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KMID : 0380319750150000331
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Journal of Korean Research Institute for Better Living
1975 Volume.15 No. 0 p.331 ~ p.338
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A study on the Nutritional Effects in Rats for Feeding Diets Supplemented with Beef Tallow and Rape Seed Oil.
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Abstract
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A study was carried out on the nutritional effects in rats for feeding diets containing 5% or 20% of fat, beef tallow or rape oil for 12 weeks. The experimental animals, 240 albino rats, a pure strain that have been kept with the stock diet for 2 weeks right after weaned were used, and their initial body weight for the experiment were about 80g. The animals were divided into 32 groups according to dietary condition and feeding periods.
An any animal which showed unusual appearance during the study were excluded.
The results obtained were summerized as follows:
1. The body weight of the experimental dietary group animals were generally lower than that of the control group throughout the study period.
2. The weight of organs, liver, kidney, spleen, and heart in the experimental dietary group animals have shown no difference from the control group up to 8 weeks of experimental period, but they have shown lower than that of the control group thereafter.
3. The hematocrit value and hemoglobin contents in the experimental dietary group animals have shown higher level than that of the control group up to 8 weeks, but they have shown no difference with the control group thereafter.
4. It has been no significant difference in nitrogen contents in the liver between the experimental period.
5. The total cholesterol contents in liver and serum, and free form cholesterol in the serum of the high rape oil dietary group animals have shown significantly high level than that of the control group throughout the experimental period.
6. The total cholesterol contents in the aorta of the high rape oil dietary group animals have shown higher level than that of the control group up to 8 weeks of the experimental period.
It might be able to state through the above conclusion, the diet containing 10% fat has shown better nutritional effect on rats than either 5% or 20% fat diets. It is also implying that the high rape oil diet has some effects on animals growth and cholesterol metabolism in rats.
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