1. Selection of breeds of caged broilers

The selection of caged broiler breeds is the primary condition for improving the economic benefits of caged chickens. The quality of broiler breeds directly determines the growth rate, disease resistance, yield, feed consumption, feeding cycle and feed-to-meat ratio of chickens.

Practice has shown that excellent broiler breeds can not only shorten the growth cycle, but also increase the quality of each chicken by more than 10% compared with ordinary breeds. On the whole, excellent broiler breeds are in terms of growth rate, feeding cycle, feed consumption, and economic benefits. Significantly better than ordinary breeds, so choose an excellent breed of broiler. It is advisable to choose the breed of caged broiler with fast and large white-feathered broiler.

2. Preparation of caged broiler chicken house

1. Cage. Special cages for broilers are used. The common specifications of broiler cages are 140 cm long, 70 cm wide and 38 cm high (can also be made into 40 cm, 42 cm, 45 cm or high front and low back), and a net is added in the middle. For two, open a door in front of each, the door is 40 cm wide and 30 cm high. It can grow up to 20 broiler chickens. The grid spacing of the upper half of the front net, top net, side net and rear net of the cage body is 5 cm, and the lower half of the grid is densified with a spacing of 2 cm to prevent the chicks from running out.

There are also separate spacers that are not encrypted in the lower half. The spacers are only used when the chicks grow up. As the chicks grow, the spacing is gradually adjusted until it is finally removed. The mesh at the bottom of the cage is 10 mm × 10 mm for young chicks and 18 mm × 28 mm for middle chicks. The bottom of the cage should be covered with wear-resistant and anti-corrosion plastic mesh. To ensure that each cage door opens and closes freely, water lines and feed troughs are generally installed on the outside of the cage.

The cages are installed in a stacked type and a stepped type, with 3 layers in each group, and the height after assembly is 155 cm, which can grow up to 60 broiler chickens. The height of each group of 4 layers is 195 cm after assembly, and it can grow up to 80 broiler chickens. The placement of broiler cages should be comprehensively considered in accordance with the principles of meeting the requirements of broilers for light and ventilation, which is conducive to personnel management and the operation and use of equipment such as feeding, drinking water, and manure removal, and maximizing the space utilization of the chicken house.

2. Equipment debugging. Debug the automatic drinking water system, driving feeding system, manure cleaning system, lighting system, water heater, wet curtain and automatic spraying device for temperature and humidity control in the house to ensure the best operation. For example, the water line joints are tight and leak-proof, the trough joints are smooth and firm, the light is soft and bright, and can reach all parts without dark dead corners. There is no leakage connection of each electrical circuit. Check whether the boiler, radiator, temperature control computer and water pipeline are in good condition.

3. Chicken house disinfection. The chicken farm adheres to the principle of “all in and all out”. The imported chickens come from healthy breeder farms. After each batch of chickens is released, the entire chicken farm is thoroughly cleaned and disinfected. At least 1 week before entering the chicken, the chicken house should be thoroughly cleaned and disinfected, and then closed and fumigated with formalin and potassium permanganate for 24 to 48 hours. After 2 to 3 days of air release, spray disinfection and disinfectant Choose products that are not corrosive to metals. After the above disinfection work is completed, the empty house is ready to receive chicks.

4. Test the temperature. Close the sunroof and all vents and heat the ignition. Observe how long it takes for the room temperature to reach 30°C. At the same time, according to the structure and layout of the shed, place accurate thermometers and hygrometers in different parts such as left, right, front, back, middle, upper, middle, and lower layers, and check the temperature of each part. How big is the gap between the actual temperature and humidity and the temperature-controlled computer, be aware of it and make a record.

5. Preheat in advance. If the temperature of the chicken house does not reach the required 29-33 ℃, the temperature will be low in the first two days of brooding, and the temperature will not rise until the second to third days. In this way, chicks are susceptible to cold, colds and diarrhea, which in turn affect the development of the digestive system, immune system, and cardiovascular system, and even have a long-term impact on the production performance of the flock. Therefore, it is necessary to warm up the brooding house 2 to 3 days before entering the chicken after the temperature test is over.