Mineralenbalans van vleeseenden in praktijstallen en mineralengehalten in ouderdieren en broedeieren

Abstract

To update the mineral contents in duck husbandry, the contents of nitrogen, phosphate, potassium, copper and zinc are determined in feed, litter, manure, ducks (before slaughtering), parent ducks, and hatching eggs. Mineral balances of eight production cycles of meat ducks are formulate