Belonje P C, Van den Berg A
Onderstepoort J Vet Res. 1980 Sep;47(3):163-7.
Analyses of rectal faeces of sheep for phosphorus, calcium and magnesium may be useful to indicate the mineral status of the herbage being consumed. A number of sheep should be used for each pasture, but this would entail a large number of individual analyses. In this experiment it was shown that a pool analysis of faeces did not differ significantly (P less than 0.01) from the arithmetic mean of the individual samples (20). In 13 replications this was true for phosphorus, calcium and magnesium, whether the sheep were non-pregnant, non-lactating, pregnant, or lactating. From the results it was estimated that 3 faecal pellets from at least 30 sheep should be used to make the pool. Blood was also taken on 11 occasions for pool and individual (20) analyses. No significant difference was found for plasma inorganic phosphate, magnesium and total protein, but on 3 occasions there was a significant difference (P less than 0,01) for plasma calcium.
分析绵羊直肠粪便中的磷、钙和镁，可能有助于指示其所食用牧草的矿物质状况。每个牧场应使用多只绵羊，但这需要进行大量的个体分析。在本实验中，结果表明粪便混合分析与各个样本的算术平均值之间无显著差异（P小于0.01）。在13次重复实验中，无论绵羊是否怀孕、是否哺乳，对于磷、钙和镁来说都是如此。根据结果估计，制作混合样本应使用至少30只绵羊的3个粪粒。还在11个时间点采集了血液进行混合分析和个体分析（20次）。血浆无机磷酸盐、镁和总蛋白未发现显著差异，但有3次血浆钙存在显著差异（P小于0.01）。
