Tips for raising green-shell laying hens to improve their laying rate

1. Use scientific light. In the first month of laying, the daily cycle is changed to 28 hours, and according to 12 hours of light and 16 hours of darkness, the average egg weight can be increased by 10%, and the eggshell is strong, with few small eggs.

2. Cut the crown of the chick at the right time. Cutting off the chicken crown within 24 hours after coming out of the shell, or when the chicken can distinguish between male and female, selecting the female chick to cut off the chicken crown can not only save feed, but also avoid various crown injuries of adult chickens, and increase the laying rate of hens after laying.

3. Daily feeding times. Modern studies have shown that yolks and whites of eggs are formed during the day, while shells are formed in the afternoon or at night. Laying hens should be fed twice a day, and the content of calcium should be increased for dinner. Breakfast contains 19% Murray 19.5% crude protein per kilogram of feed and 5.5% Murray 6% calcium, which can not only adjust the laying cycle, increase egg production, but also save feed.

4. Eliminate low-yield chickens. When the chickens were 38 weeks old, 50 weeks and 65 weeks old, the elimination of low-yield chickens was beneficial to improve the production environment of the flock. The characteristics of low-yield chickens are as follows: the crown is dry, wrinkled and pale, and the head, beak and neck are obviously yellow.

5. Supplement phosphorus and trace elements. The addition of 10 kg calcium hydrogen phosphate per ton of feed could reduce the fatigue mortality of green shell laying hens. Under the condition of heat stress, phosphorus is necessary to maintain high survival rate, growth rate and laying rate. During the peak egg laying period of caged chickens, the content of available phosphorus in the diet was 0.45%, 0.5% (0.65%, 0.75%), and 0.4% (0.75%, 0.75%). During the whole growing period, the content of available phosphorus in the diet of Chinese chickens was maintained at 0.5%. The addition of appropriate amount of zinc to the dry feed of laying hens can increase a variety of enzymes in the liver and increase the laying rate. if an appropriate amount of manganese is supplemented in the feed, the number of soft shell eggs can be significantly reduced.

6. Cut off the beak at the right time. There are three better periods for beak cutting in chickens: 9 weeks old, 14 weeks old, and 20 weeks old, combined with flocks and cages. Or the beak of previously severed chickens can be trimmed or trimmed, that is, those with missing cut, beak length, beak tip or beak deformation can be repaired or trimmed.