Process for increasing the egg production and strengthening the eggshells of poultry using a bisphosphonic composition

摘要

Described is a composition for administration to poultry for strengthening the eggshells, comprising a bisphosphonic acid or salt or hydrate of the acid. This is administered to the poultry before the average age of onset of laying. The bisphosphonic compound may have the formula (I), wherein; R1 and R2 are, independently selected from the group consisting of a hydrogen atom, a halogen atom, a hydroxyl group, a group -T, and a group -XT. T is selected from the group consisting of an aliphatic saturated or unsaturated hydrocarbon-based radical, optionally substituted and/or optionally interrupted with one or more O, S, N, N-CO, CO-N, CO, SO or SO2, a saturated, unsaturated or aromatic, optionally substituted carbocyclic or heterocyclic radical, and a radical with both an aliphatic part as defined above, the radical being optionally substituted and/or optionally interrupted with one or more O, S, N, N-CO, CO-N, CO, SO or SO2, and X is selected from the group consisting of O, NH, NT, S, CO, CO-NT and NT-CO, in which T is as defined above, and a physiologically acceptable hydrate or salt of this compound.