Belonje P C, van den Berg A
Onderstepoort J Vet Res. 1980 Sep;47(3):169-72.
Fifty sheep received a pelleted ration containing between 0,31 and 0,38% phosphorus. Pooled faecal samples, composed of 3 faecal pellets from 30 randomly selected sheep, were taken on 15 occasions during 23 days. The faecal phosphorus levels of the 15 pooled samples were remarkably constant with a mean of 0,94% and a coefficient of variation of 6,38%. However, when the animals the faecal phosphorus levels above and below the limits set in the repeatabilty trial. There was also a rise in faecal phosphorus when the total food intake was halved. The faecal samples were also analysed for calcium and magnesium.
五十只绵羊食用了含磷量在0.31%至0.38%之间的颗粒饲料。在23天内的15个时间点，从30只随机挑选的绵羊中各取3颗粪便颗粒组成混合粪便样本。这15个混合样本的粪便磷含量非常稳定，平均为0.94%，变异系数为6.38%。然而，当动物的粪便磷含量高于或低于重复性试验设定的限值时，情况有所不同。当总食物摄入量减半时，粪便中的磷含量也会升高。还对粪便样本进行了钙和镁的分析。
