A STUDY ON THE GROWTH CURVE OF AND MAXIMUM PROFIT FROM LAYER-TYPE COCKEREL CHICKS

1. 2900 commercial layer-type cockerel chicks were feared on the floor from 1-day-old to 9 weeks of age. 2. The growth curve of the cockerel chicks was (Y) over cap = 779.7/1 + 11.6290e(-0.4635x) 3. The feeding costs (US$) of layer-type cockerel chicks were described by the equat ion (Y) over cap = a + bx + cx(2) = 0.0657 - 0.0091x + 0.0069x(2). 4. When the layer-type cockerel chicks: marketing price was US$0.82 per k g. (6.8 Renminbi per kg), the optimum marketing age for maximum profit margin was 5.9 weeks (41 to 42 d).