Investigating embryo deaths and hatching failure

Area of Science:

• Veterinary Science
• Animal Reproduction
• Developmental Biology

Background:

• Artificial incubation and hand-rearing are vital for optimizing productivity in avian and other species.
• Complex processes with numerous variables necessitate systematic evaluations to identify and mitigate mortality causes.
• Understanding embryo and neonatal mortalities is essential for improving success rates.

Purpose of the Study:

• To highlight the importance of investigating all embryo and neonatal mortalities in artificial incubation programs.
• To identify common sources of significant problems encountered during artificial incubation.
• To emphasize the need for comprehensive data collection and evaluation throughout the incubation process.

Main Methods:

• Systematic evaluation of every stage of artificial incubation, from egg lay to hatching.
• Analysis of comprehensive management data for the breeding population.
• Identification of common causes of mortality, including nutritional, environmental, and infectious factors.

Main Results:

• Common sources of significant problems include breeding population nutrition and management.
• Insufficient parental incubation prior to artificial incubation is a critical factor.
• Abnormal egg weight loss during incubation and infections (yolk sac, umbilicus) are frequent causes of mortality.

Conclusions:

• Thorough investigation of embryo and neonatal mortalities is essential for optimizing artificial incubation and hand-rearing programs.
• Addressing issues related to breeding stock, parental care, incubation conditions, and hygiene is key to reducing losses.
• Systematic evaluation and data analysis are crucial for identifying and resolving problems in artificial incubation.