Replacing the unsustainable and wild-caught fishmeal with field cricket (Gryllus bimaculatus) meal in Catla (Catla catla) fry diet: Effect for growth, in vivo digestibility, carcass composition histopathological alterations and disease tolerance

Author:

Perera G. S. Champika1,Afridin M. R.2,Adikari A. M.A.N.1,Heenatigala P. P.M.1,Maduka K. L.W.T.1,Dunusinghe S.B.K.1

Affiliation:

1. National Aquatic Resources Research and Development Agency (NARA)

2. University of Sri Jayawardenapura

Abstract

AbstractInsect meal has been identified as one of the cutting-edge alternatives to substitute fishmeal (FM) in aquafeeds. However, the potential of FM replacing with field cricket meal (FCM) related toCalta catlafry stage has yet to be researched. Therefore, an eight-week experiment was designed to evaluate the performance ofC. catlafry (0.22 ± 0.04 g/fish). The protein content of the FM of the control feed (0FCM) was replaced with 35% (35FCM), 70% (70FCM), and 100% (100FCM) of FCM. All the fish were hand-fed by respective research diets 5% of the body weight twice daily. Results showed that FCM could replace wild-caught fishmeal (67.1 % crude protein) without adversely affecting growth performance, carcass composition, liver functions, and disease tolerance. Thoughin vivoprotein digestibility significantly decreased (P<0.05) when the FCM percentage increased in the feed, it did not affect the performance of the fish. Therefore, FCM could be used to prepare fish-free feed in theC. catlafry stage. However, optimum technical know-how should be identified to certify the accessible and economically viable mass-scale production of FCM.

Publisher

Research Square Platform LLC

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