Early Egg Candling for Pathogen Reduction in Poultry Hatcheries

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Solution Overview

Problem

Current egg candling systems in poultry hatcheries struggle to accurately distinguish non-viable eggs, leading to contamination and increased pathogen incidence, necessitating antibiotic use.

Innovation Solution

Implementing an early egg candling process between Days 9-12 of incubation to remove non-viable eggs, utilizing advanced candling technologies like spectroscopy and heartbeat detection, followed by mechanical removal to reduce pathogen contamination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If traditional egg candling is performed late in incubation (Day 18), then the candling system has more time to detect non-viable eggs, but pathogen contamination increases due to longer incubation of non-viable eggs

Engineering Contradiction:

Improvecandling detection accuracyVSAvoidpathogen contamination

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary action by performing egg candling earlier in the incubation cycle (Day 9-12) rather than waiting until Day 18. This early detection and removal of non-viable eggs prevents them from serving as incubators for pathogens during the remaining incubation period, thereby reducing pathogen contamination while maintaining detection accuracy through advanced spectroscopy and heartbeat detection technologies

Inventive Principle:

Principle #10Preliminary action

2Object-affected harmful factors

If non-viable eggs are removed early in incubation (Day 9-12), then pathogen load is significantly reduced, but the candling system must achieve higher detection accuracy under tighter time constraints

Engineering Contradiction:

Improvepathogen loadVSAvoidnon-viable egg detection accuracy

Core Design Contradiction:

Object-affected harmful factorsVSMeasurement precision

Solution Approach 1:

The patent replaces traditional mechanical candling methods with advanced spectroscopy and heartbeat detection technologies. These non-contact, non-mechanical detection methods enable early identification of non-viable eggs on Day 9-12 by detecting subtle physiological changes and spectral characteristics, achieving high detection accuracy without the limitations of conventional mechanical inspection methods

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent utilizes parameter changes in egg physiology during early incubation (Day 9-12) as detection markers. By monitoring changes in egg density, spectral characteristics, and heartbeat patterns during this specific window, the system can accurately distinguish between viable and non-viable eggs before pathogen contamination becomes problematic

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If advanced spectroscopy and heartbeat detection are used for early candling, then detection accuracy improves significantly, but device complexity increases

Engineering Contradiction:

Improveviability detection accuracyVSAvoidcandling system complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent employs a multi-functional candling system that integrates spectroscopy, heartbeat detection, and mechanical removal capabilities into a single platform. This universal system performs multiple functions (detection, classification, and removal preparation) simultaneously, reducing overall system complexity compared to having separate systems for each function while maintaining high detection accuracy

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Significantly reduces pathogen load and early mortality, achieving a greater than 1000-fold decrease in visible rots and early mortality from 6-8% to 1%, enhancing hatch percentage and viability.

Implementation Method 1

utilizing advanced candling technologies like spectroscopy and heartbeat detection

Methodology Applied

Scientific EffectSpectroscopy: Absorption Spectroscopy

Implementation Method 2

utilizing advanced candling technologies like spectroscopy and heartbeat detection

Methodology Applied

Scientific EffectHeartbeat detection:

Data Source

PatentEP4403914B1Method for reducing pathogens in poultry hatchery operations

Publication Date: 2025.10.15 ZOETIS SERVICES LLC

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AI summary

A pathogen reduction tool implementing a method of processing eggs at a poultry hatchery is provided. Such a method includes setting a production quantity of avian eggs in a setter incubator, the eggs being maintained in a plurality of egg flats. The avian eggs are removed from the setter incubator on a predetermined day of incubation, such predetermined day being during about day nine to day twelve of incubation. Subsequent to removal of the avian eggs from the setter incubator, the avian eggs are subjected to an egg detection system on the predetermined day to determine which of the avian eggs are viable and non-viable. The non-viable avian eggs are removed from the egg flats on the predetermined day. The viable avian eggs remaining in the egg flats post-inspection by the egg detection system are incubated through hatch.