SummaryT he effects of dietary zinc on zinc absorption and excretion were evaluated with six 12-week -old beagles. T he dogs were fed a commercial dry food later supplemented with 2 and 4 mg = kg of body weight per day of either zinc sulphate, zinc acetate or zinc oxide. T he concentrations of zinc in the urine and faeces of all treatm ent groups were increased depending on the type of zinc salts and the dosage in the diet (P < 0.05 ). T he apparent absorpti on of zinc salts ranged from 0.20 to 0.36. T he zinc salt supplements at both dosages did not affec t the digest ibility of crude protein, fat and fibre. T he zinc concentration in plasma varied with the type of zinc salt and with the dosage. T he mean concentrations ranged from 61 1.46 mg to 73 1.57 mg = dl in the unsupplemented groups, whereas it was 115 2.33 mg = dl in the group supplemented with zinc acetate at the highest dosage.

No abstract

No abstract

No abstract