Is it Possible to Feed Nile Tilapia the Diets Containing Wastes of Opuntia ficus-indica?

Published on: 01/15/2021
Author/s : A.M. Abdelhamid 1, M. F. I. Salem 2 and M.A.I. Abdel Bakey 1. / 1 Animal Production Department, Faculty of Agriculture, Mansoura University, Mansoura, Dakahlia Governorate 35516, Egypt; 2 Aquaculture Research Unit, Sakha, Central Lab. of Aquaculture Research, Agricultural Research Center, Ministry of Agriculture, Cairo, Egypt.

Introduction Much information is given (Willem Van Cotthem, 2012) about Opuntia ficus-indica as an aloes. Therefore, the aim of the present study was evaluating the possibility of using powders of either fruits' skins or leaves of the Egyptian Teen Shoky as replacers for dietary corn in all-males mono-sex Nile tilapia, Oreochromis niloticus diets and their effects on fish performance for 75 days....

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Akintomide Yinka Akintomide Yinka
PhD in Veterinary (Fish) Medicine
January 15, 2021
Thanks for making your work available.
However, I have lots of questions.
1). the crude protein / energy content of your substitutes are quite different from that of the yellow maize you are replacing, so why choose the fig plant to replace maize?
2). The fish meal you used. The analysis seems questionable? At 17.1% moisture, the value is 16.3% protein?
3). Why not formulate feeds with similar CP, energy & fat content to also determine the actual effect of the plant?
4). What's your suggestion on how to remove the off-flavor effect?
Thanks!
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