EFFECT OF PREVENTING COPROPHAGY IN THE RAT ON NEUTRAL DETERGENT FIBER DIGESTIBILITY AND APPARENT CALCIUM-ABSORPTION
EFFECT OF PREVENTING COPROPHAGY IN THE RAT ON NEUTRAL DETERGENT FIBER DIGESTIBILITY AND APPARENT CALCIUM-ABSORPTION
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DOI：
10.1093/jn/116.7.1204
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发表时间：
1986-07-01
影响因子：
4.2
通讯作者：
MARLETT, JA
中科院分区：
文献类型：
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作者：
CREE, TC;WADLEY, DM;MARLETT, JA
在常规笼、代谢笼和两种抗食腐笼中饲养大鼠，评估食腐对中性洗涤纤维表观消化率和钙吸收的影响：一种是允许大鼠向前和向后移动约半个体长的短线形管笼，另一种是排列成正方形的长管笼，允许大鼠沿一个方向通过管而不能转身。在正常或代谢笼中饲养的大鼠三天增重量大于在抗贪食笼中饲养的大鼠。相比之下，四种住房条件下的平均食物摄入量没有差异。在抗噬鼠笼中，两组大鼠的湿粪便重量更大，而不是干粪便重量。粪便NDF（%干重）和NDF表观消化率均不受饲养条件的影响。抗噬壳降低了表观钙吸收。体重和表观钙吸收的差异表明，预防食腐可以显著改变大鼠对食物和营养物质的利用效率。未能检测到NDF消化率的差异，表明共食对纤维消化率的研究影响不大。
The effect of coprophagy on apparent neutral detergent fiber (NDF) digestibility, and calcium absorption was evaluated by housing rats in four types of cages: regular, metabolic, and two anticoprophagy cages: a short linear tube cage which allowed the rat forward and backward movement of about one-half a body length and a long tube cage assembled to form a square which allowed the rat to move in one direction through the tube but not turn around. Three-day weight gains of animals in the regular or metabolism cages were greater than those of rats housed in either anticoprophagy cage. In contrast, average food intake did not differ among the four housing conditions. Wet, but not dry, fecal weights were greater in the two groups of rats in the anticoprophagy cages. Neither fecal NDF (% dry wt) nor apparent NDF digestibility was affected by housing conditions. Apparent calcium absorption was decreased by the anticoprophagy housing. The differences in body weight and apparent calcium absorption suggest that prevention of coprophagy in the rats produces significant changes in the efficiency of food and nutrient utilization. The failure to detect differences in NDF digestibility indicates that coprophagy has little impact on the study of fiber digestibility.