Details

Autor(en) / Beteiligte

• Mbokane, Esau Matthews
• Fouche, Chris Henry

Titel

The potential use of acid fermented one-day old male chick meat in Oreochromis mossambicus diets - Its effect on growth performance, digestive enzymes and gut health

Ist Teil von

• Aquaculture, 2022-05, Vol.554, p.738110, Article 738110

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2022

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The main objective of this study was to evaluate the effect of replacing fishmeal with acid fermented chick meat on growth performance, activities of digestive enzymes and histology in Oreochromis mossambicus. Five diets were formulated to replace fishmeal at 0% (control) 25%, 50%, 75% and 100% with the fermented chick meat. The diets were designated D1, D2, D3, D4 and D5. Each diet was fed to triplicate groups of fish, stocked in 400 L fiberglass tanks at 50 fish per tank, for 8 weeks. Two separate groups of fish were each fed with the silage and a commercial diet to serve as a reference diet. Weight gain, specific growth rate and fish intake increased significantly (P < 0.05) with higher silage inclusion levels. Fish fed with D4 and D5 had the lowest feed conversion ratio values than fish fed with the control and the lowest silage inclusion levels (D2 and D3). Fish fed with the highest silage inclusion levels had significantly higher (P < 0.05) apparent protein digestibility values when compared to the control and D2-D3. Activities of digestive enzymes (protease, amylase and lipase) were significantly higher (P < 0.05) in fish fed with D4 and D5. The best growth performance in terms of WG, FCR and SGR was recorded in fish fed with the silage and reference diet. Fish fed with silage only had higher activities of digestive enzymes than the other diets. No histological alterations were detected in the intestines and liver among diets. This study showed that the chick meat silage could be used as a substitute for fishmeal without adversely affecting the health of the fish. •The potential use of acid fermented one-day old chick meat in Oreochromis mossambicus diets is assessed.•Proximate analyses revealed that chick meat has a high nutritional value (protein, carbohydrates and fat).•Findings showed increased growth performance in fish fed with fermented chick silage.•There was an increase in digestive enzyme activity in the fish fed with silage inclusion levels.•The fermented silage had no noticeable effect on liver and gut histology.