In the hatchery production, no matter how good the hatching conditions are, there will always be some weak chicks. Even if the weak young chicks are eliminated when picking up chicks, due to genetics and mismanagement in the brooding process, there will always be a certain amount of backward development. Weak chicks. The weak youngsters who have illnesses must be eliminated. Of course, the remaining stunted and poorly bred, weak chicks can, after strengthening their feeding and management, mostly catch up with young chicks. The specific measures are: The weak chicks in the flock were singled out and reared in small groups. Weak chicks often suffer from delayed action, malabsorption of the umbilicus, large abdomen, small individuals, thinness, and inability to struggle. When splitting, 50-100 weak chicks should be grouped into one group to be raised on 1.5-2.0 square meters of ground to prevent excessive density, crowded feeding, and small space for activities. This is not conducive to chicks. The growth and development. 2. Increase and relatively stable brooding temperature. Weak chicks have poor ability to cope with changes in ambient temperature. Therefore, the broiler's room should be controlled between 32°C and -35°C within 4 days of room temperature, and 30°C to 31°C during 4 to 7 days. Later every 3 to 4 Decrease the room temperature by 1°C - 2°C and let the room temperature gradually approach room temperature 18°C ​​- 22°C. 3. Ensure adequate supply of water and feed. The weak chicks, separated into small groups, were fed with 8%-10% warm sweet water or rehydration salts for 2 hours before they were fed with full-priced chicken pellets for free feeding. The small water trays and drums to be used should be evenly distributed. It is better to use 3 water trays and 3 buckets for every 100 chicks so that each chick can have the opportunity to drink water and feed at the same time. Food, weak chicks can not eat, and can increase the uniformity of the growth of group chicks. 4. Keep enough light. Weak broilers are of weak constitution and are often crowded and squeezed. Therefore, the first 4 days of the brooding period must be kept for 24 hours. It is advisable to install a 40 watt light bulb which is 1.5 meters from the ground for every 100 chicks, so as to facilitate familiarization of the chicks to the environment. And learn to drink and eat better. 5. Do a good job in cleaning the brooding house. The litter in the brooding room should always be kept dry and clean. The wet litter should be promptly removed. Replace the fresh, dry litter. Pay attention to the disinfection of litter and utensils. Use 0.05% peracetic acid solution or 0. .05% Poisonous Solution Spray. At the same time, do a good job of ventilating and ventilating the brooding house to avoid harmful gas such as ammonia gas and hydrogen sulfide causing adverse stimulation to the chicks' eyes and respiratory tract. 6. Grasp the treatment of weak chicks and immunization. It was found that the weak youngsters suffering from omphalitis can be wiped with gentian violet syrup for 2 days and fed gentamycin at a rate of 0.5 million units per day. If the ingestion of egg yolks is incomplete, two doses of lactase per day are given. The upper squawk affected the eater, and the long bar was worn off. To enhance the physique of the weak chicks, ground vitamin C can be added to 2 chickens per 6 chicks. According to different breeds of chickens, weak chicks should be immunized intranasally with chicken mareks and Newcastle disease within 4 days. China Agricultural Network Editor
Upper Limb External Fixation
The wrist joint external fixation fully considers the physiological characteristics of the wrist joint and the structural stability of the biomechanics, so that the metacarpophalangeal joint can be completely bent freely, and the tendons and ligaments of the fingers and wrists can be relatively relaxed. Moreover, the insertion method, length and stress of the bone traction needle are also considered, and the overall force of the bone traction needle is relatively uniform.
The ulna radius external fixator fractures is relatively simple, generally unilateral fixation, or simple combination fixation, generally should not fix the upper and lower radioulnar joints. Radial external fixation stenting has a good effect on the treatment of fracture. Premature removal after surgery is not appropriate, which is easy to cause dislocation and affect fracture healing. Functional exercise can be carried out gradually after four weeks of plaster external fixation, when the wrist joint function should gradually return to normal.
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