Feed additives for laying hens and their applications

Abstract

The invention discloses a feed additive for laying hens and its application, which can obtain eggs with high selenium, high zinc, high iron and the like without damaging the function of the chickens, changing the taste of the chickens, and causing the chickens to produce adverse reactions; the method comprises the following steps: Additive I consisting of sodium alginate, selenium-enriched yeast, selenomethionine, selenocysteine, and additive II consisting of astragalus, pueraria, Gynostemma esculenta, shrimp shell powder, ramie leaf powder, lotus leaf powder; One month after the laying period of laying hens, additive I and additive II were added alternately to the feed to keep the selenium content in the eggs between 0.35㎎ / ㎏~1.65㎎ / ㎏; Compared with ordinary eggs, the cholesterol content of eggs is reduced by more than 35%, the protein content is increased by more than 25%, and the content of selenium, zinc, iron and calcium is greatly increased, and the chicken body function of the laying hens is not damaged, and the laying hens have no adverse reactions. The taste of the original chicken was also maintained.

Description

technical field [0001] The invention relates to the production of a feed for poultry, in particular to a feed additive for poultry and its application, in particular to a feed additive for laying hens and its application. Background technique [0002] Feed additives refer to the addition of a small or trace amount of nutritive or non-nutritive substances to feed in order to improve feed utilization, ensure or improve feed quality, meet the nutritional needs of animals, promote animal growth, and ensure the health of animals. In poultry farming, especially in laying hen breeding, the scale of decentralized laying hens is generally around 10,000 feathers, and the cost of feed and management is relatively high. In addition, the price of eggs and other agricultural products such as pork has been low in recent years. In addition, often due to the occurrence of avian influenza virus, the poultry are killed by mistake, which leads to the depression of the farmers, and many farmers ...

AI Technical Summary

Problems solved by technology

[0005] However, according to experiments, after feeding the laying hens with feed added with different elements for a period of time, while obtaining eggs with high selenium, high zinc, high iron, etc., the laying hens will suffer from lack of energy, severe hair loss, decreased appetite, and reduced feed intake. and other phenomena, the egg production rate will drop by 15% to 20%, and the taste of the chicken will be poor; if the feeding time is long, the mortality rate will increase by more than 10%