EFFECT OF DIETARY LINOLEIC ACID LEVEL ON GROWTH, FOOD CONVERSION AND SURVIVAL OF CHANNEL CATFISH Academic Article uri icon

abstract

  • Semipurified diets containing 2.0 to 2.5% highly purified linoleic acid as the only dietary lipid produced similar growth responses in channel catfish fingerlings fed experimental diets for 14 weeks. Poorest growth was demonstrated by fish on a fatfree diet and a diet which contained 4.0% linoleic acid, but growth on those diets was not significantly different (p > 0.05) from that obtained on diets containing 3.0 or 3.5% linoleic acid. Best food conversion (1.9 g of feed offered/g of weight gain) was associated with the diet containing 2.5% linoleic acid and poorest (2.6) occurred in fish which received 4.0% linoleic acid. Survival was highest (100%) in fish fed 2.0% linoleic acid and decreased linearly with increasing dietary linoleic acid level. The results of this study support the theory that poor growth of channel catfish on diets high in vegetable oils cannot be solely attributed to high levels of dietary linoleic acid. 1984 World Aquaculture Society

published proceedings

  • Journal of the World Aquaculture Society

author list (cited authors)

  • Stickney, R. R., McGeachin, R. B., & Robinson, E. H.

citation count

  • 5

complete list of authors

  • Stickney, Robert R||McGeachin, Robert B||Robinson, Edwin H

publication date

  • January 1984

publisher