Journal of Nutrition and Health
- Volume 15 Issue 4
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- Pages.301-312
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- 1982
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- 2288-3886(pISSN)
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- 2288-3959(eISSN)
Influence of Dietary Protein and Feeding Pattern on the Weight Gain, Metabolism and Body Composition of Rats
식이단백질과 급식형태가 흰쥐의 성장, 대사 및 체조성에 미치는 영향
- Park, Yaung-Ja (College of Agriculture, Seoul National University) ;
- Han, In-Kyu (College of Agriculture, Seoul National University)
- Published : 1982.12.30
Abstract
A series of growing and digestion trials was conducted using Sprague- Dawley weanling male rats in order to determine the effects of two protein sources (casein and ISP (isolated soyprotein) ), three protein levels (10, 20 and 30%), and two feeding patterns (ad libitum and meal feeding) on the growth, protein and energy metabolism, and body composition of rats. The total energy level of experimental diets was kept constant in 3,600 kcal ME /kg diet. The results were as follows : 1) The amount of food intake and the weight gain of meal-fed group were lower than those of ad libitum group. Though the intake of meal-fed group on 20 and 30% casein diet was only 85% of ad libitum group, it was able to gain as much as ad libitum group. 2) There were no significant differences in the food efficiency ratio (FER) and the energy efficiency (weight gain per 100 kcal GE intake) between ad libitum and meal feeding group. The FER and the energy efficiency of 20 and 30% casein diets of meal-fed group were greater than those of ad libitum group. 3) Though the gross energy intake (GE ), the digestible energy (DE) and the metabolizable energy (ME) tended to be lower at meal-fed group, the DE/GE and the ME/GE ratios for meal-fed group were the same as those for ad libitum. 4) Though meal- fed group fed less amount of nitrogen than ad libitum group, there were no differences in nitrogen balance and the retention of rats among the treatments. Actually meal-fed group retained more nitrogen than ad libitum group at the levels of 20 and 30% dietary protein. 5) After growing and digestion trials, the body composition of rats was constant among all treatments. Significantly high negative correlation coefficient (r = -0.77) was found between the body fat content and the body moisture content. Consequently, this study suggests that meal- fed group on 20 and 30% casein diets has shown more effective utilization of the ingested food and energy than ad libitum group, and increasing tendency of weight gain and the body fat deposition. Those influences of meal feeding pattern in rats were more effective on the casein diet than on the ISP diet.
섭취한 식품이나 에너지를 체내에 보유하는데에 효율적인 것으로 알려진 meal feeding급식형태를 이용하여 단백질의 종류와 수준을 달리했을 때 쥐의 성장, 단백질 및 에너지 대사, 체조성에 미치는 영향을 파악코저 하였다. Casein과 ISP를 10, 20 및 30% 수준으로 달리하고 에너지수준을 3600 kcal ME/kg으로 동일하게구성된 실험사료를 82-100 g되는 숫쥐에게 ad libitum feeding및 1 일 2회 2시간씩 meal feeding으로 4주간의 성장시험과 대사시험을 실시하였던 바 결과는 다음과 같다. 1) Meal fed 시켰을때 사료섭취량은 ad libitum보다
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