This study aims to evaluate the effects on slaughter performance of medium-growing chickens fed live insect larvae. A total of 240 Label Naked Neck chickens were reared from 21 to 82 d of age. The birds were split according to gender and dietary treatment in 4 experimental groups (6 replicate/treatment, 10 birds/pen). The treated groups received 10% supplementation (of the expected daily feed intake) of black soldier fly larvae. At 82 d of age, 2 birds/pen (12 birds/treatment) were selected on the basis of the pen average body weight (BW) and slaughtered. The ready-to-cook carcass weight (RTCCW) was recorded. The weight of the heart, spleen, bursa of Fabricius (BF), liver, gut, and stomachs were collected (%BW). After 24h of refrigeration (4 °C) the chilled carcass weight (CCW) was recorded. The carcass yields (%BW), breast yields (ÌW), thigh yields (ÌW), water losses (WL) (%RTCC-CC, 24 h after slaughter) were calculated. The pH and colour (after 24 h at 4 °C) of breast and thigh meat were registered. Data were analysed using a GLMM (P<0.05). The spleen weight was higher in both treated groups than controls (P<0.01), attributable to larvae immune activity. Treated females showed a higher BF weight than control females (P<0.05). Moreover, treated birds revealed a higher absolute heart weight than control ones (P<0.05). Finally, WL were lower in females fed larvae than control (P<0.01). In conclusion, live larvae may be safely used in medium-growing chickens feeding programs and may exert the stimulation of immune system.

Slaughtering performance of medium-growing chicken fed black soldier fly live larvae

V. Bongiorno;M. Gariglio;V. Zambotto;E. Cappone;I. Biasato;D. Soglia;C. Forte;M. Renna;L. Gasco;A. Schiavone
2022-01-01

Abstract

This study aims to evaluate the effects on slaughter performance of medium-growing chickens fed live insect larvae. A total of 240 Label Naked Neck chickens were reared from 21 to 82 d of age. The birds were split according to gender and dietary treatment in 4 experimental groups (6 replicate/treatment, 10 birds/pen). The treated groups received 10% supplementation (of the expected daily feed intake) of black soldier fly larvae. At 82 d of age, 2 birds/pen (12 birds/treatment) were selected on the basis of the pen average body weight (BW) and slaughtered. The ready-to-cook carcass weight (RTCCW) was recorded. The weight of the heart, spleen, bursa of Fabricius (BF), liver, gut, and stomachs were collected (%BW). After 24h of refrigeration (4 °C) the chilled carcass weight (CCW) was recorded. The carcass yields (%BW), breast yields (ÌW), thigh yields (ÌW), water losses (WL) (%RTCC-CC, 24 h after slaughter) were calculated. The pH and colour (after 24 h at 4 °C) of breast and thigh meat were registered. Data were analysed using a GLMM (P<0.05). The spleen weight was higher in both treated groups than controls (P<0.01), attributable to larvae immune activity. Treated females showed a higher BF weight than control females (P<0.05). Moreover, treated birds revealed a higher absolute heart weight than control ones (P<0.05). Finally, WL were lower in females fed larvae than control (P<0.01). In conclusion, live larvae may be safely used in medium-growing chickens feeding programs and may exert the stimulation of immune system.
2022
Insects to Feed the World
Quebec City
12-16 giugno 2022
S34
S34
V. Bongiorno, M. Gariglio, V. Zambotto, E. Cappone, I. Biasato, S.B. Oddon, N. Kalkan, D. Soglia, C. Forte, M. Renna, L. Gasco, F. Gai, C. Coudron, A....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1888468
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