(1) A common chicken coop has four layers of eight grids, with a width of 180cm, a depth of 45cm and a height of 165cm. Chickens aged 80 ~ 15 ~ 40 days can be raised. Each chicken coop is 87cm wide, 45cm deep and 24cm high, and can accommodate about 15 chicks (Figure 1 1).
Figure 1 1 Schematic diagram of chicken coop and cage frame
(2) Chicken cages are generally used for chickens aged 4 1 ~ 140 days. Three-layer structure, with a total width of 1.6 ~ 1.7m and a height of l.7 ~1.8m. Each cage is 80cm long, 40cm high and 42cm deep. The mesh at the bottom of the cage is 2 ~ 4 cm. The mesh on the top, side and back of the cage is 2.5cm× 2.5cm. The width of the cage door is 14 ~ 15 cm, and each cage can accommodate 7 ~ 15 chickens.
(3) The chicken coop must have a certain slope, and the height difference between front and back is generally 5 ~ 6 cm. Eggs can be rolled into the egg collection grooves at the front and bottom for easy collection. At present, the layout of chicken coops mostly adopts two-story ladders, which has better ventilation. The henhouse can be fixed with two walls, hung on a beam, or supported by a bracket. The specifications of a henhouse are generally: the front height is 44 cm, the back height is 38.5 cm, the depth is 47 cm and the width is 48 cm. Four laying hens can be raised, the bottom net is 2.5 cm× 7.0 cm, the width of the egg collecting trough is 20 cm, and the height of the baffle is 5 cm (Figure 12).
Figure 12 Schematic diagram of laying hen cage (unit: cm)
If rural specialized households use local materials and make their own chicken cages, they should be designed according to the principles of economy and applicability, but they should be durable and easy to clean and disinfect.