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THE INFLUENCE OF INDUCING EARLY REPRODUCTIVE ACTIVITY IN YOUNG HENS AND ROOSTERS OF EGG-LAYING TYPE BREED
Journal of Central European Agriculture
A Fsample of young 60 hens and 40 roosters of Rhode Island breed were divided in groups L1, L2 and L3. Individuals in group L1 were transferred at the age of 16 weeks from 8 h light/ day to 16 h light/ day and fed with a normal adult poultry feed. The same switch was performed with groups L2 and L3 at the age of 18 and respectively 20 weeks. Modifications of the sexual traits were recorded including: phenotype, weight and length of the genital tract, laying intensity, average egg weight anddoaj:8d98cbdcbf5f48a0b699ff1c49304ee7 fatcat:davdryg4s5hfjhknqtaevcxvsu