In common laying hen breeds, the egg production rate rose from 85% to a peak of 93% to 97%, and then slowly dropped from the peak to about 85%, which lasted no less than 18 weeks. When the peak period of egg production is less than 18 weeks, different groups are maintained at 16-18 weeks, most of which are caused by differences in breeds, strains, and insufficient feed nutrition. Sometimes improper feeding and management can also lead to shorter peaks of egg production. When there are problems with different varieties or strains of different batches, the reasons should be found from the level of feed nutrition and management.
Only 14 to 16 weeks of egg production peak, more common in feed nutrition or feed nutrition imbalance, and poor feeding and management. The peak period of egg production is only 8 to 14 weeks, and it is more common in chickens that develop disease during the breeding period.
However, if the peak period of egg production is less than 8 weeks or even less than 4 weeks, it is called the peak period of abnormality. The first consideration should be given to whether or not the chicken has developed an epidemic disease during the peak period of egg production. Such as Newcastle disease, H9 bird flu, egg syndrome, E. coli disease, chronic respiratory diseases.
In the production practice, it is also very important for the day-to-day management of the chicken farm. Therefore, it is necessary to strengthen the feeding management and improve the quality of the breeder.
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