Meyer H, Zentek J, Habernoll H, Maskell I
Institut für Tierernährung der Tierärztlichen Hochschule, Hannover, Germany.
Zentralbl Veterinarmed A. 1999 Apr;46(3):155-65. doi: 10.1046/j.1439-0442.1999.00201.x.
The digestive capacity of dogs varying in body size was tested. Digestive experiments were conducted with 10 different canine breeds (n = 66) with body weights ranging from 4.2 to 52.5 kg with 4-9 individuals. The animals were fed a canned or a dry commercial diet with a constant dry matter intake of 13 g/kg BW/day, except in Irish wolfhounds, which ingested only 10 g dry matter with the canned diet. Faecal dry matter was around 14% (absolutely) higher for the dry diet compared to the canned food, with a tendency in the larger breeds towards higher faecal water contents, less favourable faecal quality and increased numbers of defaecations. The Irish wolfhounds, the largest breed tested, had faeces with considerably lower water contents compared to Labrador retrievers, indicating that body weight is not the only factor to be considered. There were only small differences in the apparent digestibility of crude nutrients amongst the breeds. Sodium and potassium absorption was higher when the dry diet was fed compared to the canned food. In conclusion, breed and individual factors have to be taken into account when performing tests with dog food. Test panels for evaluating commercial diets should include breeds of larger body size and higher sensitivity to dietary disorders.
对不同体型犬类的消化能力进行了测试。对10个不同犬种（n = 66）进行了消化实验，这些犬种体重从4.2千克至52.5千克不等，每个犬种有4 - 9只个体。除爱尔兰猎狼犬外，所有动物均喂食罐装或干制商业饲料，干物质摄入量恒定为13克/千克体重/天，爱尔兰猎狼犬喂食罐装饲料时仅摄入10克干物质。与罐装饲料相比，干饲料的粪便干物质含量绝对高出约14%，体型较大的犬种有粪便含水量更高、粪便质量较差和排便次数增加的趋势。测试的最大犬种爱尔兰猎狼犬的粪便含水量相比拉布拉多寻回犬要低得多，这表明体重并非唯一需要考虑的因素。各犬种之间粗养分的表观消化率仅有微小差异。与罐装饲料相比，喂食干饲料时钠和钾的吸收更高。总之，在用狗粮进行测试时必须考虑品种和个体因素。评估商业饲料的测试组应包括体型较大且对饮食紊乱更敏感的犬种。
