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    The Potential of the Inclusion of Prosopis farcta Extract in the Diet on the Growth Performance, Immunity, Digestive Enzyme Activity, and Oxidative Status of the Common Carp, Cyprinus carpio, in Response to Ammonia Stress
    (MDPI, 2025) Yousefi, Morteza; Adineh, Hossein; Al Sulivany, Basim S. A.; Alamdari, Ebrahim Gholamalipour; Yılmaz, Sevdan; Mahboub, Heba H.; Hoseini, Seyyed Morteza
    Herbal feed additives have benefits in aquaculture, as they can improve growth performance, welfare, and stress resistance. Hence, the effects of dietary Prosopis farcta extract (PFE) on the growth parameters, digestive enzyme activity, antioxidant defense, innate immunity responses, and resistance to ammonia stress in the common carp, Cyprinus carpio, were studied. Fish (15.14 +/- 0.72 g) were fed on diets without the PFE (PFE0) or those fortified with 0.5% (PFE0.5), 1% (PFE1), or 2% (PFE2) PFE for 60 days and then subjected to ammonia stress for 24 h. The growth rate, feed efficiency, and amylase-, lipase-, and protease-specific activities in the PFE1 and PFE2 treatments showed significant elevations compared to these values in PFE0. The intestinal protease-specific activity significantly increased in all of the PFE treatments compared to that in the PFE0 treatment. Serum total protein and immunoglobulin significantly increased in the PFE1 treatment, whereas serum albumin and alternative complement activity significantly increased in the PFE2 treatment compared to these values in the PFE0 treatment. The PFE2 treatment significantly mitigated post-stress elevations in serum cortisol, glucose, malondialdehyde levels, alanine aminotransferase, and aspartate aminotransferase activities. The PFE1 treatment significantly mitigated post-stress elevations in CAT activity and decreases in SOD and lysozyme activity. In conclusion, 1-2% dietary PFE supplementation can improve the growth performance, health, and resilience to environmental stressors of the common carp.
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    The Use of Perovskia abrotanoides Extract in Ameliorating Heat Stress-Induced Oxidative Damage and Improving Growth Efficiency in Carp Juveniles (Cyprinus carpio)
    (Wiley, 2024) Adineh, Hossein; Zahedi, Saeed; Yousefi, Morteza; Sedaghat, Zeynab; Yılmaz, Sevdan; Alamdari, Ebrahim Gholamalipour; Farhangi, Mohammad
    Herbal extracts have been successfully used as feed additives in fish culture with attractive growth-promoting, immunostimulant, antimicrobial, and antioxidant properties for several fish and shellfish species. Therefore, we have designed a feeding trial to assess the impacts of dietary incorporation of Perovskia abrotanoides extract (PAE) on common carp (Cyprinus carpio). For this purpose, five isonitrogenous (35% protein) and isocaloric (similar to 4,000 kcal/kg) diets have been supplied by supplementing PAE at the varying inclusion levels as 0.0%, 0.25%, 0.5%, 1.0%, and 2.0% diets, and growth performance and feed utilization, digestive enzyme activities, serum biochemical variables, antioxidant responses, and immunological factors were studied. The experiment continued for 60 days. At the termination of the experiment, the mean final weight, weight gain percentage (WG%), feed conversion rate (FCR), and specific growth rate (SGR) have been improved significantly in all fish groups fed PAE-based diets with regard to those fed the reference diets. A second-order polynomial regression equations indicate that the optimum dietary supplementation level of PAE in fish diets was similar to 1%. Serum cortisol, glucose, triglyceride, cholesterol, and malondialdehyde levels as well as catalase, alanine aminotransferase, and aspartate aminotransferase activities were significantly decreased generally in all PAE-supplemented groups compared to the control groups before and/or after high-temperature stress (32 degrees C). Moreover, serum total protein, albumin, and total immunoglobulin levels as well as ACH50, lysozyme, superoxide dismutase, and glutathione peroxidase activities were increased before and/or after high-temperature stress (32 degrees C). In conclusion, the results showed, for the first time, that dietary supplementation with similar to 1% PAE can improve growth performance, stimulated the digestive enzymes, and enchanced antioxidant status as well as immune parameters and prevented high-temperature stress of common carp.