The growth of the global population has led to an increase in the demand for food, not only in quantity but also in quality. To meet this demand, intensive farming systems have been adopted, which, however, may negatively impact the welfare and health of animals. The ability to express a behavioural repertoire that closely resembles that which animals exhibit in nature represents the first step towards more sustainable farming practices. Intensive farming of fish species has significant environmental impacts. The production of feed based on fishmeal and fish oil leads to the depletion of natural resources (referred to as "forage fish"). In recent years, alternative protein sources, both animal- and plant-based, have been tested as substitutes in commercial fish diets. Insects (larvae and adults) are excellent candidates as they represent an important protein source and are part of the fish's natural diet, leaving a reduced ecological footprint. This study aims to assess the effects of feeding insect larvae (Alphitobius diaperinus, Tenebrio molitor, and Zophobas morio) on the behavioural repertoire and growth performance of the largemouth bass (Micropterus salmoides), raised in an aquaponic system.
La crescita della popolazione mondiale ha portato ad un aumento della domanda di alimenti, non solo in termini di quantità ma anche di qualità. Per poter soddisfare questa esigenza, sono stati adottati sistemi di allevamento intensivi che però possono influenzare negativamente il benessere e la salute degli animali. La possibilità di esprimere un repertorio comportamentale tanto più simile a quello che gli animali esprimono in natura, rappresenta il primo passo verso un allevamento più sostenibile. L’allevamento intensivo delle specie ittiche ha dei forti impatti sull’ambiente. La produzione di mangime a base di farina e olio di pesce porta ad un impoverimento delle risorse (“pesce foraggio”) presenti in natura. Negli ultimi anni fonti proteiche alternative, sia di origine animale che vegetale, sono state testate come sostituti nelle diete commerciali dei pesci. Gli insetti (larva e adulto) sono degli ottimi candidati in quanto rappresentano una importante fonte proteica e fanno parte della dieta naturale dei pesci, lasciando una ridotta impronta ecologica. Il presente studio mira a valutare gli effetti della somministrazione di larve di insetto (Alphitobius diaperinus, Tenebrio molitor e Zophobas morio) sul repertorio comportamentale e sulle prestazioni di accrescimento del persico trota (Micropterus salmoides), allevato in un sistema acquaponico.
Effetto dell’arricchimento alimentare con larve di insetto sul comportamento di pesci Persico Trota (Micropterus salmoides)
VIOLINO, SOFIA
2023/2024
Abstract
The growth of the global population has led to an increase in the demand for food, not only in quantity but also in quality. To meet this demand, intensive farming systems have been adopted, which, however, may negatively impact the welfare and health of animals. The ability to express a behavioural repertoire that closely resembles that which animals exhibit in nature represents the first step towards more sustainable farming practices. Intensive farming of fish species has significant environmental impacts. The production of feed based on fishmeal and fish oil leads to the depletion of natural resources (referred to as "forage fish"). In recent years, alternative protein sources, both animal- and plant-based, have been tested as substitutes in commercial fish diets. Insects (larvae and adults) are excellent candidates as they represent an important protein source and are part of the fish's natural diet, leaving a reduced ecological footprint. This study aims to assess the effects of feeding insect larvae (Alphitobius diaperinus, Tenebrio molitor, and Zophobas morio) on the behavioural repertoire and growth performance of the largemouth bass (Micropterus salmoides), raised in an aquaponic system.File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/77864