Answers to frequently asked questions about laying hen breeding

1. Why do layers peck their feathers and anus? What are the factors causing it?

Layer feather pecking is caused by the lack of some nutrients in the body, the most important of which are nicotinic acid, pantothenic acid, folic acid, biotin and so on. The solution is to add these individual vitamins to feed or drinking water, or change to a premix product with high content of these ingredients.

Layers peck their anus because the laying time is too long and the light in the henhouse is too bright, because the hens are particularly sensitive to red. If other chickens see the red uterus that is turning out, they will peck. If the light is too dark for other chickens to detect, the incidence of anal pecking will be reduced, but the dim light will affect the laying rate. The reasons for too long laying time are that the eggs are too large or small, but the uterine contraction of chickens is weak, and the factors affecting uterine contraction are the body weight of laying hens, the balance of acid, base and ions in feed, and the content of B vitamins in feed. especially B1, B6 and so on, the improvement method is to increase the content of lysine in feed, increase the content of B vitamins or change to a reliable premix product. Sodium bicarbonate and potassium bicarbonate were added to feed or drinking water to improve the feeding conditions and breeding period management of chicken sheds.

Common problems in laying hen breeding

two。 How to overcome the problem of shell pecking by laying hens

Due to the lack of certain nutrients in the feed or uneven mixing, individual laying hens are addicted, and the taste of eggs is the best for these certain nutrient-deficient hens. Once this kind of chicken has eaten eggs once, it will continue to eat them. The solution is to recalculate the feed formula, fully balance the nutritional indicators in the feed, use premix products with real ingredients, and adjust the slope of the chicken cage. Generally speaking, chickens who like eggs also peck their feathers.

3. Sometimes chicken pull green dung is how to return a responsibility?

The chicken dung turns green because the bile in the intestine is not completely absorbed, because the bile is green, so the chicken manure turns green. The causes of poor bile absorption are intestinal inflammation (such as Newcastle disease), excessive intestinal movement (such as hunger), excessive intestinal osmotic pressure (such as high metal ions), and ingredients in feed are not easy to absorb (such as breeding-opening and changing). Feed components stimulate intestinal movement (such as high crude fiber content in the feed, a certain type of bacterial toxin) and so on.

4. How is it that chickens do not have a peak in egg production, or do not last long?

There are many reasons for low egg production peak and short maintenance time, including body weight and light management during the breeding period; energy content, unsaturated fatty acid content, essential amino acid content, various vitamin content, etc.; whether the disease suffers from some invisible subclinical diseases such as mycoplasma disease, colibacillosis, etc., it is necessary to carefully analyze the causes before determining the solution. At present, it is generally due to improper management of the breeding period.

5. How is chicken pulling white dung to return a responsibility?

The metabolism of chicken nitrogen is different from that of mammals. Many amino acids are removed and metabolized as energy carriers, and the removed amino groups are finally converted into uric acid. Uric acid is combined with some metal ions in the body to form uric acid and excreted through the kidney. Because the urethra of the chicken is connected with the rectum, the chicken feces is white.

6. How long will it take for layers to shine?

Under normal circumstances, the light time of laying hens is between 16.5 and 17 hours, too much light will not help laying eggs, and too little light will decrease the laying rate.

7. How to improve egg production and egg production rate?

There are many factors affecting egg production and egg production rate, which can be divided into environment, management, disease and feed. In terms of feed, feed digestibility, methionine lysine content, metabolic energy content, various vitamin content and daily feed intake are the most influential. Only by increasing these indicators can high egg production and egg production be obtained.

8. How to use protein feed more effectively?

First of all, the digestibility of raw materials is an important index, and only raw materials with high digestibility can be fully utilized by animals; secondly, the balance of energy and amino acids in full-valent materials is very important, when energy is high compared with amino acids, animal feed intake decreases, animal production performance is not good, on the contrary, the utilization rate of protein decreases. In addition, when the amino acid content of protein raw materials is unbalanced, the utilization rate of protein feed becomes lower; in addition to the above factors, some trace nutrient elements related to protein metabolism, such as vitamin pantothenic acid, B6, biotin and so on, should be considered. if the content of these components is not enough, the utilization rate of protein feed will be reduced, and the solution to the above problems is to use computer software and reliable premix products.