Feeding and management techniques of breeder ducks during laying period

The early stage of egg laying

The increase of feed amount at the initial stage of laying should follow the principle of increasing step by step. Generally speaking, female ducks begin to lay eggs at the age of 21 mi 22 weeks. After laying eggs, the feed supply should be increased by 10 g per duck per week according to the weight of male and female ducks, so as to promote the ducks to reach an egg laying rate of 5% as soon as possible. In production practice, in order to unilaterally pursue the advance of laying (some breeding ducks begin to lay eggs in about 135 days), the egg weight of the first laying eggs and the advance of the peak of egg production, some farmers rapidly increase the amount of feed at the initial stage of egg laying, and sometimes reach the maximum feed quantity at the age of 25 weeks, which is bound to affect the economic benefits of the whole laying period. First of all, the beginning of laying too early, coupled with the initial egg production is too large, easy to cause prolapse of the anus of female ducks; secondly, breeding ducks are not consistent with sexual maturity, especially male ducks, although they have sexual desire, they also climb hips, but their semen quality is poor and the hatching rate of fertilized eggs is generally low.

Early stage of egg laying

During the rising period of egg production in the early stage of laying, the amount of feed should be increased rapidly to induce ducks to reach the peak of egg production as soon as possible. In the 3 weeks before the peak of egg production, the feed volume should reach the maximum value. If the increase of feed volume is delayed, the egg production will often lose 2% Mel 3%. At this time, mushroom four check whether the laying rate of female ducks has reached its peak. The method is to adopt the exploratory feeding method: each duck is fed with a further 5murl% feed, and the change of the laying rate is observed after 4 days of continuous feeding. If the laying rate increases, it will be fed according to the increased feed quantity. If the laying rate does not change, it will immediately return to the original feed quantity. This method can be used many times.

Peak period of egg production

In production practice, in order to make the peak period of egg production come as scheduled, the maximum amount of feed in the early stage of egg production is generally 10% higher than that required during the peak laying period of this breed of ducks. In general, do not reduce the amount of feed during the peak period of egg production, and always maintain the highest level. However, after the peak of egg production, the feed amount of 10% more than 15% must be reduced, otherwise it will easily lead to overweight breeding ducks, especially when it is difficult for males to climb hips or unwilling to climb hips, and female ducks will also reduce the laying rate due to overweight. The weight reduction after the peak period should be combined with egg production week age, egg laying rate, egg weight and so on. 2 weeks after the egg production rate no longer rises, the diet should be started at the age of 32 weeks. At this time, the egg weight should also be above, and the range of feed reduction can be greater. The average feed consumption of each duck was reduced by about 10ml / 15g. After 2 weeks, the feeding amount of breeder ducks was stabilized at the maximum amount of feed needed, and then fed with constant feed.

Late stage of egg laying

After the age of 48 weeks, the laying rate of meat ducks began to decline at a rate of 1% per week. As the elbow female duck has reached full body maturity and the egg weight remains stable accordingly, the nutrition demand of female ducks begins to decrease. If the amount of compensation is not reduced at this time, it is bound to cause fat deposition, so that the female duck body shape is too fat, resulting in a sharp decline in egg laying rate in the later stage, resulting in a waste of feed. Therefore, the diet should be reduced gradually with the decrease of laying rate from the age of 48 weeks. The method of tentative reduction can also be adopted, that is, the average daily feed consumption of each duck can be reduced for 4 days. If the egg laying rate decreases greatly during this period, the raw material quantity should be restored immediately; if the decrease is normal, it is proved that the reduction is correct, and it should be fed according to the reduced feed. This method is repeated every 10 days. In general, the daily feeding amount of breeder ducks in the late laying period is 80% of the peak feeding volume. 85%.