1. The green shell layer has the characteristics of low weight and high feed return
Regardless of whether the brown-shell and white-shell layers are imported or domestically cultivated, their production performance has reached a peak, with a total egg weight of 18-20 kg at 500 days of age. However, due to the larger body weight of the hens, There are more nutrients for growth and maintenance, and the feed remuneration is not ideal. Each 1 kg of fresh eggs requires 2. 3–2. 4 kg of full feed. The starting weight of the green-shell layer is 1.0 to 1.1 kilograms, and the weight at the end of the laying period is only 1.2 to 1.5 kilograms, and the consumption of feed per kilogram of egg is 1.9 to 2.1 kilograms.
2. Early maturity and prolonged production cycle
According to the characteristics of the breed, starting production early is beneficial to increase egg production, reduce the cost of growing period, and effectively use chicken coops and equipment. At present, the better hybrid layer hens are available, 23-24 weeks old can reach 50% egg production rate, and green-shell layer hens 20-21 weeks old can reach 50% egg production rate (mainly refer to hybrid matching species). The ratio of the rearing period to the laying period of laying hens is 1:2 (the rearing period is 5.5 months, the laying period is I1.5 months), and the green shell layer reaches 1:3 (the breeding period is 4.5 months). , Laying period 12. 5 months), the effective production cycle is extended.
Three, high resistance
Green-shell laying hens are mostly rare local breeds in my country. Even the matching hybrid chicken breeds contain blood of local chickens. They are customarily wild and have strong disease resistance. The survival rate during the rearing period (0-18 weeks of age) is as high as 98% to 99%, and the survival rate of the laying period (19 to 72 weeks of age) is more than 95%, which is much higher than that of modern high-yield hybrid layer breeds (75%- -80%), except for normal epidemic prevention during the entire growth and production cycle, little or no medicine is used. The eliminated chicken and egg products meet the green food standards.
4. Feeding of green shell layers and ordinary layers
With the same conventional feed, the weight of green shell eggs is lower than that of ordinary eggs, with an average egg weight of 45-50 grams. The index of egg shape, egg shell density, and egg shell thickness are consistent with ordinary eggs, in line with normal levels. The green shell egg has a high egg yolk ratio and a low protein ratio (especially the dilute protein ratio), indicating that the green shell egg has better internal quality and high nutritional value. After determination and analysis, green shell eggs are particularly rich in lecithin, cephalin and neurophospholipids, which are important for human nerve development, and also contain many choline substances, which can help increase memory. The ash, calcium, and phosphorus content of green-shelled eggs is higher than that of ordinary eggs, while the water content is lower, indicating that the internal trace element content of green-shelled eggs is much higher than other varieties. At the same time, green shell eggs have a longer shelf life, with a shelf life of 1.5 months above 20°C, 3 months below 20°C, and 6 months cold storage. Green eggs can be supplied in light and peak seasons without special preservation.
5. Alleviate the downturn in the layer industry
At present, my country’s poultry and egg market is in a state of oversupply in a certain sense. In particular, the harmful effects of ordinary eggs on the cardiovascular system of middle-aged and elderly people and the problem of drug residues in egg products are of more concern. The yield of high-yielding layers is high, but most of them are moisture, with poor taste and no unique flavor. The high prices of native eggs and the increase in sales are enough to show that consumers have gradually accepted high-quality eggs, and green-shell eggs will gradually be favored by people because of their rich nutrition. Through several years of hard work, the country, industry, and enterprises have jointly paid attention to the development and research of green shell eggs. Green shell eggs will surely replace more ordinary eggs.
6. Open up green food resources
Green-shelled eggs are known as “Ginseng in Eggs” and are the first egg health food approved by the Ministry of Health (determined by genetic genes, without any processing), and the first to be approved by China Green Food Development Center The egg green food is a natural, non-polluting, natural health food that meets international health food standards. It is not only nutritious and suitable for mass consumption, but also has health care effects for special populations with sub-health conditions. As long as the selection and breeding of green-shell laying hens adhere to the direction of high quality, strictly control the use range and quantity of drugs and additives, several large enterprises jointly carry out industrial production, jointly formulate product standards, and stabilize product quality. In the near future , Green shell eggs will replace more than 50% of ordinary eggs, setting off a green revolution in China’s layer industry.