture. |
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| Keywords: Probiotic, Saccharomyces cerevisiae, Hematological parameters, Juvenile koi carp |
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Full-Text [PDF 709 kb]
(48 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2025/05/12 | Accepted: 2025/10/2 | Published: 2025/09/7
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