LAYERS Layers are efficient egg producers, breeds used for eggs production in the industrial production system are almost entirely based on the White Leghorn and Rhode Island Red. Selection and crossbreeding techniques have resulted in productive laying hens producing 15 – 19Kg of eggs per year. In layer production, sometimes 2 phases of production are recognised: 1. Growing phase up to approximately 140 days, and 2. Productive phase from 140 – 560 days. ROOSTERS Roosters may produced with male and female chicks. Usually, males of dual-purpose hybrid are used. The females of these hybrids are commercially suitable as layers, while both the females and males, and particularly the latter, are suitable as table birds. The same hybrids are suitable for producing poussins. The hybrids of the birds used are the Rhode Island Red, Sussex Plymouth Rock and sometimes the meat strain of the Leghorn. The birds are reare...