(1) Feeding management in the early and early stages of egg production. The initial stage of laying (150-200 days of age) and the previous period (201-300 days of age) focus on increasing the nutrient concentration and feeding times in the diet; meeting the nutritional needs and pushing the egg production to the peak. On the basis of appropriate diet formula, when the egg production rate reaches 50%, 10 grams of fish meal is added to each duck per day: 10 grams of fish meal is added when the egg production rate is 70%; 18 to 20 eggs are added when the egg production rate is more than 90%. Fish meal, after maintaining this level. The number of feedings increased from 3 times a day to 4 times, 3 times during the day and 10 times a night. The average light 14 hours, and should gradually increase from short to long. The larger the duck eggs during this period, the faster the increase in production, indicating that the better the feeding and management. Otherwise, identify the reasons in a timely manner and improve them. The egg production rate has gradually increased, especially in the early spring when the duck production rate rises faster. Usually 200 days of age (up to 300 days of age), the egg production rate of up to 98%. If the egg production rate goes up or down or even declines, it is due to feeding. Samples are weighed once a month (in the case of fasting ducks in the morning) once, if the average body weight receives the standard body weight, it shows that the feeding and management are proper; if the standard body weight is exceeded, it indicates that the excess nutrients should be reduced or increased the proportion of coarse material; if it is lower than the standard body weight, It shows that lack of nutrition should improve feed quality.
(2) Mid-term feeding and management of laying. The middle period of egg production (301-400 days old) focuses on ensuring high yield of ducks, and strives to maintain the peak period of egg production until 400 days. The concentration of dietary nutrients should be slightly higher than that of the previous period. Each duck should add 22 grams of fishmeal daily, or The batch of 20% protein was fed 150 grams each day, and some green feed and calcium were also fed properly. Each herb feeds 150 grams per day or multivitamins, and 1 to 2% of granular shell powder is added. The light is stable every day for 16 hours. The temperature is maintained at 5 to 10°C. If it exceeds or falls below this standard, adjustments should be made. Routine operating procedures remain stable. At this time, if the shell is smooth, thick and shiny, it means good quality. If the egg shape becomes longer, the shell is thinner and translucent, there are sand spots, and even soft shell eggs appear, indicating that the quality of the feed is poor, especially if the amount of calcium is insufficient, or vitamin D is lacking, it should be supplemented. If the egg production period is about 2 o'clock in the middle of the night, the egg production time is concentrated, and the production of eggs is neat, indicating proper feeding and management. Otherwise, measures should be taken promptly.
(3) rearing and management of laying eggs. The key point is to determine the quality of the feed and the amount of feed based on the weight and egg production rate of the ducks in the late stage of laying (401 to 500 days of age). If the duck production rate is still more than 80%, and the weight of the duck is slightly reduced, animal feed should be properly added in the feed; if the weight increases, the metabolic energy in the feed should be appropriately reduced or the feed intake should be controlled; If the body weight is normal, the crude protein in the feed should be slightly increased compared to the previous stage; the luster should be maintained at 16 hours per day, and the ducks should move around in the house three times a day, about 5 to 10 minutes each time, and the eggshell mass and egg weight decrease. , supplements cod liver oil and minerals. Keep the microclimate and operational procedures in the duck house relatively stable and avoid stress reactions.
(2) Mid-term feeding and management of laying. The middle period of egg production (301-400 days old) focuses on ensuring high yield of ducks, and strives to maintain the peak period of egg production until 400 days. The concentration of dietary nutrients should be slightly higher than that of the previous period. Each duck should add 22 grams of fishmeal daily, or The batch of 20% protein was fed 150 grams each day, and some green feed and calcium were also fed properly. Each herb feeds 150 grams per day or multivitamins, and 1 to 2% of granular shell powder is added. The light is stable every day for 16 hours. The temperature is maintained at 5 to 10°C. If it exceeds or falls below this standard, adjustments should be made. Routine operating procedures remain stable. At this time, if the shell is smooth, thick and shiny, it means good quality. If the egg shape becomes longer, the shell is thinner and translucent, there are sand spots, and even soft shell eggs appear, indicating that the quality of the feed is poor, especially if the amount of calcium is insufficient, or vitamin D is lacking, it should be supplemented. If the egg production period is about 2 o'clock in the middle of the night, the egg production time is concentrated, and the production of eggs is neat, indicating proper feeding and management. Otherwise, measures should be taken promptly.
(3) rearing and management of laying eggs. The key point is to determine the quality of the feed and the amount of feed based on the weight and egg production rate of the ducks in the late stage of laying (401 to 500 days of age). If the duck production rate is still more than 80%, and the weight of the duck is slightly reduced, animal feed should be properly added in the feed; if the weight increases, the metabolic energy in the feed should be appropriately reduced or the feed intake should be controlled; If the body weight is normal, the crude protein in the feed should be slightly increased compared to the previous stage; the luster should be maintained at 16 hours per day, and the ducks should move around in the house three times a day, about 5 to 10 minutes each time, and the eggshell mass and egg weight decrease. , supplements cod liver oil and minerals. Keep the microclimate and operational procedures in the duck house relatively stable and avoid stress reactions.
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