Zinc supplementation of practical channel catfish diets Academic Article

abstract

• A 10-week feeding trial was conducted with fingerling channel catfish (Ictalurus punctatus to determine the supplemental zinc level needed in a practical catfish diet. As phytic acid has been demonstrated to reduce zinc bioavailability, diets in this study were formulated to contain a relatively high level of phytic acid as compared to most commercial catfish diets. Incremental levels of zinc (as ZnO) were added to a soybean meal-based diet which contained 54 mg Zn/kg dry diet and 1.1% phytic acid. Catfish growth and feed efficiency were not improved with zinc supplementation. Serum zinc concentration did not increase significantly above a supplemental zinc level of 100 mg Zn/kg diet; whereas, bone zinc concentration plateaued at the 150 mg/kg supplemental zinc level and above. Based on these data a supplemental zinc level of 150 mg Zn/kg diet is recommended for practical catfish feeds to provide enough available zinc to the channel catfish. 1984.

authors

• Gatlin, Delbert

published proceedings

• Aquaculture

author list (cited authors)

• Gatlin, D. M., & Wilson, R. P.

citation count

• 78

complete list of authors

• Gatlin, Delbert M||Wilson, Robert P

publication date

• September 1984

publisher

• Elsevier  Publisher

published in

• Annual review of fish diseases  Journal

keywords

• 3 Prevention Of Disease And Conditions, And Promotion Of Well-being
• 3.3 Nutrition And Chemoprevention
• Nutrition

Digital Object Identifier (DOI)

• 10.1016/0044-8486(84)90387-9

start page

• 31

end page

• 36

volume

• 41

issue

• 1

URL

• http://dx.doi.org/10.1016/0044-8486(84)90387-9