The feeding and management of egg-duck during the egg-laying period is mainly aimed at increasing egg production rate and egg weight, reducing broken eggs, saving feed, and reducing the rate of dead-fishing. According to the age of the duck, the egg production rate and the physiological characteristics, it can be roughly divided into three stages: pre-laying, mid-laying and late-laying. In each breeding phase, different nutrients should be supplied and corresponding management measures should be adopted. To meet the nutritional needs of laying ducks.
First, the egg production management
The pre-laying period (150-300 days of age) focuses on increasing the nutrient concentration and feeding times in the diet to meet the nutritional needs and ensure that the duck group reaches the peak of egg production smoothly. When the egg production rate reaches 50%, 10 grams of fish meal is added to each duck every day. When the egg production rate is 70%, 15 grams of fish meal is added. When the egg production rate is more than 90%, 18 to 20 grams of fish meal is added, and then this is maintained. One 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. In general, 200 days of age, the egg production rate can reach 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 is close to the standard body weight, it shows that the feeding and management are proper; if it exceeds the standard body weight, 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.
Second, mid-term egg production and management
During the middle period of egg production (301-400 days old), the focus is on ensuring high yield of ducks. After the peak period of egg production is maintained to 400 days, the dietary nutrient concentration should be slightly higher than that of the previous period. Each duck adds 22 grams of fishmeal daily. Or feed 20% protein in batches, eat 150 grams each day, but also appropriate to feed more green feed and calcium. Herbs were fed 150 grams per day, or multivitamins were added, and 1% to 2% of granular shell powder was added. The light is stable every day for 16 hours. The temperature is maintained at 5°C 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 are present, indicating that the feed quality is poor, especially if the calcium content is insufficient, or the 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.
Third, rearing and management of laying
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 light is kept at 16 hours per day, and the ducks are circling around in the house 3 times a day, about 5 to 10 minutes each time, and the eggshell mass and egg weight are decreased. When supplemented with 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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