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Fernández-Alacid L, Sanahuja I, Madrid C, Polo J, Firmino JP, Balsalobre C, Reyes-López FE, Vallejos-Vidal E, Andree KB, Gisbert E, Ibarz A. Evaluating the Functional Properties of Spray-Dried Porcine Plasma in Gilthead Seabream ( Sparus aurata) Fed Low Fish Meal Diets. Animals (Basel) 2022; 12:ani12233297. [PMID: 36496818 PMCID: PMC9740897 DOI: 10.3390/ani12233297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/18/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022] Open
Abstract
Blood by-products are an untapped source of high-quality ingredients for aquafeeds, containing a broad variety of cytokines, hormones, growth factors, proteins, bioactive peptides, and amino acids. The effects of the spray-dried porcine plasma (SDPP), a type of processed animal protein on several immune parameters, were evaluated in sea bream using ex vivo and in vitro assays. In this study, fish were fed with two isoproteic, isolipidic, and isoenergetic diets: control diet (7% fish meal, FM) and SDPP diet (2% FM and 5% SDPP). At the end of the 92-days trial, those fed the SDPP diet were larger in body weight (p < 0.05) without differences in feed conversion ratio (p > 0.05). The ex vivo immune stimulation of splenocytes indicated that SDPP had a beneficial effect in promoting systemic immunity, since the surface cell marker (cd4), pro- (il-1β), and anti-inflammatory (tgf-β1) cytokines, and genes involved in humoral immunity (IgM) were up-regulated. The co-culture assays of skin mucus corroborated that SDPP enhanced the antibacterial capacity of mucus against V. anguillarum. In addition, main mucus biomarkers did not show significant differences, except for cortisol levels which were lower in the SDPP diet. The present study indicated that SDPP may be considered a functional ingredient in aquafeeds formulated with low FM levels.
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Affiliation(s)
- Laura Fernández-Alacid
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Avda. Diagonal 643, 08028 Barcelona, Spain
| | - Ignasi Sanahuja
- IRTA, Centre de La Ràpita, Aquaculture Program, 43540 La Ràpita, Spain
| | - Cristina Madrid
- Department of Genetics, Microbiology and Statistics, Faculty of Biology, University of Barcelona, Avda. Diagonal 643, 08028 Barcelona, Spain
| | - Javier Polo
- APC Europe SL, Avda. Sant Julià 246-258, 08403 Granollers, Spain
| | - Joana P. Firmino
- IRTA, Centre de La Ràpita, Aquaculture Program, 43540 La Ràpita, Spain
| | - Carlos Balsalobre
- Department of Genetics, Microbiology and Statistics, Faculty of Biology, University of Barcelona, Avda. Diagonal 643, 08028 Barcelona, Spain
| | - Felipe E. Reyes-López
- Fish Health and Integrative Physiogenomics Research Team, Center of Biotechnology and Aquaculture, Faculty of Chemistry and Biology, University of Santiago de Chile, 9170002 Santiago, Chile
| | - Eva Vallejos-Vidal
- Núcleo de Investigación Aplicada en Ciencias Veterinarias y Agronómicas, Facultad de Medicina Veterinaria y Agronomía, Universidad de Las Américas, 8242125 Santiago, Chile
| | - Karl B. Andree
- IRTA, Centre de La Ràpita, Aquaculture Program, 43540 La Ràpita, Spain
| | - Enric Gisbert
- IRTA, Centre de La Ràpita, Aquaculture Program, 43540 La Ràpita, Spain
- Correspondence:
| | - Antoni Ibarz
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Avda. Diagonal 643, 08028 Barcelona, Spain
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