In poultry farming, environmental enrichment is a crucial tool for improving animal welfare, as it fosters the expression of species-specific behaviors while simultaneously helping to reduce stress and the occurrence of harmful aggressive behaviors. Against this backdrop, this experimental study aimed to evaluate the effects of dietary supplementation acting as a form of enrichment with live Hermetia illu-cens larvae on the behavior of chickens from both fast- and slow-growing genetic lines. The trial was conducted at the CREA experimental facility for broiler chickens and involved 498 male birds com-prising 325 Ross 308 broilers and 173 Aviagen Rustic Savanna birds reared to 42 and 60 days of age, respectively, and distributed across 12 pens. For each genotype, the animals were divided into two experimental groups: a control group fed a standard diet and a treatment group whose diet was sup-plemented with 10% live Hermetia illucens larvae. These larvae were distributed daily onto the litter to stimulate exploratory and foraging behaviors. Animal behavior was video-recorded once a week using a camera system focused on the floor litter area where the larvae were provided. Subsequently, the first 15 seconds of footage from every half-hour between 8:00 AM and 7:00 PM (at the :00 and :30 marks of each hour) were analyzed.
Nell’ambito dell’allevamento avicolo, gli arricchimenti ambientali rappresentano uno strumento fondamentale per il miglioramento del benessere animale, poiché favoriscono l’espressione di comportamenti specie specifici e, al contempo, contribuiscono a ridurre lo stress e l’insorgenza di comportamenti aggressivi dannosi. In questo contesto, la presente tesi sperimentale è stata condotta con l’obiettivo di valutare gli effetti dell’integrazione alimentare, intesa come arricchimento, con larve vive di Hermetia illucens sul comportamento di polli appartenenti a linee genetiche a rapido e lento accrescimento. La prova sperimentale, condotta presso lo stabulario sperimentale per polli da carne del CREA, ha coinvolto 498 polli maschi, di cui 325 broiler Ross 308 e 173 Aviagen Rustic Savanna, allevati rispettivamente fino a 42 e 60 giorni di età e distribuiti in 12 recinti. Per ciascun genotipo, gli animali sono stati suddivisi in due gruppi sperimentali: un gruppo controllo alimentato con una dieta standard e un gruppo trattato la cui dieta è stata integrata con il 10% di larve vive di Hermetia illucens, distribuite quotidianamente sulla lettiera per stimolare l'attività esplorativa e di foraggiamento. Il comportamento degli animali è stato videoregistrato 1 volta a settimana grazie ad un sistema di telecamere che inquadrava l’area di lettiera a terra, dove venivano somministrate le larve. Successivamente, delle videoregistrazioni sono stati esaminati i primi 15 secondi ogni mezz’ora, dalle ore 8.00 del mattino sino alle 19.00 (alle :00 ed alle :30 di ogni ora).
Arricchimento con larve vive di Hermetia Illucens in polli da carne a lento e rapido accrescimento: prestazioni produttive e comportamento
NICOLI, AURORA
2025/2026
Abstract
In poultry farming, environmental enrichment is a crucial tool for improving animal welfare, as it fosters the expression of species-specific behaviors while simultaneously helping to reduce stress and the occurrence of harmful aggressive behaviors. Against this backdrop, this experimental study aimed to evaluate the effects of dietary supplementation acting as a form of enrichment with live Hermetia illu-cens larvae on the behavior of chickens from both fast- and slow-growing genetic lines. The trial was conducted at the CREA experimental facility for broiler chickens and involved 498 male birds com-prising 325 Ross 308 broilers and 173 Aviagen Rustic Savanna birds reared to 42 and 60 days of age, respectively, and distributed across 12 pens. For each genotype, the animals were divided into two experimental groups: a control group fed a standard diet and a treatment group whose diet was sup-plemented with 10% live Hermetia illucens larvae. These larvae were distributed daily onto the litter to stimulate exploratory and foraging behaviors. Animal behavior was video-recorded once a week using a camera system focused on the floor litter area where the larvae were provided. Subsequently, the first 15 seconds of footage from every half-hour between 8:00 AM and 7:00 PM (at the :00 and :30 marks of each hour) were analyzed.| File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/114359