Do you have solid reasons to expect a shortage in the supply of vitamin E/selenium to the parent stock or the young broilers? What problems do you have to solve and are no other possible issues causing these problems?
Supplement of vit E & Selenium to broilers might be helpful as these are good source of antioxidant.
Vitamin E plays an essential role in terms of embryo reproduction and its formation, and without a doubt, its deficiency will reduce the number of chicks hatched in chickens. Also, for the better performance of this vitamin, the presence of selenium in the diet is necessary. They probably have a synergistic effect together.
Even with beneficial results, it is difficult to recommend it from the practical point of view especially for mass production farms as it will demand too much labor and cost to apply in-ovo technique.
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