In the process of technical service, the author found that many laying hens are blind in the accurate use of laying hens, most of which are based on estimates. It should be known that excessive use of materials can easily lead to over-fertilization and premature delivery of the laying hens (especially in the middle chicken stage), and even cause waste of feed and increase the cost of breeding; too few can hardly reach the standard egg-laying condition, or the eggs in the laying period. Small, the egg production rate is not high, and the breeding efficiency is poor. In addition, in the prevention and treatment of diseases in laying hens, it is especially important to accurately calculate the materials. The following describes a calculation formula for the reference of the majority of farmers:
Before 10 days of age: daily feed amount = number of days + 2, such as 7-day-old egg chick daily feed amount is 7 + 2 = 9 grams.
11 to 20 days old: daily feed amount = number of days +1, such as 15 days old egg chicken daily feed amount is 15 + 1 = 16 grams.
21 to 50 days old: daily feed amount = number of days, such as 30-day-old egg chicken daily feed amount is 30 grams.
51 to 150 days old: daily feed amount = 50 + (day number - 50) ÷ 2, such as 100-day-old eggs, the daily feed amount of chicken is 50 + (100-50) ÷ 2 = 75 grams.
The daily feed capacity of laying hens over 150 days of age should be stable at 100-12 grams.
In this way, the cumulative consumption of a hen by a hen at 150 days is about 8.84 kg, and the cumulative amount of feed to a 550-day-old is about 36.50 kg . Of course, the amount of materials used in different varieties and seasons should be slightly different.
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