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When do hens lay eggs after ovulation? What is the process of laying eggs in a hen?


When do hens lay eggs after ovulation? 
What is the process of laying eggs in a hen? Understanding the time and process of hen's egg production is beneficial for farmers to improve the efficiency of hen feeding and management in chicken farms, and to understand common knowledge such as the physiological performance of hen's eggs, which will help farmers to lay eggs Provide good conditions, let's find out below

Hens generally lay eggs 25-29 hours after ovulation before laying eggs. The eggs in the uterus have sharp ends backward, blunt ends forward, and then make 180 turns, so about 90% of eggs are produced first at blunt ends. After a complete egg is formed, the egg is pushed into the vagina as the uterus contracts and the sphincter of the uterus and vagina relaxes. The vaginal wall is fully dilated. Causes egg-laying movements, including faster breathing and contraction of the abdominal muscles in the posture, which drives the eggs out.

  Originally, the process of egg production in hens was like this. Farmers should pay attention to the feeding and management of hens in the chicken farm to ensure the high efficiency of hens in the chicken farm.


What if the hen is unwilling to lay eggs in the henhouse? In the process of raising hens, farmers will inevitably encounter this problem. That is, hens are unwilling to lay eggs in the henhouse, which causes farmers to pick up eggs yfrequently. This is a headache for farmers. In fact, this is not It is difficult to solve, but the premise is that the farmers must have a good knowledge of chicken breeding technology, and based on the chicken breeding technology knowledge, induce hens in the chicken farm to lay eggs in the henhouse. Let ’s take a look.


1. Fully prepare the egg-laying house: Before breeding chickens are transferred to the egg-laying house, various production facilities in the egg-laying house should be installed and debugged normally. The standard 16 grid egg nest can meet the needs of 64 hens under the premise of reasonable placement and comfortable design. If the uniformity of the flock is very high, the more concentrated the egg laying time is at certain times of the day, the easier it is to lay eggs outside the nest. In this case, care should be taken to increase the nest and adjust the ratio of nest to chicken. Egg nests are best placed before the 18-20 week-old hens are laid to meet the hen's "look for the place to lay eggs", so as to entice the hens. When laying egg nests, the safety and comfort needs of the hens should be taken into account. Place them in a well-ventilated, dark place, and avoid cold, thief-like or strong light. Since the eggs outside the nest mostly appear in the shade under the nest, the arrangement of the bulbs should also be combined when placing the nest to reduce these shadows. Under the premise of meeting the breed requirements, the egg nest should be as high as possible from the ground.

  2. Open the nest as early as possible: In order to prevent hens from staining the litter in the nest, they open the nest only after they see the eggs. I do n’t know if the chickens have not used the nest in the early stage, they will start to produce Find another place before you nest. This will increase the number of eggs outside the nest after opening, so hens should use the nest as early as possible.
  3. Make full use of the nest: from the start of production to the peak of laying, most of the eggs are laid before 11 am, and 60% -80% of the eggs are produced during this time. The demand for nests is very high, so eggs are more likely to appear outside the nest during this time. After the peak of egg production, the daily egg production cycle will be longer, and the demand for egg nests will be reduced accordingly. At this time, if there are too many and overcrowded nests in the house, it will not only increase the eggs outside the nest, but also affect the egg production rate. Therefore, the number of nests can be appropriately increased before the peak period of egg production, and unnecessary nests should be removed in time after the peak period to improve the utilization rate of nests.

  4. Inducing hens to use egg nests: When the flocks are just starting to produce, the breeder should always pay attention to the nesting location of the hens, especially walking around 10 times in the morning, and then turning once every hour until the afternoon. This is The simplest and most effective management method to reduce the eggs outside the nest, otherwise the eggs not picked up in time will have a bad demonstration effect. Usually some darker or stronger walls, corners, windowsills, wet curtain corners, feed line entrances, under the buckets, under the egg nests, etc. are easy to attract the hens to nest. Once the breeder finds the hens in these places, The nest should be corrected in time and gently lifted them into the nest. After repeated interventions, the hen learns to use the nest. At the same time, don't pick out all the eggs in the nest before the laying. You can also place fake eggs in the nest to attract the hens into the nest.

  5. Ensuring consistent sexual maturity of males and hens: From the late stage of rearing, we should pay attention to the sexual maturity of males and hens to ensure that their sexual maturity is synchronized when the hens start to produce. After mixed flocks, the proportion of male and female hens should be checked frequently. Especially at 28-29 weeks, if there are too many cocks, one cock can be eliminated per 200 hens. Otherwise, if the cocks develop earlier than the hens or the proportion of cocks in the early mixed flocks is too much, there will be over-mating, that is, the hens are always avoiding the cocks on the perch, in the nest, and under the nest. Decreasing the fertilization rate of hens and increasing the number of eggs outside the nest will also cause fighting among roosters, which will further increase the death rate of roosters.

  6. Maintain egg nests in a timely manner: Egg nests are prone to breakage during use, especially after the pedals outside the nest are damaged, and hens cannot or are unwilling to enter the nest. Therefore, egg nests should be maintained in a timely manner. First, make sure that the nest is stable and firm, the floor is strong, and the hens do not shake or move after entering the nest. Secondly, the pedals outside the nest should be firm and strong enough to withstand the weight of several chickens at the same time. In addition, the litter in the nest should be added or replaced daily to ensure that it is clean and dry to meet the requirements of hens' comfort, hygiene, and mildew resistance, and to be as different as possible from the ground litter.

  The above is the relevant content of the first agricultural economics editor to solve the hen's unwillingness to lay eggs in the henhouse. These techniques are also the focus of chicken technical knowledge. Farmers should grasp the chicken technical knowledge and be good at using these techniques. To ensure the efficient management of hen feeding.

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