Evaluating the effects of crab meal, Carophyll Red (R), and Carophyll Yellow (R) in laying hen diets on egg yolk pigmentation and production performance

摘要

Anderson, D. M., MacIssac. J. L., Daniel, M.A., MacKinnon,T. L. and Budgell, K. L. 2008. Evaluating the effects of crab meal, Carophyll Red (R), and Carophyll Yellow (R) in laying hen diets on egg yolk pigmentation and production performance. Can. J. Anim. Sci. 88: 637-640. A total of 480 Babcock White Leghorn hens (65 wk of age) were randomly assigned to one of five diets [wheat-based control (C), 10 g t(-1) Carophyll Red (R) (CR), 20 g t(-1) Carophyll Yellow (R) (CY), 10 g t(-1) CR+20 9 t(-1) CY (CR+CY), 80 kg t(-1) crab meal (CM)] for 60 d. There was no effect of treatment oil egg production. There was an increase in red pigmentation (a * score) on day 45 among treatments supplemented with CR, CR+CY and CM when compared with C and CY. The laying hen was capable of depositing the natural carotenoid supplied by the CM into the egg yolk.