Document Type

Report

Report Number

A.S. Series 73-22

Publication Date

1973

Summary

Previous studies have shown that adding copper, as copper sulfate, to raise the copper level to 120 ppm in low and high protein diets resulted in Increased weight gains and reduced incidence of aortic ruptures. Without copper additives the diets contain 8 to 12 ppm Cu. In all previous studies, 4-nitrophenylarsonic acid was used as a blackhead preventative. It is acknowledged that "4-nitro" depressed growth. Also sulfate ions, from various sources, have shown a sparing effect on the sulfur amino acids, thereby promoting growth. These facts raised several questions. Does the added copper promote growth by suppressing toxicity of "4-nitro" or by adding sulfate ions to the diet? Also, does the added copper increase the amount of copper stored in the liver?

Number of Pages

2

Type

text

Format

application/pdf

Language

en

Publisher

Department of Animal Science, Agricultural Experiment Station, South Dakota State University

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