Feed additives for laying hens can be divided into two categories: nutritional and non-nutritive. Nutritional additives are generally used to supplement small or trace amounts of feed nutrients, such as amino acids, vitamins, minerals and trace elements; non-nutritive additives Additives include growth promoters, anthelmintic health care agents, feed preservatives and quality improvers, and other additives, among others.
 
For the selection of commonly used feed additives for laying hens, it is generally necessary to choose some non-antibiotic products, which are not only beneficial to animal health and production performance, but also have no toxic side effects, no residues, and no drug resistance, and have little economic benefits for egg production.
 
It is recommended to choose anti-antibiotic products such as feed acidulants and plant essential oils. It can effectively adjust the balance of intestinal flora of poultry, maintain normal intestinal flora, inhibit harmful bacteria such as Escherichia coli, and promote the growth and reproduction of beneficial bacteria such as lactic acid bacteria and bifidobacteria; improve the utilization rate of feed digestion and reduce the egg production of laying hens. reduce the incidence of diseases such as respiratory tract, digestive tract and intestinal tract, and reduce the death rate; improve the breeding environment and reduce the concentration of ammonia gas in the house.