Lighting Control System for Delaying Boar Sexual Maturation
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Solution Overview
Problem
Boar taint, an unpleasant odor in boar meat caused by sexual maturation, is a significant issue in pork production, and current methods like castration are either welfare-concerning or consumer-unwanted, necessitating a solution to delay sexual maturation without affecting animal welfare.
Innovation Solution
A control system that dynamically adjusts artificial lighting conditions for boars by increasing blue content, photo-period, and light intensity to delay sexual maturation, utilizing a controller that monitors sexual maturity through various signals from sensors, thereby mimicking less favorable breeding conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If castration is performed to prevent boar taint, then boar taint is prevented, but animal welfare deteriorates
Solution Approach 1:
The patent replaces the mechanical intervention of castration with an optical system (lighting device) that uses light emission to delay sexual maturation. The controller adjusts lighting parameters (intensity, spectrum, photoperiod) to influence the boar's endogenous melatonin production, thereby preventing boar taint development without physical or chemical castration, maintaining animal welfare.
Solution Approach 2:
The patent changes the lighting parameters (intensity, spectrum composition, photoperiod duration) dynamically throughout the growing cycle. By adjusting these optical parameters, the system influences the boar's physiological state and delays sexual maturation, achieving boar taint prevention without castration.
2Object-affected harmful factors
If chemical castration substances are administered to prevent boar taint, then boar taint is prevented, but consumer acceptance deteriorates
Solution Approach 1:
The patent substitutes chemical substances with an optical field (light) as the intervention mechanism. The lighting device emits light with specific characteristics controlled by a controller, influencing the boar's physiology through photobiological effects on melatonin production, thereby preventing boar taint without chemical residues that would affect consumer acceptance.
3Object-affected harmful factors
If physical castration is performed to prevent boar taint, then boar taint is prevented, but weight-to-feed efficiency deteriorates
Solution Approach 1:
The patent implements a dynamic lighting system where the controller continuously adjusts lighting parameters (intensity, spectrum, photoperiod) based on the growing cycle stage and the boar's developmental state. This dynamic optical intervention delays sexual maturation progressively, maintaining growth efficiency without the permanent physiological impact of castration.
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
This approach effectively reduces or prevents boar taint by maintaining the boars in a less sexually mature state at slaughter, improving meat quality while maintaining animal welfare.
Implementation Method 1
control a lighting device to illuminate the at least one boar with a light recipe
Implementation Method 2
Endogenous melatonin production may be one of the regulators for this development. Signify has significant experience in regulating melatonin production with lighting conditions.
Data Source
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Figure 3~4
AI summary
It is an object of the invention to provide an improved control system (10) for adapting a light recipe in a growing cycle of at least one boar (40), so as to delay sexual maturation of said at least one boar, which at least alleviates the problems and disadvantages related to boar taint. Thereto, the invention provides a control system for adapting a light recipe (21) in a growing cycle of at least one boar to delay sexual maturation of said at least one boar, wherein the control system comprises a controller (11) configured to: control a lighting device (20) to illuminate the at least one boar with said light recipe; obtain a first signal indicative of a sexual maturation level of the at least one boar; control, upon determining that the sexual maturity level of the at least one boar exceeds a predefined sexual maturity level, the lighting device to adapt said light recipe by (i) increasing a blue content of a spectrum of said light recipe, (ii) increasing a length of a photo-period of said light recipe, and/or (iii) increasing a light intensity of said light recipe.