Prenatal post-implantation development of collared peccaries (Pecari tajacu Linnaeus, 1758)
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View abstract on PubMed
Summary
This summary is machine-generated.This study details collared peccary embryonic and fetal development, establishing a prenatal growth curve. These findings aid in diagnosing developmental anomalies and advancing reproductive technologies for this species.
Area Of Science
- Veterinary Anatomy
- Developmental Biology
- Comparative Morphology
Background
- Understanding intrauterine development is crucial for diagnosing anomalies and advancing assisted reproduction technologies.
- Knowledge of newborn autonomy and responsiveness relies on accurate gestational development data.
- The collared peccary (Pecari tajacu) requires detailed morphological data for reproductive management.
Purpose Of The Study
- To describe the external morphology of collared peccary conceptuses throughout gestation.
- To establish a prenatal growth curve for collared peccary development.
- To provide comparative anatomical information for ungulates.
Main Methods
- Two conceptuses were analyzed per gestational age group (25–120 days post-copulation [dpc]) and neonates (145 dpc), totaling 22 animals.
- Embryos and fetuses were obtained from euthanized females.
- External morphology was examined, measured, and photographed.
Main Results
- Early gestation (25–50 dpc) showed body curvature, brain vesicles, somites, and limb buds.
- Mid-gestation (51–100 dpc) featured increased anatomical definition, skeletal development, and sensory organ formation.
- Late gestation (101–145 dpc) demonstrated complete organ formation, skin darkening, and externalization of sexual organs.
Conclusions
- The study successfully described collared peccary prenatal external morphology and created a growth curve.
- This data provides valuable comparative anatomy for ungulates.
- Findings contribute to rational reproductive management and biotechnologies for collared peccaries.
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