Compound premix for laying hens at laying stage used for formulating low-protein-content diet and application thereof

Abstract

The invention provides a compound premix for laying hens at peak laying stage used for formulating low-protein-content diet. The compound premix for the laying hens at peak laying stage used for formulating the low-protein-content diet comprises the following ingredients: vitamins, trace elements, amino acids, phytase, stone powder, calcium hydrogen phosphate, microecological additives and so on. Based on an ideal amino acid model of the laying hens, amino acid monomers are supplemented so as to improve the utilization rate of soybean meal protein, as well as reduce the use proportion of the soybean meal in a full-price feed. Animal tests have proven that no significant differences have been observed for the production performances, namely egg weight, egg yield rate and egg-feed ratio of the laying hens fed with the full-price diet formulated by using the premix and the laying hens fed with conventional crude-protein-level diet; moreover, the nitrogen emission in faeces is obviously reduced, so that the chicken house environment is beneficially improved and the environmental pollution is reduced. The compound premix for the laying hens at peak laying stage effectively reduces feed costs, and improves comprehensive economic benefits of laying hen breeding.

Description

technical field [0001] The invention relates to a compound premix for laying hens during the laying period, in particular to a compound premix for laying hens used for preparing low-protein rations. Background technique [0002] After experiencing rapid development, my country's laying hen breeding industry has entered the stage of transformation and upgrading. The two problems of feed and manure, one in and one out, have seriously affected the economic benefits of laying hen farming and the sustainable development of the industry. A large number of studies have shown that reducing the amount of soybean meal in the diet, increasing the utilization rate of amino acids in soybean meal, and reducing fecal ammonia nitrogen emissions can effectively alleviate the above problems. However, simply reducing the amount of soybean meal in the diet will affect the production performance of laying hens. Although the use of high-protein raw materials such as fish meal and meat and bone me...

AI Technical Summary

Problems solved by technology

However, simply reducing the amount of soybean meal in the diet will affect the production performance of laying hens. Although the use of high-protein raw materials such as fish meal and meat and bone meal to increase the crude protein content of the premix can avoid the decline in production performance, the total crude protein level in the diet has no effect. This will not only increase feed costs, but also cause waste of amino acids, increase fecal ammonia nitrogen emissions, and pollute the environment

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