Merritt A M, Burrows C F, Cowgill L, Streett W
J Am Vet Med Assoc. 1979 Jan 1;174(1):59-61.
Fat balance studies and quantitative analysis of fecal trypsin were done on 2 groups of Beagles fed either a meat-base (8.8% fat) or a cereal-base (10.5% fat) diet. In the amount fed, the meat-base diet provided 2.5 to 3 times more fat than the cereal-base diet, yet the mean daily fecal fat output of the 2 groups was not significantly different. Thus the percentage assimilation of fat in cereal-base diet (90.0%) was significantly (P less than 0.01) lower than that in the meat-base diet (96.9%). Dietary composition made no significant difference in fecal trypsin output, although the mean output from dogs fed the meat-base diet 4 times higher than that from dogs fed the cereal-base diet.
对两组比格犬进行了脂肪平衡研究和粪便胰蛋白酶定量分析，这两组比格犬分别喂食肉类为主（脂肪含量8.8%）或谷物为主（脂肪含量10.5%）的饮食。在喂食量方面，肉类为主的饮食提供的脂肪比谷物为主的饮食多2.5至3倍，但两组的日均粪便脂肪排出量并无显著差异。因此，谷物为主饮食中脂肪的同化率（90.0%）显著低于肉类为主饮食（96.9%）（P小于0.01）。饮食组成对粪便胰蛋白酶排出量无显著影响，尽管喂食肉类为主饮食的犬只的平均排出量比喂食谷物为主饮食的犬只高4倍。
