Fronte Baldassare

#acquacoltura #verticalfarming

Ricercatore, Dipartimento di Scienze veterinarie, Università di Pisa


Lievito autolisato e nutrizione dell’orata (Sparus aurata): effetti sulle performance di accrescimento e la morfologia intestinale

Baldassare Frontea, Francesca Abramoa, Fabio Brambillab, Mahanama De Zoysac, Vincenzo Miragliottaa

a Department of Veterinary Sciences, University of Pisa, viale delle Piagge 2, 56124 – Pisa

b VRM srl Naturalleva, Verona, Italy.

c Chungnam National University, College of Veterinary Medicine and Research Institute of Veterinary Medicine, Daejeon, South Korea.

The aim of the present project was to evaluate the suitability of an autolyzed yeast (S. cerevisiae – HiCell®, Biorigin©, San Paolo – Brazil) to replace fish meal, and its derivatives, in gilthead sea breams (Sparus aurata) diet. To this purpose, 720 individuals (initial BW 122.2 ± 6.23 g; m±sd) were allocated to 3 experimental groups (3 replicates each) for a total of 90 days. The experimental diets were obtained replacing 5% fish meal (50 kg/t of feed) of the basic control diets, with the same amount of autolyzed yeast or hydrolyzed fish meal, respectively.

The effects of the different diets were evaluated on the base of mortality incidence, individuals growth performances and gut traits characterization.

At the end of the experimental period, all the considered groups (fish meal, hydrolyzed fish meal and autolyzed yeast) doubled their initial BW and no statistically significant differences were observed both in relation to growth performance and mortality incidence. For a contrary, goblet cell density was enhanced when the individuals were fed either hydrolyzed fish protein or autolyzed yeast; moreover, villus branching, intraepithelial lymphocytes and eosinophilic infiltration of the submucosa, as well as the gut absorbent surface ratio, were more prominent in the sea bream group fed autolyzed yeast.

In conclusion, considering the measured parameters, it is possible to suggest autolyzed yeast as fish meal and fish meal derivatives replacer in diets for gilthead sea bream.

Baldassare FRONTE e Yuri GALLETTI



Integrazione completa di un sistema acquaponico per la produzione locale e sostenibile di alimenti

Baldassare Fronte1, Luca Incrocci2, Yuri Galletti3, Alberto Pardossi2, Carlo Bibbiani1

1 Dipartimento di Scienze Veterinarie, Università di Pisa, viale delle Piagge 2, 56124 – Pisa

2 Dipartimento di Scienze Agrarie, Alimentari e Agro-ambientali, Università di Pisa, via del borghetto 80, 56124 – Pisa

3 Free lance

Aquaponic system or Integrated Aquaculture System (IAS) consist in a “virtuous” biological loop that rely on: a) the bacteria nitrification of fish excreted ammonia (or resulting from uneaten feed and faeces) into nitrite and nitrate; b) the plant absorption and use of nitrate for their growth and production (leaves and fruits) c) the re-use of the “purified” water, back for fish rearing. In practice, an IAS allows to obtain from one input (feed) only, two different crops (fish and plant products). Advantages of this system can be briefly summarized in a very low carbon footprint and high “sustainability rate”.

The IAS sustainability may be further increased by replacing a part of commercial feed used for the fish with insects (high quality protein food) that could be grown locally using plant wastes.

The concept above described will be briefly discussed.

Curriculum Vitae

Certificato di internazionalità


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