Feed for laying hens and preparation method thereof

Abstract

The present invention relates to the field of feeds and particularly relates to a feed for laying hens and a preparation method thereof. The feed for the laying hens consists of the following raw materials in weight percentages: corn, peeled soybean meal, cottonseed meal, wheat bran, stone meal, a premix and edible salt; total phosphorus content in the corn, peeled soybean meal, cottonseed meal and wheat bran is larger than 0.35%; wherein each gram of the premix contains 1-alpha-OH-VD3, phytase, VE, VK, VB1, VB2, D-pantothenic acid, nicotinic acid, VB6, VB12, biotin, folic acid, Cu, Fe, Mn, Zn, Se, and the balance premix conventional accessory materials. The high-dose phytase and 1-alpha-OH-VD3 in the prepared feed are synergistically used to enhance digestion and absorption of calcium andphosphorus by the laying hens, can realize complete no addition of calcium hydrogen phosphate, and enables the laying hens to maintain normal production performance, not to suffer from soft leg diseases, and to have no significant differences between death and culling rate and egg production rate.

Description

technical field [0001] The invention relates to the field of feed, in particular to a feed for laying hens and a preparation method thereof. Background technique [0002] In recent years, with the expansion of the breeding scale and the increase in the number of poultry breeding, the pressure of environmental protection is increasing. The pollution of the poultry industry mainly includes harmful substances such as nitrogen, phosphorus, and trace elements. Laying hens need to take in enough calcium and phosphorus to form bones, and the absorption of the two complement each other. Lack of calcium or phosphorus will cause leg diseases and increase the death rate of laying hens. [0003] Grains in laying hen feed contain high amounts of phytic acid (phytic acid). Chickens are monogastric animals, they do not have the ability to synthesize phytase, and cannot utilize phytate phosphorus in grains. Therefore, it is necessary to add phytase to the feed to promote the utilization o...

AI Technical Summary

Problems solved by technology

At present, the amount of phytase added to commercially available feed for laying hens is 300-600 FTU / kg. The defect of this solution is that laying hens cannot make full use of the phytate phosphorus in the grain in the feed. With this addition amount, phytate phosphorus cannot Completely hydrolyzed and absorbed by laying hens, a certain amount of calcium hydrogen phosphate still needs to be added to ensure the supply of phosphorus for laying hens, so that they can maintain better production performance

On the one hand, the addition of additional phosphorus increases the cost, and more importantly, the remaining underutilized phytate phosphorus in the manure increases the pressure on environmental protection

Images