The use of food wastes as feed ingredients for culturing grass carp (Ctenopharyngodon idellus) in Hong Kong

Wai Ming CHOI, Cheung Lung LAM, Wing Yin MO, Ming Hung WONG

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Different types of food wastes, e.g., meats, bones, cereals, fruits, and vegetables, were collected from hotels in Hong Kong, mixed in different ratio, and processed into feed pellets (food wastes (FWs) A, B, and C) for feeding trials in aquaculture species. Grass carp fed with cereal-dominant feed (FW A) showed the best growth (in terms of specific growth rate, relative weight gain, and protein efficiency ratio), among all food waste feeds. However, the growth rates of food waste groups especially the meat product-contained feeds (FW B and FW C) were lower than the commercial feed, Jinfeng® 613 formulation (control). The results indicated that grass carp utilized plant proteins better than animal proteins and preferred carbohydrate as a major energy source than lipid. The high-lipid content in feed containing meat products was also a possible reason for hindering growth and resulted high body lipid. It is suggested that lipid should be removed in the preparation of food waste feed or further investigations by implementing supplements, e.g., enzymes in feed to enhance lipid or protein utilization by fish. This utilization of food waste could be an effective and practical way to deal with these wastes in this densely populated city. Copyright © 2015 Springer-Verlag Berlin Heidelberg.
Original languageEnglish
Pages (from-to)7178-7185
JournalEnvironmental Science and Pollution Research
Volume23
Issue number8
Early online dateOct 2015
DOIs
Publication statusPublished - 2016

Citation

Choi, W. M., Lam, C. L., Mo, W. Y., & Wong, M. H. (2016). The use of food wastes as feed ingredients for culturing grass carp (Ctenopharyngodon idellus) in Hong Kong. Environmental Science and Pollution Research, 23(8), 7178-7185.

Keywords

  • Grass carp
  • Food waste
  • Protein solubility
  • Lipid utilization
  • Feed digestibility
  • Aquaculture

Fingerprint Dive into the research topics of 'The use of food wastes as feed ingredients for culturing grass carp (Ctenopharyngodon idellus) in Hong Kong'. Together they form a unique fingerprint.