Analysis of the reasons for the low survival rate of white feathers during the brooding period is mainly due to the following four points: First, the poor healing rate of the umbilicus of young larvae is about 3% (compared with the chestnut pupa under the same incubation conditions). Due to the relative decrease in the rate of health-producing chicks, the survival rate is also low; the second is young eyes, poor eyesight, easy to play with piles, and wet hair. In addition, due to abnormal eating behavior, it is easy to open the eyes and lead to inconvenience, and eventually starve to death; Third, the species is unresponsive, does not love moving, is inert, easily crushed to death (but this feature is also a major factor in high yield and low consumption. Reasons: Fourth, brood cubs are less adaptable to the environment and require higher temperature and light in the brooding room. When the brooding room is turned into a scorpion cage, it often causes a large number of deaths due to environmental discomfort. To improve the survival rate of the brooding period, the following eight measures can be taken:
First, strengthen the breeding and management of breeding species and improve the quality of eggs. Strengthen the management during the incubation process, strictly control the incubation conditions, and cool the eggs at the right time during the incubation process to increase the rate of health. In addition, the breeding households should be carefully selected when they enter the nest to reduce the number of weak chicks.
Second, three days before entering the brood, the brooding room should be pre-heated in advance so that the temperature of the brooding chamber reaches 39°C. If coal stoves are used for heating, chimneys should be installed to prevent gas poisoning. Fire passages, fire walls, or warm air heating can also be used.
Third, change multi-layered sports youngsters to single-layer flat net brooding, the net bottom 120 cm from the ground, the density of 200 / square meters, divided into 4 groups, each group of 50, so as not to cause too much density, resulting in crushing death. In addition, in order to prevent the kicking of the legs, the cubage cage may initially be provided with a muslin cloth or a sackcloth. The paper or plastic cloth that is too smooth may not be used to prevent the sprained joints from being sprained during the movement of the chicks.
Fourth, feeding and drinking water. The chicks generally eat for 20 hours outside the shell and drink water before eating. Therefore, let them drink immediately after entering the chicks. Usually 1 to 10 days before drinking warm water, water temperature and room temperature the same. 1 to 2 days of age can freely drink 0.01% potassium permanganate water, this is mainly because the young chicks like red, can increase the amount of drinking water of the young chicks, prevent dehydration, but also play a role in killing the drinking water and some of the gut bacteria in the gut , to improve the body's resistance to disease, increase the rate of Jianniao. At the same time, it is necessary to provide diets that are easily digestible and nutritious for young chicks. Usually fed 4 times a day, 2 to 5 days fed 8 times, 6 to 20 days old fed 6 times. Also pay attention to feed can not be too thick, 1 to 10 days of age to rice size is appropriate. Sprinkle should be moderately thick, 0.5 cm is appropriate, too thin to eat, easy to eat, starve to death, too thick and easy to blink, causing blindness. After 7 days of age, the chicks were fed with feedstuffs.
Fifth, master the temperature, humidity and ventilation during brooding. The temperature during the brooding period is high and stable, and it is forbidden to go up or down. The optimum temperature is: 1 to 3 days of age 38 to 39C, 4 to 6 days of age 36 to 37°C, 7 to 10 days of 35°C, 10 to 20 days of 32 to 33°C, 20 days of age after 30°C It is appropriate. The height of the thermometer is equal to the back of the cockroach at the bottom. During the brooding process, it is not possible to look at the temperature indicated by the thermometer, but also to look at the mental state of the prostitute. The prostitutes hit the heap and squeeze it into a piece, indicating that the temperature is low.趴 一片 æ˜ æ˜ æ˜ æ˜ æ˜ æ˜ æ˜ æ˜ æ˜ æ˜ æ˜ æ˜ æ˜ æ˜ æ˜ æ˜ æ˜ æ˜ æ˜ æ˜ æ˜ æ˜.
In order to prevent the dehydration of the young chicks, the relative humidity in the 1-5 day old brooding room should be kept at about 60%, and then gradually reduced to maintain 50% to 55%. If the indoor humidity is too high, pathogenic microorganisms can easily cause diseases, and feed molds can cause intestinal diseases. If the humidity is too low, it may cause dehydration and respiratory diseases in the chicks. The humidity may be adjusted by ground watering.
Ventilation is one of the important conditions for ensuring the constitution of a young chick, and it is only necessary for the staff to feel comfortable.
Six, a reasonable lighting system. Usually 1 to 10 days of age using 24 hours of light; light intensity to facilitate the young chicks to eat and drink water, with 100 watt incandescent lamp is appropriate, especially in the 5 days before the absolute blackout. After 20 days of age, 40W incandescent lamps can be replaced, and the light time is controlled at 20 hours.
7. Keep a clean brooding environment, use all the utensils used by the prostitutes, and clean and disinfect regularly. The prostitutes should be vaccinated according to immunization procedures. Clean up the excrement daily and clean the drinker.
Eight, transfer group. After 20 days of age, the chicks can be transferred from the brooding cage to the adult cage. In the first three days before the clamming, the feed troughs and sinks used in the caging can be adapted to the brooding cages in advance. The clamming cage temperature should be the same as that of the brooding room. The troughs for the clams have to be correspondingly lower for the chicks to eat and drink. After the cage is over, some anti-stress drugs such as electrolytic multi-dimensional can be added to drinking water to improve the health of the prostitutes.
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