Eggs with yellow, dark red, orange, etc. yolks are called "red eggs". Production of "red eggs" can not only meet the needs of domestic consumers, but also meet the needs of exports. The current regulations for the export of eggs and duck eggs have reached the “8th grade†in compliance with international standards. The egg-yellow grade is divided into 15 grades from light to dark, with light color grades and dark color grades. Egg-yellow grade can be improved by feed. The method is described below.
1. The whole plant system for dry powder application contains 250 mg of lutein, 30 mg of lutein, 200 mg of zeaxanthin and 320 mg of carotenoid per kilogram. Add 5% of alfalfa meal to the diet, and increase the level of egg-yellow from level 1 to level 4. Chickens and ducks are available.
2. During the jointing stage, the ryegrass are cut and the dry powder contains 200-343 mg of carotenoids per kilogram. Adding 5% ryegrass powder to the hens' rations will increase the egg yolk level from grade 6-7 to grade 11. Duck duck can refer to applications.
3. Concentrated grasses are used as dry powders and contain more crude protein than alfalfa. The addition of 5% polymer grass powder to the diet can increase the egg yellow level by 6 levels. Chickens and ducks are available.
4. The application of yellow corn seeds after crushing contains 30 mg of carotenoids per kilogram. In the compound feed, yellow corn flour accounts for 60%, and egg yellow color can be increased from 1 to 8 grades. Chickens and ducks are available.
5. 492 mg of carotenoid per kilogram of carrot and 527 mg of lutein. Adding 20% ​​fresh carrots to the diet can significantly increase the egg-yellow level. Chickens and ducks are available.
6. Cucurbits are succulent feeds containing 65 mg of carotenoid per kilogram and more lutein. Appropriate feeding can effectively increase the egg-yellow level. Chickens and ducks are available.
7. The green hedgehog leaves system is used for dry powder applications, rich in lutein, chlorophyll and vitamin A. Adding 5% Locust leaf powder to the diet can increase the egg yellow color from grade 1 to grade 9. Chickens and ducks are available.
8. Appropriate feeding of leeks can make the egg yellow apricot or orange. Chickens and ducks are available.
9. Both squid powder and squid powder contain more shrimp red pigment and alfalfa grass. When fed in appropriate amounts, the yolk coloring effect can reach three “+†signs. Chickens, ducks and geese are available.
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