RESPONSE OF RATS TO DIETS CONTAINING 250 PPM SUPPLEMENTAL COPPER: GROWTH, FOOD CONVERSION, LIVER COPPER ACCUMULATION, AND FAT COMPOSITION | Zendy

J. I. Elliot | Zendy; J. P. BOWLAND | Zendy

Open Access

RESPONSE OF RATS TO DIETS CONTAINING 250 PPM SUPPLEMENTAL COPPER: GROWTH, FOOD CONVERSION, LIVER COPPER ACCUMULATION, AND FAT COMPOSITION

Author(s) -

J. I. Elliot,

J. P. BOWLAND

Publication year - 1972

Publication title -

canadian journal of animal science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.377

H-Index - 64

eISSN - 1918-1825

pISSN - 0008-3984

DOI - 10.4141/cjas72-011

Subject(s) - weanling , copper , composition (language) , meal , feed conversion ratio , food science , chemistry , soybean meal , copper deficiency , fish meal , zoology , biology , fish <actinopterygii> , body weight , endocrinology , philosophy , organic chemistry , fishery , raw material , linguistics

Thirty-two weanling rats were used to study the effects on food intake, average daily gain, food conversion, accumulation of copper in the liver, and fatty acid composition of body fat when 250 ppm supplemental copper was added to a barley–fish meal or barley–soybean meal diet. Rats were killed at either 4 or 8 weeks following the start of the experiment. Supplemental dietary copper did not influence food intake, reduced daily gain (P < 0.10 for 0–4 weeks only), depressed food conversion (P < 0.05 for 0–4 weeks only), increased liver copper concentration (P < 0.05), and did not alter the composition of body fat in comparison with control animals receiving either of the nonsupplemented diets. Based on these results the rat does not appear to be a suitable pilot species for investigating metabolic responses in pigs to high level copper supplementation of diets.

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