1 adjust the chicken
Laying hens manually assisted high-yield forced moulting 1 week before the start. First, we must eliminate sick, weak, and residual chickens, and inject Newcastle disease I (2 times the amount), avian influenza H5, H9 vaccine. Select a certain number of chickens for weighing (usually 2% of the flock is appropriate), and calculate the average body weight, as the basis for determining the artificial assisted moulting theory time of laying hens (also called these when weighing next time) chicken).
2 stop eating and water
The artificial assisted moulting and high-yield breeding method for laying hens begins, and the flocks are stopped for 10-15 days and stopped for 3 days (the specific time should be flexibly controlled according to the weight loss and hair removal of the birds). 1 day before stopping the water, each chicken was fed 10g of stone powder to reduce the generation of broken eggs, and at the same time stop artificial light. After the end of the cycle, the normal water supply was restored, artificial light was used for weighing.
3 determine the weighing
In order to accurately grasp the weight loss of the chicken, weighed once on the 5th day after the break. Therefore, the next weighing time is determined according to the weight loss of the flock.
4 resume feeding
When 80% of the chickens in the flock lose 28% to 30% of their body weight, they begin to resume feeding. And to feed high-protein feed, supply sufficient methionine, gypsum powder, promote the rapid regeneration of feathers, and resume production as soon as possible. The specific feeding criteria are: 11kJ per kilogram of eclipse, 16%-17% crude protein content, 3%-4% calcium content, and 0.7% phosphorus content. The feeding requirement for laying hens is: feeding 1/3 of the original diet on the first day, feeding 2/3 of the original diet on the second day, and returning to normal feeding on the third day.
5 notes
The use of artificial assisted forced moulting high-yield breeding method as long as the timing is good, the mortality rate will generally not exceed 3%; if the mortality rate of the laying hen is more than 3%, it is abnormal, should promptly identify the cause, take necessary measures to adjust the treatment .
6 production benefits
After the artificial feeding of the laying hens is forced to change the feeding method for one week, the laying hens can start laying eggs, and the egg production rate can reach 50% after the first week. In general, the second laying period of laying hens can be used for about 270d. Although the egg production rate is reduced by 10%-20% compared with the first laying period, the egg weight can be increased by 10%. The feeding time should be based on the benefit. set. -- Poultry Science
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