Abstract
The use of the term “Unidentified Growth Factors” (UGF) dates back to around 1920, but most research work started from 1950 onwards[(16)]. They were identified in fish extract, fish meal, fermentation products and their residues and lucerne (alfalfa) meal. Particularly good sources of UGF are de-hydrated fish solubles (see chapter 21) and distillers’ feeds (see chapter 13)([4], [5], [6], [12], [14]). Squid might also be a source of UGF since there is no explanation for good performances of shrimps when added to the diet[(8)].
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Hertrampf, J.W., Piedad-Pascual, F. (2000). Unidentified Growth Factors. In: Handbook on Ingredients for Aquaculture Feeds. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4018-8_44
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DOI: https://doi.org/10.1007/978-94-011-4018-8_44
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