1. For nutrition, different roosters have poorer ability to deposit fat than hens, but roosters use proteins more efficiently than hens. From the age of 2 weeks, the protein level of the cock feed should be higher than that of the hens.
2. Different growth speeds The roosters grew fast. At 4, 6, and 8 weeks of age, the cock weight was 13%, 20%, and 27% higher than the hens, respectively. If the male and female polyculture, the weight is not the same size, food trough, drinking fountains require different levels, often overlooked.
3, the environmental requirements of different rooster feathers grow slower, hen feathers grow faster, so the cock's early requirements on temperature than the hens, and later than the hens lower; cock weight is greater than the hens, so The incidence of breast cysts is higher than that of hens, requiring litter looseness and proper thickening.
4. Genetic performance Different hens have a relative decrease in growth rate after 7 weeks of age, and the consumption of 1 kg per weight gain increases sharply. Therefore, hens are sold around 7 weeks of age, and the feed utilization rate is high; the cocks grow after 9 weeks of age. The speed dropped, so the 9-year-old cock sold the best.
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