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Five measures of laying hens' autumn high yield
1. Eliminating old and sick chickens According to the egg production situation in the spring and summer of this year, the low-yielding chickens, discontinued chickens, frail chickens, floppy chickens, and severe paralyzed chickens in a timely manner will have a short laying period. Non-standard weight (including overweight and underweight), chickens with onset but no therapeutic value were eliminated to reduce feeding costs and improve production efficiency. For laying hens that are to be phased out, they can be bred individually before they are culled and strengthened before their moulting to extend the laying period. The following dietary formulas can be used for enhanced feeding: corn 50%, barley 10%, sorghum 5.6%, bean cake 12%, fishmeal 8%, bran 6%, mineral (shell powder or eggshell powder) 5%, bone meal 2.5%, salt 0.5%, trace element additive 0.4%, daily light time increased to 16 hours. When these laying hens generally start moulting and the egg production rate drops below 60%, they are sold in time. 2, the implementation of artificial mandatory moulting Each fall, the laying hens began to stop moulting. Under natural conditions, the moulting time of laying hens is as long as 4 months. During the moulting period, not only the flocking rate of the flock is greatly reduced, but also the moulting time of different fowls is sooner or later. After the moulting is resumed, there is also a precedence. The flocking period of the chicken flock comes late, giving Feeding management brings a lot of inconvenience. Therefore, artificial forced moulting is necessary in actual production. The chicken house shall be thoroughly cleaned and disinfected 1 to 2 weeks before the compulsory moulting, and the layer of the Newcastle disease vaccine shall be vaccinated for layer chickens that are to be forced to moult. At the same time, we must also sample and weigh and classify it into large, medium and small categories according to the body weight. Then place the same kind of chickens in the same cage so as to master the different time of stopping and administering drugs. Mandatory moulting can shorten the rest period of laying hens by two months or so, and make the flock moults produce neat, large eggs, and increased egg production, thus reducing the cost of raising and raising the anti-stress of chickens. Disease resistance. Artificial forced moulting can use the following three methods: 1. Medication method. That is, zinc oxide is added at a rate of 2.5% or ZnS is added at a rate of 4% in layer diets. The appetite, feed intake, body weight, and egg production rate of laying hens after adding zinc oxide or zinc sulfate to feed decreased. When the weight of the chicken population decreased by about 25% (high-zinc diets were fed continuously for 7 to 8 days), the chickens basically stopped production. At this time, the high-zinc diets could be stopped and the early-phase feeds were changed. On the first day, each chicken feeds 30 to 40 grams of feed, and then increases by 10 grams each day. When the amount of feed is increased to 100 grams on the day, the chickens can freely feed. There is no need to stop the water during the feeding of the drug, and the illumination time can be reduced to 6 to 8 hours. After the normal feeding is resumed, the illumination time is gradually extended until the daily illumination time reaches 16 hours. 2. Injection hormone method. Artificial moulting using this method should be stopped 12 days in advance to manually supplement the light, so that the chickens freely eat and drink, and then each chicken intramuscular injection of 30 ml of progesterone. In this way, the feathers of the flock will soon be replaced. After 40-50 days, the flock will begin to lay eggs. 3. Hunger law. First, stop the water supply and stop for 3 days. Stop the feeding while stopping the water. The number of days to stop the feed is determined according to the weight loss of the chicken. It is advisable to reduce the average weight of the flock by 30%: the chicken with a small weight is generally stopped for 7 to 8 days and the body weight is medium. The chicken is generally stopped for about 10 days, and the heavy-weight chicken is generally stopped for about 14 days. On the day when the water is stopped or stopped, the lighting time should be reduced from the original 16 hours per day to 6 hours per day and maintained until the supply is resumed. On the first day of resumption of feeding, each chicken feeds 30 grams and is generally supplied at one time at noon. On the second day of resumption of feeding, each chicken feeds 60 grams, which is divided into two hours; On the third day, each chicken feeds 90 grams, which is divided into three feeds: early, middle, and late. From the fourth day onwards, chickens can feed freely. The feed supplied during the recovery period of laying hens should be an egg-laying feed with a crude protein content of not less than 17%, and sulfur-containing amino acids should account for 0.7% of the ration formula. After the feed is restored, the lighting time of the flock should be gradually restored at a rate of two hours per week until it reaches 16 hours. 3. Note that calcium supplementation requires 4 to 4.4 grams of calcium per egg. If the calcium intake of laying hens is insufficient, not only is it susceptible to osteomalacia, but it also affects the eggshell quality and egg production rate. Calcium supplements should be started two weeks before the start of the flock or early in the laying season. The calcium content in laying hens' diets is preferably 3% to 3.5%, and the effect of calcium supplementation is best at 12:00 to 18:00 every day, because the supplemental calcium is absorbed into the blood at this time. It can be used directly for night eggshell formation. During calcium supplementation, care must be taken to ensure that the ratio of calcium to phosphorus in the feed is balanced (typically the ratio should be 2:1), supplemented with vitamin d3 and vitamin c, in order to increase the hardness of the eggshell and the egg production of the flock. Production can be achieved by adding some shell powder, calcium carbonate, or eggshell powder to the diet, or shell powder, etc., can be processed into granules of green bean size and placed in the trough so that the chicken can freely feed. , The best conditions for the use of high-calcium egg-yolk material. 4. Extend the lighting time. Layers require 16 to 17 hours of light each day during the peak period of egg production. After the fall, the natural lighting time is insufficient and artificial lighting needs to be added manually. The intensity of the supplemental light is preferably 3 watts per square metre of the pod and snow surface. The 40 watt light bulb with a lampshade can be suspended 2 meters above the ground. The distance between the light and the lamp is about 3 Meter. If multiple rows of bulbs need to be installed in the house, it is better to stagger the distribution so that the light in the house can be evenly distributed. Turn on the light twice a day, morning and evening. Turn on the light for the first time from 4:00 to 5:00 in the morning, turn off the light at dawn, turn on the light the second time in dark, and turn off the light at 20:00 to 21:00. . In case of low light and rain, turn on the lights during the day. Artificial lighting supplements should be regular, to turn on the lights on time, turn off the lights on time, and persevere, must not suddenly and early, suddenly long, short break, intermittent, so as not to affect the production of eggs. Before turning on the lights, feed and water should be prepared so that the chickens can start eating and drinking immediately after turning on the lights to reduce panic. Conditional chicken farmers can use the light control device of the poultry house to control the lighting of the house. 5. Insect-resistant laying hens are vulnerable to parasitic diseases, resulting in body weight loss and decreased egg production. In the autumn, the new chicken is in the open period, and the old chicken is in the molting period. It is the best period for deworming. The following drugs can be used to deworm: 1 levamisole hydrochloride. Add 20 grams of medicine per kilogram of feed or drinking water to allow the chicken to eat or drink freely, 2 to 3 times a day, and feed it for 3 to 5 days. 2 drive flood spirit. Each kilogram of body weight with flooding spirit 0.2 ~ 0.25 grams, mixed in the material or directly feeding. 3 insect nemesis. Each time 50 kg of body weight is treated with 2 grams of aphids and 5 grams of powder, it is fed orally or fed or evenly fed. 4 compound enemy bacteria net. Mix in a 0.02% ratio and mix well for 3 to 5 days. 5 Amprolium. Mix 0.025% in feed or drinking water for 3 to 5 days. During the period of chicken repelling, chicken manure should be promptly removed, and the chicken house and utensils should be thoroughly disinfected.