Broiler Breeding Period Control

First, the pre-production period is light stimulation to 5% egg production rate (155-182 days of age)
This stage is the stage of rapid growth of reproductive organs. Increasing the light time is generally based on the growth and development of the 22-week-old flocks. The following factors should be taken into account in determining the light production program for the due date: Whether the body weight of 22 weeks has reached the standard body weight, whether the nutrient reserve is up to the standard, the number of chickens with V-shaped cross-section in the chest muscles should account for more than 80%, and the number of chickens with 1 or 2 main wing feathers remaining. The number should be more than 80%.
After 23 weeks, do not worry about feeding too much, and add them in small amounts. Overfeeding at this stage will result in abnormal uterus structure, excessive weight, poor egg quality, and low hatching rate, as well as a high percentage of double yellow eggs and increased mortality due to peritonitis or prolapse. Before the egg production rate reaches 5%, feed 2-3 times a week, no more than 3 grams each time. After the egg production rate reaches 5%, feed it every day until it reaches the peak of egg production.
Second, the pre-laying period is 5% egg production - egg production peak (183-210 days old)
This phase is the rising stage of egg production. Both weight and egg weight are increasing. The increase in feed volume must precede the increase in egg production. Otherwise, the hens use their own body fat reserves to supplement nutrients in the feed. The chickens show slow egg production rate. rise. Breeders should obtain sustained weight gain from opening to peak egg production, and they must maintain a certain weight gain (about 15-20 g/week) throughout the egg production period after peak egg production. Feeding principle: The increase in feed must precede the increase in egg production. The main reason for this need is that the egg production rate of many individual hens is higher than the average egg production rate of the flock.
The chickens in the rising stage of egg production should be managed dynamically. According to the daily egg weights, the egg weight curve is drawn and the trend line is added to understand the growth trend of egg weight and guide the feeding.
Third, the peak period of egg production (211-280 days of age)
This stage is the peak period of egg production, and it is necessary to ensure the balance between maintaining physical energy and energy intake. Ensure that chickens can consume enough nutrients every day and that high yields have a material basis. Factors that affect physical fitness include weight, egg production, egg weight, and ambient temperature.
Fourth, late peak (281-462 days old)
In order to maintain the longevity of high-yield breeding hens and maximize the yield of qualified eggs, it is necessary to reduce the material after the peak. If the breeder's feed intake exceeds the required amount, it can continue to gain weight through fat deposition. Fat deposition rate is a key factor affecting egg production rate and fertilization rate after peak period, so the amount of feed should be adjusted according to changes in body weight and egg production rate to adjust the deposition rate of fat. The exact time for breeding a breeder's chickens should depend on the growing history of the flock and the condition of the flock. The first reduction of the chickens with high egg production rate should not be earlier than 34 weeks, and the reduction should be carried out step by step.
After the peak of egg production, there is a plan to reduce the amount of feed, so that the weekly weight gain of the flock is stably maintained at 15-20 g, so that a good egg production rate, fertilization rate, hatching rate, and egg weight can be maintained. Weekly analysis should be based on data such as weight, egg weight, feeding time, number of eggs per day, and status of the flock. The amount of feed should be determined and adjusted according to changes in ambient temperature in the house. The total material loss is about 8%-12% of the peak material quantity. The principle of material reduction: first fast and slow, one week reduction 0.5-1 g/only.

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