The Effect Of Supplementation Of Selenium And Vitamin E On The Performance, Quality And Enrichment Of Eggs

The Effect Of Supplementation Of Selenium And Vitamin E On The Performance, Quality And Enrichment Of Eggs

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Discussion
This study was developed to verify the effect of supplementation of Selenium and Vitamin E on the performance, quality and enrichment of eggs of Japanese quails.
Supplementation of selenium and vitamin E is an effective way to increase concentration of these components in eggs. NRC (1994) recommends 0.2 mg/kg of selenium in Japanese quail, thus supplementation of 0.2 ppm of Selenium chelate associated with 20 mg/kg of vitamin E has a positive effect on the deposition in the eggs when the comparison is made with each nutrient. There is also a synergic effect between selenium and vitamin E, where VITE treatment has a higher rate of deposition of selenium in eggs than control group. Thus, the presence of vitamin E diminishes the demand of selenium in the metabolism and as a result, there is more quantity of that mineral to the deposition in eggs. The same effect is observed when Se is supplied separately, where there was a greater deposition rate of vitamin E in eggs. In this experiment, the enrichment of vitamin E in eggs was proportional to the addition of that vitamin in diets. Thus, Mori et al. (2003) found the same effect, authors added 200, 400 and 600 IU/Kg of vitamin E in laying hens diets and the deposition were 160.6, 264.1, 383.2 mg vit. E/ g yolk, respectively. Similar results were found by Pita et al. (2004) the deposition of α-tocopherol in yolks was directly proportional to the addition in diets.
Pan et al. (2007) found similar results to this research. They verified an improvement of 200% in rate deposition of selenium in eggs in relation to control group. Scheideler et al. (2010), observed 36% more selenium in eggs of laying hens whose diets were supplemented with 0.75 mg of that mineral in relation to tho...


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...te and non-chelate. Sahin et al. (2003) observed a high Haugh unit when 250 mg/kg of vitamin E and 0.2 ppm of Selenium were added in Japanese quail diets under caloric stress.
Results of color, albumen percentage, yolk percentage and egg shell percentage have agreed with those found by Christaki et al. (2011) who added 300 UI/kg of vitamin E in japanese quail diets and they didn´t find effects in eggs. What is more, Gürbüz et al. (2012) didn´t find effect in percentage of albumen, yolk and egg shell when 0.3 mg/kg of Selenium in organic matrix was supplemented in diets.
Supplementation of Se and Vitamin E in basal diets can secure performance without any signal of immunological and caloric stress, which can alter the requirements of that nutrients in birds. Therefore, the high supplementation of that nutrients in diets didn´t influence statistically those parameters.

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