Egg laying period concerns four major issues

It is very helpful to improve the economic benefits of laying hens by understanding several problems that are likely to occur during the laying period of laying hens and doing preventive and control work. Let us talk about these problems and solutions.
The prolapse of the anus in chickens occurs more often than in laying hens. Predisposing factors include lack of exercise in the rearing period, overweight chickens, premature or late start of hens, excess protein supply in the diet, lack of vitamin A and vitamin E in the diet, improper illumination, or insufficient supply of vitamin D, and Some pathological factors, such as cloacal inflammation, ferret, coccidiosis, and celiac tumors.
treatment method:
Most of the severe chickens are poor and have no therapeutic value. Once the chicken is found to be isolated from the anus, it should be isolated immediately. For chickens with less severe symptoms, use 1% potassium permanganate solution to wash out the prolapsed part, then apply gentian violet, apply anti-inflammatory powder or terramycin powder and rub it by hand. Reset. More serious by the above method is invalid, can be used anal rubber band purse-string suture suture treatment, that is, disease chickens reduce food or hunger strike for two days, control the production of eggs, and then in the perianal with l% procaine injection 5 -10 ml of 3-4 points in a closed injection, and then use a 20-30 cm rubber band to make a suture (in order to pass through the needle hole of the three-edge suture needle is appropriate), in the left and right sides of the anus on the skin Two stitches were sutured and the suture was tightened and knotted. After 3 days, the stitches could be cured.
Caged Chicken Egg Fatigue This disease is a disease occurring in cage chickens, which occurs mostly at the peak of egg production. It is mainly related to insufficient dietary calcium, phosphorus and vitamin D and environmental conditions. Suffering from dehydration, weight loss, accompanied by cartilage tissue hyperplasia caused by bone deformation, embrittlement, long bone thinning, often soft pressure can be fractured, ribs, costal cartilage junction was Rosary-like, and along the line skeleton depression. Diseased chickens are difficult to stand up and are lying on their feet. There is less obvious swelling and lameness in the joints of the two limbs, and atrophy of the chest muscles occurs in severe cases.
Control methods:
Increasing dietary levels of calcium, phosphorus, and vitamin D and improving environmental conditions are the main measures for preventing and treating this disease. During the peak period of chicken egg production, the calcium content in the diet should not be less than 3.5-3.7%, the phosphorus content should not be lower than 0.8-0.9%, and vitamin D3 should be 175-225 IU per day. The temperature of the house is maintained at 18-23°C, and the cage area should be no less than the standard for each chicken; chickens with severe disease can be taken out of the cage, free-range on the ground, and fed with adjusted feed to be basically healthy. Restoration and return to cage feeding.
There are several reasons for the production of thin-shell eggs for thin-shell laying hens:
1 The amount of calcium in the diet is insufficient, and the daily amount of calcium consumed by laying hens is 3-4 grams. Below this standard, thin shell eggs will be produced.
2 Insufficient vitamin D content in feed, especially vitamin D3 deficiency. Vitamin D3 plays a role in promoting the absorption of calcium and phosphorus during the metabolism of chickens. If calcium is not absorbed well and blood calcium is insufficient, the chicken will produce thin shell eggs.
3 The ratio of calcium and phosphorus in feed is imbalanced. An excessive proportion of phosphorus in feed will prevent or reduce the level of calcium absorption. The normal ratio of calcium and phosphorus in feed should be 2:1 or 3:2.
4 Chicken house temperature is too high, chicken feed intake is reduced, calcium intake is insufficient, easy to make chicken shell eggs.
5 chicken respiratory ammonia poisoning. Ammonia poisoning will cause more loss of carbon dioxide in the chicken body, resulting in the formation of calcium carbonate carbonate ion deficiency, can also cause chickens to produce thin shell eggs.
6 The problem of egg production time is generally fed at about 8 o'clock in the chicken farm. During the day, the blood calcium concentration is high. During the process of chicken egg formation, calcium production is sufficient, so the eggshell produced in the afternoon is thicker. The eggs produced in the morning are formed at night, and the chickens are at rest at night, and the food intake is too small. The blood calcium concentration is too low, so the morning eggshell is thin.
Control methods:
1 Add 0.5-1 grams of calcium to the diet to observe changes in eggshell thickness. If the thickness of the eggshell increases, it means that calcium deficiency, if the eggshell deformity shows that the lack of vitamin D3 should be added.
2 supplement calcium particles at night, with a diameter of about 2-3 mm. Granularity can cause the appetite of the chicken, increase its feed intake, and thus increase the blood calcium concentration in the body.
3 Calculate whether the available phosphorus content in the diet is normal. Generally, the available phosphorus content in the early stage of laying can account for about 0.3-0.35% of the diet.
4 In the summer, it is necessary to pay attention to the ventilation and ventilation of the coop, remove the excrement in time, and prevent poisoning due to high ammonia concentration. 5 In the hot season, the chicken house should be cooled, and the house temperature should preferably be kept between 18-23°C. At the same time, the energy and protein levels and mineral content in the feed should be properly increased so that the feed intake of the chicken can be maintained even if the feed intake is reduced. Normal nutritional needs.
6 to strengthen the feeding and management, keep the house quiet, eliminate noise, minimize the occurrence of chicken stress response, and create a good egg production environment.
The shallow yolk color of egg yolk is mainly due to the following reasons:
1 One-sided increase in calcium content in feed. Because the calcium content of the diet can affect pigment deposition, resulting in lighter colors.
2 Excessive intake of mycotoxins in the feed will reduce serum pigments and therefore affect the color of the yolk.
3 chickens suffering from coccidiosis, salmonellosis, Newcastle disease, intestinal parasites, etc., will make the yolk color shallow.
4 Feeding chickens with insecticides can also affect the color of the egg yolk.
5 Feeding too much green fodder, too little concentrate can result in light yellow eggs.
The following methods are commonly used to add color to the egg yolk:
1 Reduce the amount of white corn in the feed and try to feed yellow corn. Under the premise of guaranteeing the performance of laying eggs, the content of vitamin A and calcium in the feed should be appropriately reduced.
2 Feed carrots and leaves or their leftovers, feeding 5-10% of the diet.
3 Add 0.3% red pepper powder to the diet.
4 苜蓿 dried, crushed and added to the feed in an amount of 5-8%.
(5) Collect pine needles, eucalyptus leaves, etc., dried, crushed and added to the feed in an amount of 5-8%.
6 dried orange peel, crushed, according to the amount of diet 2-5% added to the feed.
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