Feeding techniques of green shell laying hens

Eggs and chicken are common poultry products on the dining table of ordinary people. nowadays, people have higher and higher requirements for pollution-free and green food, for the majority of chicken farmers. How to produce green chicken products, reduce feeding costs and expand profits is an urgent need to know. The main points of breeding techniques of green-shell laying hens are as follows:

I. Construction of chicken coop

The chicken house is built in a ventilated and sunny place, with a 70 cm × 120 cm lighting window every 3 meters before and after the chicken house. Perch, drinking fountain and material trough can be placed on one side of the room. Open a small door 160 cm high and 70 cm wide on the sunny side, and set up a playground covered with sand outside.

Second, hatching

Eggs weighing more than 40 grams are selected as breeding eggs and hatched artificially. Incubation technical requirements:

1. Temperature and humidity

The eggs hatched in batches should be hatched at a constant temperature. Each batch of eggs should be placed at cross intervals, and people who hatch eggs should pay attention to putting the big head up on the egg plate. After 1-18 days of incubation, the suitable temperature in the incubator (egg noodle temperature) is 37.8 ℃ in winter and 37.5 ℃ in summer. The hatching machine was transferred to the hatching machine on the 19th day, and the eggs were laid flat. The suitable temperature in the machine was 37.2 ℃ in winter and 37 ℃ in summer. The relative humidity is 60% for 18 days and 70% for 21 days.

2. Turn the eggs every 2 hours at an angle of 90 degrees.

3. Brooding

Generally hatching begins to hatch on the 20th day. The shell is almost finished in 21 days.

4. Disinfection

Eggs must be sterilized 30 minutes after laying and before hatching. After hatching, disinfect once, and spray disinfection such as formalin fumigation or parathion.

III. Nutrition and feeding

The nutritional requirements of green shell layers are as follows: dietary crude protein of chicks accounts for 20%, crude protein of young chickens accounts for 15%, and crude protein of breeder chickens accounts for 17%. The hatching period is within 30 days, and the key to this period is heat preservation. The temperature is kept at about 33 ℃ within 3 days after shelling, and then decreases by 2 ℃ every 7 days. The principle is that chicks are evenly distributed around the heat source. The chicks were fed with full-price chicken feed 4 times a day after drinking water. We should also pay attention to ventilation during the breeding period. The density is generally 10-day-old, 40-50 / square meter, 20-day-old, 30 / square meter and 30-day-old, 20 / square meter. The weight of 140-day-old hens is generally controlled at about 11kg and that of Roosters is about 2kg. At the age of 140 days, the feed of young chickens was changed into full-price feed for laying hens, and water-soluble multi-dimensional was added to drinking water. Farmers can feed some green vegetables or grass, generally accounting for about 20% of the total feed, but not mixed with dry feed. The requirements of egg laying light are as follows: 16 hours a day in the early stage of laying, and 16-17.5 hours a day at the peak of egg production. When laying eggs, the chicken feed consumption is about 85 grams per day. Pay attention to the regular feeding of medium and coarse sand, the dosage is every 1000.

The chicken is fed 6 kilograms. Each herd of breeder chickens can raise 100,200 chickens. In addition to restricting breeding, breeder chickens should also be conditionally limited to light, preferably 8 hours a day after 55 days. The breeding henhouse can be set up with egg laying boxes and rectangular egg laying ponds made of wooden boards, which are filled with fine sand to keep the environment quiet and dry.

IV. Prevention and treatment of diseases

Disease prevention runs through the whole feeding process. To prevent bacterial diseases such as salmonella and Escherichia coli, enrofloxacin is the first choice. 100 ml of 10% solution is added to 100 kg of water to allow chickens to drink freely. In addition, drugs such as tenosin and doxycycline are used to prevent respiratory diseases such as mycoplasma and mycoplasma. Often disinfect with Baidu and so on. Pay attention to the prevention of coccidiosis before and after 20 days of age. The chickens were vaccinated with Newcastle disease vaccine and fowlpox vaccine at the age of 7 and 10 days. At the age of 12-14 days, chicken bursa vaccine is the first choice to drink water. Breeder chickens should be vaccinated against Newcastle disease, bursa of Fabricius, infectious bronchitis and egg drop syndrome, specifically according to the immunization procedures of local domestic chickens.