Impact assessment of some mineral feed additives on O.niloticus with special reference to potential effect on the immunological status and fish tissue quality | ||
Egyptian Journal of Animal Health | ||
Volume 5, Issue 3, July 2025, Pages 141-155 PDF (513.7 K) | ||
Document Type: Original researches | ||
DOI: 10.21608/ejah.2025.456919 | ||
Abstract | ||
This study evaluated the addition of functional minerals as feed additives for Nile tilapia (Oreochromis niloticus). These minerals include calcium, phosphorus, magnesium, sodium and potassium and certain trace elements (iodine, iron, manganese and zinc) to enhance fish immunity and fish quality. Three groups (triple /group) experimented for 30 days provided a balanced commercial diet amounting to 3% of their body weight daily. These groups control, G2: fed with 20g/kg of feed additive to regular ration while G3: fed with 40g/kg of feed additive to regular ration. The study indicated immunologically, lysozyme activity and a significant up regulation of IL-10 gene expression were noticed. Meat safety parameters showed lower bacterial loads, with no detection of Salmonella, Listeria, or Staphylococcus aureus. Meanwhile, chemical indicators for freshness, including histamine, total volatile basic nitrogen (TVB-N), and thiobarbituric acid (TBA), remained within acceptable levels. Furthermore, the meat quality of treated fish exhibited improved protein content and reduced moisture, thus enhancing both meat freshness and nutritional values which make it a preferred choice among consumers. | ||
Keywords | ||
Nile tilapia; Mineral feed additive; Immunity; Meat quality | ||
Full Text | ||
Impact assessment of some mineral feed additives on O.niloticus with special reference to potential effect on the immunological status and fish tissue quality Jehan, I. Abdellatief* and Asmaa, E. Hassan**
*Fish diseases department **Reference Lab for Safety Analysis of Food of Animal Origin, Animal Health Research Institute (AHRI) 12618, Agricultural Research Center (ARC), Giza, Egypt. ABSTRACT: This study evaluated the addition of functional minerals as feed additives for Nile tilapia (Oreochromis niloticus). These minerals include calcium, phosphorus, magnesium, sodium and potassium and certain trace elements (iodine, iron, manganese and zinc) to enhance fish immunity and fish quality. Three groups (triple /group) experimented for 30 days provided a balanced commercial diet amounting to 3% of their body weight daily. These groups control, G2: fed with 20g/kg of feed additive to regular ration while G3: fed with 40g/kg of feed additive to regular ration. The study indicated immunologically, lysozyme activity and a significant up regulation of IL-10 gene expression were noticed. Meat safety parameters showed lower bacterial loads, with no detection of Salmonella, Listeria, or Staphylococcus aureus. Meanwhile, chemical indicators for freshness, including histamine, total volatile basic nitrogen (TVB-N), and thiobarbituric acid (TBA), remained within acceptable levels. Furthermore, the meat quality of treated fish exhibited improved protein content and reduced moisture, thus enhancing both meat freshness and nutritional values which make it a preferred choice among consumers.
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