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Feeding control of different ducks in different laying periods
First, the increase of the amount of feed in the early stage of production of laying eggs should abide by the principle of gradual and orderly progress. Common mother ducks start egg production at 21-22 weeks of age. After the laying of eggs, each duck should increase feed by 5 to 10 grams per week according to the weight of the male and female ducks, so as to promote the duck group to achieve an egg production rate of 5% as soon as possible. In the production practice, some farmers are eager to start production in advance, increase the egg weight of the first egg production and advance the peak of egg production, and rapidly increase the amount of feed during the initial period of egg production. Sometimes, the maximum feed is reached in 25 weeks. Quantity, this will inevitably affect the economic efficiency of the entire laying period. First of all, too early production, combined with a large initial egg production, is likely to cause the mother's rectal prolapse; Second, the body maturity and sexual maturity of the breeding duck is inconsistent, especially the male duck, although there is sexual desire, but also to crawl, but its semen Poor quality, generally lower hatching rate of fertilized eggs. Second, in the pre-laying period, the rising period of egg production in the early stage of egg production, the feed amount increases rapidly to induce the duck group to reach the peak of egg production as soon as possible. The maximum amount of feed should be made within 2 to 3 weeks before the peak of egg production. If the increase of feed amount is delayed, the loss of egg production will be 2% to 3%. At this point, it should be checked whether the duck's egg production reaches a peak. The method is: adopting tentative feeding method, each duck increases 1% to 5% more material, and even feed 4 days to observe the change in laying rate, if the laying rate increases, then the increased amount of feed is fed; such as laying eggs The rate did not change and immediately returned to the original feed amount. This method can be used multiple times. Third, in the production of egg peak period In the production practice, in order to make the peak of the egg production period come on time, the maximum amount of eggs in the early stage of the egg production is generally 10% to 15% higher than the required amount of duck eggs in this season. Do not reduce the amount of feed during the peak period of the whole production, and always maintain the highest level. However, after the arrival of the peak of production, the 10% to 15% higher feed amount must be subtracted. Otherwise, the duck will be easily over-fed, especially if the duck will have difficulty crawling or do not want to crawl, the female duck will also Due to over-fertilization, the egg production rate decreased. After the peak period, the reduction should be combined with the age of the laying eggs, the egg production rate, and the weight of the eggs. The egg production should be started 2 weeks after the egg production no longer rises, usually starting at 31 to 32 weeks of age. The average daily feed consumption of each duck was reduced by 10 to 15 grams. After 2 weeks, the feed amount of the duck was stabilized at the maximum amount of feed required, and constant feed was adopted. Fourth, after the 48-week-old egg-laying duck, the egg-laying rate began to decline at a rate of 1%-2% per week. Since the female duck has reached full maturity, and the egg weight remains stable, the demand for nutrients from the female duck begins to decrease. Therefore, from 48 weeks onwards, the stocking rate should gradually decrease as the laying rate decreases. Reduced materials can also adopt a tentative reduction method: that is, the average daily feed consumption of each duck is reduced by 4 days. If the decline in egg production during this period is normal and the reduction is correct, feed should be fed in the reduced amount. This method is repeated every 10 days. Under normal circumstances, the daily feed level of the rearing duck is 80% to 85% of the peak feed amount.