Secondary Plant Metabolites Modulate Nitrogen Excretion
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Solution Overview
Problem
Current methods to reduce nitrogen leaching from farm animals into groundwater, such as using specific plant species or chemical nitrification inhibitors, are either ineffective or costly, and there is a need for a more sustainable and efficient approach to manage nitrogen excretion in animal urine.
Innovation Solution
The use of secondary plant metabolites like acteoside and catalpol in animal feed to modulate nitrogen utilization, reducing the amount of nitrogen excreted in urine and subsequently leached into water sources, without affecting palatability or causing toxic effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If chemical nitrification inhibitors are used to reduce nitrate production, then nitrate leaching is reduced, but the method is costly and has safety concerns regarding residue in milk products
Solution Approach 1:
The patent introduces secondary plant metabolites (specifically tannins and other polyphenols) as intermediary substances that mediate between dietary nitrogen and urine nitrogen excretion. These metabolites act as natural modifiers of nitrogen metabolism in the animal, reducing urinary nitrogen without requiring direct application of chemical inhibitors to the environment or feed. This intermediary approach achieves the nitrogen reduction goal while avoiding the cost and safety issues of direct chemical nitrification inhibitors.
Solution Approach 2:
The patent replaces the mechanical/chemical system of applying nitrification inhibitors (DCD, DMPP) to pasture or feed with a biological system using secondary plant metabolites. Instead of using synthetic chemicals that require careful management and leave residues, the invention uses naturally occurring plant compounds that modify animal nitrogen metabolism through physiological mechanisms, substituting a chemical intervention with a biological one.
2Object-affected harmful factors
If stand-off pads are used to contain and collect animal excrement, then nitrogen leaching is reduced, but the infrastructure cost is significant
Solution Approach 1:
The patent enables the animal itself to serve the function of nitrogen management through dietary modification. By incorporating secondary plant metabolites into the animal's diet, the animal's own metabolism is modified to reduce nitrogen excretion, eliminating the need for external infrastructure like stand-off pads. The system uses the animal's physiological processes, modified by the metabolites, to achieve nitrogen retention, rather than requiring mechanical containment and collection systems.
3Object-affected harmful factors
If plant species with reduced nitrogen content are used in pasture, then urinary nitrogen is reduced, but very few viable low-nitrogen plant species are available
Solution Approach 1:
The patent changes the chemical composition parameters of available pasture plants by selecting for those rich in secondary metabolites (tannins, polyphenols) rather than selecting for low total nitrogen content. This parameter shift allows using common, adaptable pasture species that happen to be rich in these metabolites, rather than requiring rare low-nitrogen species. The key parameter change is from total nitrogen content to secondary metabolite content, which indirectly achieves the nitrogen reduction goal while maintaining plant availability and adaptability.
Data Source
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AI summary
The invention relates to methods, uses and products for modulating nitrogen utilisation in animals. The invention relates to products and animal feeds comprising secondary plant metabolites (such as acteoside, aucubin and catalpol obtainable in Plantago lanceolata animal feeds) and methods and uses thereof for reducing the proportion of total nitrogen excreted in the urine of an animal to the total nitrogen ingested by the animal; reducing the amount of nitrate derived from an animal leaching into ground or surface water; reducing nitrogenous or greenhouse gases derived from an animal; and reducing urinary nitrogen concentration in an animal. This invention has particular application to dairy cows although this should not be seen as limiting.