| Autor: |
Hoseinifar, Seyed Hossein, Hoseini, Seyyed Morteza, Mirghaed, Ali Taheri, Ghelichpour, Melika, Shirzad-Aski, Hesamaddin, Van Doan, Hien, El-Haroun, Ehab, Safari, Roghieh, Khanzadeh, Majid |
| Předmět: |
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| Zdroj: |
Frontiers in Marine Science; 2024, p1-16, 16p |
| Abstrakt: |
Probiotics are helpful bacteria that safeguard host animals from harmful pathogens. In fish farming, the primary aim of using probiotics is to preserve or reestablish a balance between pathogenic microorganisms and the native bacteria that constitute the intestinal and skin microbial communities of fish. This study investigates the effects of host-associated probiotic (HAP) vs commercial probiotic (CP) on the growth performance, antioxidant defense and immunity of Caspian whitefish fry. Three hundred whitefish fry (1.15 ± 0.03 g) were randomly divided into five treatments in triplicate. Treatments included feeding with the control group (zero), P. acidilactici as a commercial probiotic (CP) at 6 × 108 CFU g -1, and HA Pediococcus pentosaceus at 106, 107 and 108 CFU g-1 for eight weeks. Dietary HAP and CP did not have significant effects on growth indices compared to the control group (P > 0.05). However, HAP at 107 and 108 CFU g-1 and CP significantly increased protein in whitefish carcasses compared to the control group (P < 0.05). Different levels of HAP and CP had a significant effect on whole-body extract (WBE) lysozyme (LZM) activity (P < 0.05). HAP treatment significantly increased WBE ACH50 and bactericidal activity compared to the control and CP group (P < 0.05). Also, in the case of mucosal immune response, different levels of HAP could significantly increase LZM, total immunoglobulin (Ig), agglutination titer, protease and alkaline phosphatase activity compared to the control group (P < 0.05). Whitefish fed HAP showed a significant increase in the activity of WBE antioxidant parameters (SOD, CAT and GPx) compared to the control group (P < 0.05). Also, feeding with HAP could significantly increase autochthonous LAB levels compared control group (P < 0.05); while the total count of intestinal heterotrophic bacteria was not affected (P > 0.05). Overall, the present study showed HA Pediococcus pentosaceus can be considered as beneficial feed additive for whitefish. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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