How many ingredients do laying hens eat a day? How to calculate (including formula)

It is about 12 grams a day at 10 days old, 21 grams at 20 days old, 50 grams at 50 days old, 100 grams at 150 days old, and 100-120 grams at 150 days old.

The weight of feed eaten by different kinds of hens is different, but the laying hens are calculated according to their survival age, and the amount of feed eaten by laying hens is different in each period of time. The cumulative feed consumption of a hen is about 8.84kg at 150 days old and about 36.50kg at 550 days old.

1. How many ingredients do laying hens eat a day

1. Before the age of 10 days: daily feed consumption = number of days + 2, for example, the daily feed consumption of 10-day-old laying hens is 10-2-12 grams.

2. 11-20 days old: daily feed consumption = number of days + 1, for example, the daily feed consumption of 20-day-old laying hens is 20-21 grams.

3. 21-50 days old: daily feed consumption = number of days, for example, 50 grams of daily feed for 50-day-old laying hens.

4. 51-150 days old: daily feed consumption = 50 + (age-50) / 2, for example, the daily feed consumption of 150-day-old laying hens is 50 + (150-50) / 2100 grams.

5. Over 150 days old: the daily feed consumption of laying hens over 150 days old should be stable at 100-120 grams.

2. Reasons for depilation of laying hens

1. Nutritional reasons

The main results are as follows: (1) the lack of feeding energy in the feeding process will lead to dermatitis and folliculitis in laying hens, and then begin to peck feathers and depilate. If the stored corn has high moisture content and macromolecular polysaccharides that can not be absorbed, it is easy to cause long-term diarrhea or depilation due to lack of energy.

(2) the lack of sulfur amino acids in laying hens is also easy to cause depilation, and the lack of protein will affect the synthesis of keratin, which will lead to slow growth and body hair loss in laying hens.

(3) if the content of zinc in feed is too high, it will lead to a significant decrease in the amount of food eaten by laying hens, and it will also lead to molting.

(4) if the content of selenium and arsenic is too high, it will cause chronic poisoning in laying hens.

(5) excessive salt content in feed may also lead to chronic salt poisoning and feather shedding in laying hens.

2. Poor management

The main results are as follows: (1) layers will peck and shed their hair when they don't have enough to eat for a long time, and the lack of water in summer will lead to serious stress reaction and depilation, and it will also affect the decline of egg production. The distance between the layers' cages should be enlarged, and the small distance will lead to the breaking or shedding of the feathers in the layers' neck.

(2) during the peak laying period, the estrogen in the body will decrease and the layers will change their feathers.

(3) the decrease of laying rate will lead to depilation due to the different time of light, especially at the turn of spring and summer, due to the sudden increase of light, it will lead to stress reaction, which can easily lead to feather pecking and depilation.

(4) Chicken lice and mites are ectoparasites often infected by caged laying hens in autumn and winter, which can cause laying hens to peck off their own feathers or hurt themselves.

(5) scabies mites can inflame the skin of chickens, resulting in layers often pecking at the feathers, resulting in all feathers in places with scabies mites.