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[Type and frequency of malformations in chick embryos]
Veterinarno-Meditsinski Nauki
|January 1, 1978
Summary
This study examined 7421 chick embryos, finding 6.28% had deformities, primarily affecting legs and feet. Most affected embryos had single defects, with incidence peaking between 15-21 days of incubation.
Area of Science:
- Veterinary Pathology
- Developmental Biology
- Poultry Science
Context:
- Industrial poultry farming practices can influence embryonic development.
- Histopathological examination of chick embryos is crucial for identifying developmental abnormalities.
- Understanding congenital defects in poultry is vital for flock health and productivity.
Purpose:
- To document the prevalence and types of congenital deformities in chick embryos from industrially raised flocks.
- To characterize the distribution of deformities across different body parts.
- To analyze the occurrence of single versus multiple defects and their severity.
Summary:
- Histopathological analysis of 7421 chick embryos revealed a 6.28% incidence of congenital deformities.
- Leg and foot malformations (e.g., micromelia, achondroplasia) were the most frequent, followed by head defects (acrania).
- Most affected embryos exhibited single defects (64.6%), with a smaller percentage showing multiple defects (29.9% with two, 5.2% with three or more).
- Deformities were observed in embryos aged 15-21 days of incubation.
Impact:
- Provides baseline data on congenital defect prevalence in industrial poultry production.
- Highlights specific malformations that may require further investigation in breeding programs.
- Informs strategies for improving incubation conditions and genetic selection to reduce embryonic abnormalities.