Feeding with arachidonic acid-rich triacylglycerols from the microalga Parietochloris incisa improved recovery of guppies from infection with Tetrahymena sp. Academic Article uri icon

abstract

  • Two trials were conducted to determine the effect of dietary enrichment with arachidonic acid (ARA)-rich triacylglycerols fraction, obtained from the microalga Parietochloris incisa, on the recovery of guppies, Poecilia reticulata, from infection with Tetrahymena sp. Commercial feed (0.7 mg ARA g− 1 feed) was directly enriched with the algal hexane lipid extract. Three (12.5, 25.0, 50.0 mg ARA g− 1 feed) and four (12.5, 25.0, 37.5, 50.0 mg ARA g− 1 feed) experimental diets were utilized in the first and second trials, respectively. Guppies were fed with ARA-supplemented feed for 14 days followed by infection with 1000 Tetrahymena sp. cells mL− 1. Supplemented diets significantly altered the fatty acid composition in fish body (whole body with the exception of the digestive tract and liver) and liver. The share of ARA in fatty acids of bodies and livers increased commensurately with the amount of ARA in feed …

publication date

  • January 1, 2006