Growth and Welfare of Rainbow Trout (<i>Oncorhynchus mykiss</i>) in Response to Graded Levels of Insect and Poultry By-Product Meals in Fishmeal-Free Diets
Gloriana Cardinaletti,
Patrizia Di Marco,
Enrico Daniso,
Maria Messina,
Valeria Donadelli,
Maria Grazia Finoia,
Tommaso Petochi,
Francesca Fava,
Filippo Faccenda,
Michela Contò,
Roberto Cerri,
Donatella Volpatti,
Chiara Bulfon,
Alberta Mandich,
Alessandro Longobardi,
Giovanna Marino,
Lina Fernanda Pulido-Rodriguez,
Giuliana Parisi,
Emilio Tibaldi
Affiliations
Gloriana Cardinaletti
Department of Agricultural, Food, Environmental and Animal Sciences (Di4A), University of Udine, 33100 Udine, Italy
Patrizia Di Marco
Italian National Institute for Environmental Protection and Research (ISPRA), 00144 Rome, Italy
Enrico Daniso
Department of Agricultural, Food, Environmental and Animal Sciences (Di4A), University of Udine, 33100 Udine, Italy
Maria Messina
Department of Agricultural, Food, Environmental and Animal Sciences (Di4A), University of Udine, 33100 Udine, Italy
Valeria Donadelli
Italian National Institute for Environmental Protection and Research (ISPRA), 00144 Rome, Italy
Maria Grazia Finoia
Italian National Institute for Environmental Protection and Research (ISPRA), 00144 Rome, Italy
Tommaso Petochi
Italian National Institute for Environmental Protection and Research (ISPRA), 00144 Rome, Italy
Francesca Fava
Foundation Edmund Mach, Technology Transfer Centre, San Michele all’Adige, 38010 Trento, Italy
Filippo Faccenda
Foundation Edmund Mach, Technology Transfer Centre, San Michele all’Adige, 38010 Trento, Italy
Michela Contò
Consiglio per la ricerca in Agricoltura e l’Analisi dell’Economia Agraria, Centro di Ricerca di Zootecnia e Aquacoltura, Monterotondo, 00015 Roma, Italy
Roberto Cerri
Department of Agricultural, Food, Environmental and Animal Sciences (Di4A), University of Udine, 33100 Udine, Italy
Donatella Volpatti
Department of Agricultural, Food, Environmental and Animal Sciences (Di4A), University of Udine, 33100 Udine, Italy
Chiara Bulfon
Department of Agricultural, Food, Environmental and Animal Sciences (Di4A), University of Udine, 33100 Udine, Italy
Alberta Mandich
Italian National Institute for Environmental Protection and Research (ISPRA), 00144 Rome, Italy
Alessandro Longobardi
Italian National Institute for Environmental Protection and Research (ISPRA), 00144 Rome, Italy
Giovanna Marino
Italian National Institute for Environmental Protection and Research (ISPRA), 00144 Rome, Italy
Lina Fernanda Pulido-Rodriguez
Department of Agriculture, Food, Environment and Forestry (DAGRI), University of Firenze, 50144 Firenze, Italy
Giuliana Parisi
Department of Agriculture, Food, Environment and Forestry (DAGRI), University of Firenze, 50144 Firenze, Italy
Emilio Tibaldi
Department of Agricultural, Food, Environmental and Animal Sciences (Di4A), University of Udine, 33100 Udine, Italy
This study compared the nutrient-energy retention, digestive function, growth performance, and welfare of rainbow trout (ibw 54 g) fed isoproteic (42%), isolipidic (24%), fishmeal-free diets (CV) over 13 weeks. The diets consisted of plant-protein replacement with graded levels (10, 30, 60%) of protein from poultry by-product (PBM) and black soldier fly H. illucens pupae (BSFM) meals, either singly or in combination. A fishmeal-based diet was also tested (CF). Nitrogen retention improved with moderate or high levels of dietary PBM and BSFM relative to CV (p p p p < 0.05). In conclusion, moderate to high PBM and BSFM inclusions in fishmeal-free diets, either singly or in combination, improved gut function and nutrient retention, resulting in better growth performance and the good welfare of the rainbow trout.
