Environment-friendly laying hen feed for source emission reduction of agricultural source total nitrogen and total phosphorus pollutants

Abstract

The invention relates to an environment-friendly laying hen feed for source emission reduction of agricultural source total nitrogen and total phosphorus pollutants and application thereof. The layingperiod of laying hens is divided into a pre-laying stage and a post-laying stage, and two corresponding feeds and two corresponding premixes are prepared. Through the systematic scientific application of comprehensive measures, under the premise of ensuring the good performance of the laying hens, the digestive utilization of crude proteins is improved so that the amount of protein materials suchas soybean meal is reduced, and the digestive utilization of phytate phosphorus is improved so that the use of exogenous phosphate mineral additives such as inorganic phosphates is avoided or reduced, and consequently the source emission reduction of agricultural source total nitrogen and total phosphorus pollutants is achieved.

Description

technical field [0001] The invention relates to the field of animal husbandry and animal nutrition feed, in particular to an environment-friendly laying hen feed, premix and application thereof for emission reduction of total nitrogen and total phosphorus pollutants from agricultural sources. Background technique [0002] With the development of large-scale and standardized breeding, the wastes discharged from livestock and poultry production have an increasing impact on the environment, especially the pollution caused by nitrogen and phosphorus discharges. At present, animal husbandry has become the national total nitrogen and phosphorus discharge. One of the key regulatory industries. The nitrogen in livestock and poultry manure mainly comes from undigested crude protein; the phosphorus in livestock and poultry manure mainly comes from undigested phytate phosphorus and inorganic phosphate phosphorus. In the production of laying hens, in order to ensure the large egg produ...

AI Technical Summary

Problems solved by technology

The laying hen diet with phosphorus added usually has the following components by weight: 61-63 parts of corn, 25-28 parts of soybean meal, 8-10 parts of stone powder, 0.1-0.13 parts of methionine, 0.8- 1 part, 0.3 parts of sodium chloride, 0.01-0.02 parts of phytase, 0.05-0.1 parts of choline chloride, 0.02-0.03 parts of multivitamins, 0.1-0.2 parts of compound trace elements, and the rest are generally zeolite powder. The total nitrogen content of the feed is 2.6-2.8%, and the total phosphorus content is more than 0.6% (dry matter basis). First, it does not meet the reasonable nutritional needs of laying hens according to the production stage, resulting in the dietary nutrient concentration of crude protein and total phosphorus. Too much waste in the later stage of laying eggs, the second is the low utilization rate of crude protein provided in the feed, and the third is the low efficiency of the common phytase used to enzymatically hydrolyze phytate phosphorus. The above three reasons lead to the crude protein, Phosphorus nutrients cannot be fully utilized and become total nitrogen and total phosphorus pollutants in agricultural sources

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