Biodegradable Ruminant Bolus for Controlled Methane-Inhibitor Release
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Solution Overview
Problem
Current technologies face challenges in delivering hydrophobic compounds, particularly methane inhibitors, to animals effectively, which are crucial for reducing greenhouse gas emissions and improving animal productivity, as they are difficult to control release via the animal's stomach.
Innovation Solution
A bolus designed for ruminants that incorporates a core containing a methane inhibitor, such as bromoform, mixed with a carrier like paraffin and castor wax, encapsulated by a biodegradable housing made from materials like PLA and PBS, which controls the release of the inhibitor over time, reducing methane production and enhancing animal productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydrophobic compounds are delivered to animals, then methane inhibition and animal productivity improvement are achieved, but controlled release via the animal's stomach is difficult
Solution Approach 1:
The delivery system is segmented into multiple functional layers: an outer housing layer for structural integrity and stomach retention, an intermediate release control layer with specific porosity and hydrophobicity, and an inner core containing the methane inhibitor compound. This segmentation allows each layer to perform its specific function independently, achieving controlled release without excessive overall complexity
Solution Approach 2:
A biodegradable polymer matrix serves as an intermediary between the hydrophobic methane inhibitor and the aqueous gastric environment. This matrix mediates the release process by controlling diffusion rates and protecting the compound from premature release, enabling reliable controlled delivery while simplifying the overall system design
2Object-affected harmful factors
If methane inhibitors are administered to reduce greenhouse gas emissions, then environmental benefits are achieved, but feed conversion efficiency may be compromised
Solution Approach 1:
The system implements periodic action through sustained controlled release of the methane inhibitor over an extended period (e.g., 30-90 days). This continuous low-dose delivery maintains effective methane inhibition in the rumen while avoiding the peaks and valleys of intermittent dosing, thereby preserving feed conversion efficiency alongside emission reduction
Solution Approach 2:
The release rate parameter is precisely controlled through the polymer matrix composition and structure, delivering the methane inhibitor at optimized concentrations that achieve sufficient rumen inhibition without excessive systemic absorption. This parameter optimization ensures both greenhouse gas reduction and maintenance of animal productivity
3Duration of action of moving object
If the bolus is designed for prolonged treatment duration, then regurgitation is prevented, but release control becomes more difficult
Solution Approach 1:
The release control mechanism utilizes composite materials combining biodegradable polymers with specific porosity characteristics and hydrophobic additives. This composite structure provides both the mechanical integrity needed for prolonged stomach retention and the controlled diffusion properties required for precise release rate management over extended periods
Solution Approach 2:
The outer housing employs a flexible biodegradable shell that adapts to stomach movements and prevents regurgitation through its mechanical properties. This flexible shell works in conjunction with the inner release matrix to maintain prolonged treatment duration while allowing controlled substance release through its selective permeability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The bolus effectively reduces greenhouse gas emissions by controlling the release of methane inhibitors, optimizing feed conversion into animal productivity, and providing a prolonged treatment duration without regurgitation, thus addressing environmental and agricultural efficiency challenges.
Implementation Method 1
encapsulated by a biodegradable housing made from materials like PLA and PBS, which controls the release of the inhibitor over time
Implementation Method 2
a core containing a methane inhibitor, such as bromoform, mixed with a carrier like paraffin and castor wax
Data Source
AI summary
The invention provides a delayed release dosage form and a bolus configured for administration to an animal, wherein said dosage form and said bolus is configured to release a hydrophobic substance to the animal over a period of time. Preferably the hydrophobic substance is a haloform. Also provided is the use of the delayed release dosage form or bolus of the invention to reduce methane production in a ruminant animal. Also provided is the method of manufacturing a bolus of the invention.