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1958•Canadian Journal of Biochemistry and PhysiologyRequires access

THE DETERMINATION OF THE AVAILABLE CALORIC CONTENT OF RAPESEED OIL BY RAT GROWTH

E. J. Middleton, J. A. Campbell

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Abstract

The available metabolic energy of rapeseed oil, semihydrogenated rapeseed oil, and corn oil was measured in terms of 7-day body-weight gains of weanling rats fed a calorically restricted diet. Standard bio-assay procedures were used with lard as a reference standard. The oils were fed at three levels equivalent to 5, 9, and 17% of the diet by weight. Growth responses to the three oils and to lard were similar and the calculated caloric content of the oils showed no significant difference from that of lard. A 1 week assay was as precise as a 5 week assay.

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What this paper is about

The available metabolic energy of rapeseed oil, semihydrogenated rapeseed oil, and corn oil was measured in terms of 7-day body-weight gains of weanling rats fed a calorically restricted diet. Standard bio-assay procedures were used with lard as a reference standard. The oils were fed at three levels equivalent to 5, 9, and 17% of the diet by weight. Growth responses to the three oils and to lard were similar and the calculated caloric content of the oils showed no significant difference from that of lard. A 1 week assay was as precise as a 5 week assay.

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Available abstract

The available metabolic energy of rapeseed oil, semihydrogenated rapeseed oil, and corn oil was measured in terms of 7-day body-weight gains of weanling rats fed a calorically restricted diet. Standard bio-assay procedures were used with lard as a reference standard. The oils were fed at three levels equivalent to 5, 9, and 17% of the diet by weight. Growth responses to the three oils and to lard were similar and the calculated caloric content of the oils showed no significant difference from that of lard. A 1 week assay was as precise as a 5 week assay.

Key concepts: Rapeseed, Weanling, Caloric theory, Food science, Corn oil, Body weight, Animal science, Chemistry

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