EFFECT OF LEVELS OF NIACIN SUPPLEMENTATION ON THE HAEMATOLOGICAL \AND SERUM PARAMETERS OF LAYING HENS.

Résumé

A study was carried out to investigate the effect of niacin supplementation in layers diets on haematological and serum parameters of laying hens. Four dietary treatment with niacin at 0ppm, 30ppm, 40ppm, and 50ppm were fed to the bird for a period of 20 weeks. Each treatment had 18 birds comprising
of 3 replicate of six birds each. Data were collected at the end of the experiment on the blood serum and haematological parameters. Levels of niacin supplementation had significant effects (p<0.05) on most of the haematological and blood serum parameters considered except in red blood cell, Triglyceride, Cholesterol, Uric acid and LDL. At 50ppm packed cell volume (PVC), haemoglobin, white blood cell, serum protein, serum albumin and globulin were 33.0%, 12.5g/dl, 19873.3, 60.50g/dl 32.2g/dl and 28.8g/dl respectively, while creatine, and HDL were 0.90 and 22.6 mg/dl. The triglyceride, cholesterol,
LDL and uric acid were not significantly affected by the level of niacin supplementation and the PCV, Hb, Serum albumin, Globulin, cholesterol, HDL and Uric acid were significantly higher at 20th weeks of the experiment.