Feeding cyromazine to luhmann hens: residues in tissues and effects on some biochemical constituents

ABSTRACT

Cyromazine was fed to Lohmann hens at 0.15 ppm level supplemented the basal diet for three eeks. The build up of cyromazine residues in liver and muscles of hens up to 7th, the balance between cyromazine intake and elimination had taken place between 7 and 10 days. After cyromazine was withdrawn from the diet its residues was depleted within seven days. During the three weeks of feeding on the treated diet, the accumulated residues reduced the blood glucose and hepatic protein significantly up to two weeks, while the hepatic lipids was slightly increased on the 7th day. Also, such residues had adverse effects on the activities of alkaline phosphatase [AP] and transminases [GOT, GPT] and extend on red blood cells, white blood cells, hemoglobin content [Hb] and packed cell volume [PCV] compared with the untreated hens