EVALUATION OF WATER HYACINTH (EICHORNIA CRASSIPES) AS FEED INGREDIENT AND YOLK COLOURING AGENT IN LAYERS DIETS.

Résumé

Sixty-four Black Harco breed of laying hens, 39 weeks in lay were fed water hyacinth Eichhorria crassipes at dietary levels of 0, 5, 10, and 15% for 56 days. The experiment had eight birds in each of the 2 replicates per treatment with the E. crassipes levels of inclusion as treatment. Parameter study include body weight change, feed intake, egg weight, egg yolk coloration, egg shell thickness and feed conversion ratio (feed/kg egg). The mean feed intake significantly decreased (P<0.05) among the mean values of 126.98, 127.27, 127.27 and 122.59 g/day for 0, 5, 10 and 15% inclusion levels respectively. the egg shell thickness increased significantly (P<0.05) among the mean values obtained i.e from 0.51-0.67 mm. however, egg weight changes, egg yolk coloration and feed conversion ration did not show any significant difference (P>0.05) among the respective means. E. crassipes appears to be optimally utilized at 5% dietary level  in layers ration and could be used as pigmenter for egg yolk coloration at this level.