The objectives ofthe current experiment were to study the effect ofpanhisterectomy on calcium (Ca) and
phosphorus (P) homesotasis in female Sprague Dawley rats that were fed soymeal which ratio of Ca:P 3: 1.Ten
female Sprague Dawley rats, 6 weeks of age were randomly divided into two groups of five each. At 8 weeks of
age, the rats of treatment group were panhisterectomized. The second group was left as control At 20 weeks of
age, all animals of the two groups were placed in to individual metabolic cages for a balance study. Every
morning from day 4 to 8 of the balance study, the feed left over was collected for Ca and P analyses. Urine and
fecal samples were also collected at the same time. The results showed that fecal Ca and P excretion were
significantly higher (
