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The genetic breeding improvement plan carried out in the past decade, put emphasis on the selection characteristics such as weight gain, rapid growth in broiler breeders as cause of reduced fertility rate. This occurred due to the negative correlation between reproductive and productive trials....

Rahimi, S.; Mohammadi, R.; Shahidi, R.; Salehi, M. M. R.; Jomeh, E. N.
Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
Journal of the Faculty of Veterinary Medicine, University of Tehran, 2001, 56, 3, pp Pe23-Pe28