Effect of different daily doses of gizzerosine on the serum 1,25-dihydroxycholecalciferol concentration in laying hens

• Published in: British poultry science Vol. 40; no. 4; pp. 523 - 528
• Main Authors: Mrljak, V, Grabarevic, Z, Dzaja, P, Baric Rafaj, R, Peric, J, Artukovic, B, Bidin, Z, Kis, S, Stavljenic Rukavina, A, Serman, V
• Format: Journal Article
• Language: English
• Published: England Taylor & Francis Group 01.09.1999; Taylor & Francis Ltd
• Subjects: Animals; Biogenic Amines - pharmacology; blood chemistry; calcitriol; Calcitriol - blood; calcium; Calcium - blood; Chickens - physiology; dosage; dose response; Dose-Response Relationship, Drug; Female; Fish Flour; hens; Imidazoles - administration & dosage; Imidazoles - pharmacology; magnesium; Magnesium - blood; Oviposition; Phosphates - blood; phosphorus; quantitative analysis; toxicity; toxins
• ISSN: 0007-1668; 1466-1799
• DOI: 10.1080/00071669987304

1. Five groups of laying hens were treated with different gizzerosine doses (0, 2.5; 5.0; 7.5; 10.0 mg/kg/body weight of gizzerosine) daily over a 21-day period to determine the serum concentrations of 1,25-dihydroxycholecalciferol (1,25(OH)(2)D), total calcium, inorganic phosphorus and magnesium. Blood samples were taken on days 7, 14, and 21 of the experiment. 2. The concentration of 1,25(OH)(2)D remained unchanged after day 7 in the gizzerosine-treated birds compared to the control group. 3. After 14 days, it was significantly lower in the birds receiving gizzerosine, compared with the control group. 4. On day 21, 1,25(OH(2))D concentrations were also significantly decreased in all 4 gizzerosine-treated groups compared with the control hens. 5. The serum total calcium, inorganic phosphorus and total magnesium concentrations varied significantly, but irregularly, during the period of the study.