First, chicken selection
Some broiler breeders only pay attention to the price of chickens and ignore the quality of chicks. The quality of chickens is the basis for the success of broiler rearing. Only by purchasing healthy chicks with excellent quality, can an ideal feeding effect be achieved. The quality of the chicks directly affects the growth of the broilers and the economic benefits of the farm. Therefore, the chickens for the chicken farms with good quality and good reputation are selected. When the chicks are infected, the chickens with the symptoms of omphalitis and white peony are excluded. , eliminate weak chickens and residual chickens, and prevent the purchase of inferior chicks.
Second, ventilation issues
In the early stage, we must not only pay attention to insulation but neglect ventilation. Because of the high temperature, the air is dirty and dry, and the dust flies in the air. It is easy to cause foreign body bronchitis, bronchitis, pneumonia and air-swelling. Ventilation design to leave skylights and about 60 cm above the roof, is conducive to the release of harmful gases such as ammonia, but also to prevent a large number of outside the home from the skylights, "backwards" into the interior, so that the door, window and sunroof form a A good ventilation route helps to discharge the dirty air in the house in a timely manner. In the later period, ventilation should be strengthened while not neglecting the work of heat preservation. In particular, in the seasons of chicken disease, climate change, and the temperature difference between day and night, avoid thieves and drafts.
Third, grasp the humidity
The high temperature in the brooding room often causes the relative humidity in the brooding house to be low, the humidity in the brooding period is too low, the air in the house is dry, the dust is flying upward, the respiratory mucosa is easy to be irritated, the resistance is weakened, and the pathogenic bacteria are inhaled by the chick as the dust flies. Injuries to the respiratory mucosa, resulting in inactivation or detachment of cilia, pathogenic bacteria entering the airway through the respiratory tract, susceptible to respiratory diseases and E. coli disease. The humidity in the house is too small, and it can easily cause a large amount of water loss in the chicken body, dry hair, decreased appetite, increased thirst, resulting in dehydration of the chicks. Therefore, it is also important to keep a good understanding of the humidity inside the house during brooding and keep the relative humidity within the broiler room between 60% and 70%. Practice has proved that: humidity greater than 80% or less than 40% will have an adverse effect on the growth of chickens. When the humidity is too low, ground watering, air spray, and water basin on the stove can be used to increase the humidity.
Fourth, attach importance to selection of chicks and groups
1. Choose chicks. The first picking should be carried out when the chicks arrive at the brooding room. The weak chicks and young chicks should be single-fed separately. The remaining chicks should be eliminated to purify the chickens; the second picking should be carried out at 6-8 days of the chicks' age. It can also be carried out when the chicks are first immunized, and small, poorly growing chicks are isolated and fed separately.
2. Feeding in groups. The male and female broilers have different male and female genders, and their physiological basis is also different. Therefore, requirements and reactions to environmental and nutritional conditions are also different. If the rooster grows fast, and the hen's growth rate is slow, the difference between the 56-day weight is about 27%; the weight growth rate of the rooster after 8 weeks of age declines, and the weight growth rate of the hen after 7 weeks of age declines, according to economic benefits Should be slaughtered separately. Therefore, it is best to use male and female bred groups to feed broilers. After the male and female broilers are grouped, the ration level can be adjusted separately to better improve feed utilization.
V. Limiting materials and water control
In order to prevent the broiler from growing too fast, it is appropriate to control the material before 20 days of age to prevent broiler ascites syndrome, sudden death syndrome and other nutritional metabolic diseases. In the later period, 1%-2% of garlic can be added to the feed, which can prevent enteritis and promote feed intake, and shorten the number of feeding days. During the onset of the flock, when treating infections such as Escherichia coli, viral diseases, coccidiosis, and other systemic septic diseases, the water can be controlled for 0.5-2 hours before administration. In addition, when the chickens are immunized with drinking water, they can control the water for 2-4 hours. Of course, the duration of the water control should also refer to the age of the chickens, the season, the growing situation, and the half-life of the drugs.
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