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A total of 160 Inshas and Gimmizah laying hens, 35 weeks of age, was divided into eight groups of 20 hens each. Groups 1 and 3 were inseminated once a week, while groups 2 and 4 were inseminated twice a week. The depth of intravaginal insemination was 3 cm in groups 1 and 2 and 5 cm in groups 3 and ...

El-Sheikh, A. M. H.
Egyptian Poultry Science Association, Alexandria, Egypt
Egyptian Poultry Science Journal, 2003, 23, 4, pp 1005-1019