Effect of alpha-tocopherol addition in diet on content and transfer rates of alpha-tocopherol in hen egg yolk, on productivity and haugh unit
2001
Fukuhara, E. (Fukuoka-ken. Agricultural Research Center, Chikushino (Japan)) | Maeda, T. | Nishio, Y. | Turusaki, M.
A study was conducted to determine the influence of 5 levels of alpha-tocopherol content (0, 0.02, 0.04, 0.06 and 0.08%) in the diet; on its content ratios in the hen egg yolk; and on its diet to egg yolk transfer. Also, a study was conducted to determine the effect of 4 levels of alpha-tocopherol (0, 0.02, 0.04 and 0.06%) contention the diet on productivity and haugh unit The alpha-tocopherol concentration in egg yolk increased (P<0.01) with increased dietary alpha-tocopherol intake. The alpha-tocopherol transfer efficiency from diet to egg yolk was about 20% when hens were fed 0.02 - 0.08% of alpha-tocopherol in their diet. The dietary alpha-tocopherol (0.02 - 0.06%) did not affect productivity and haugh unit Thus, alpha-tocopherol enriched eggs can be produced by feeding hens conventional diets with addition of 0.02 - 0.06% level of alpha-tocopherol without affecting productivity and haugh unit.
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