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Multiple congenital malformation in a Holstein calf
1College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, South Korea.
Journal of Comparative Pathology
|October 14, 2003
Summary
This case report details a rare congenital defect in a Holstein dairy calf, featuring partial rib agenesis and multiple other skeletal and organ abnormalities. The exact cause of these developmental anomalies remains undetermined.
Area of Science:
- Veterinary Pathology
- Congenital Abnormalities
- Bovine Medicine
Background:
- Congenital defects in dairy calves can lead to significant health issues and economic losses.
- Orthopaedic abnormalities are common but complex cases require detailed pathological investigation.
- Partial rib agenesis is an exceptionally rare finding in bovine neonates.
Purpose of the Study:
- To document and describe a unique case of partial rib agenesis in a Holstein dairy calf.
- To provide a comprehensive pathological description of associated congenital anomalies.
- To highlight the importance of thorough necropsy in identifying rare developmental defects.
Main Methods:
- Clinical examination of a 10-day-old calf presenting with inability to stand.
- Gross necropsy examination to identify all pathological findings.
- Detailed description of skeletal and organ system defects.
Main Results:
- The calf exhibited multiple congenital defects including partial agenesis of the left rib plate.
- Additional anomalies included a deformed left scapula, shortened left humerus, left kidney agenesis, atresia ani, and scoliosis.
- The etiology of the observed anomalies could not be ascertained.
Conclusions:
- This case represents the first documented instance of partial rib agenesis in a calf.
- The complex of multiple congenital anomalies underscores the challenges in diagnosing and managing severe developmental disorders in livestock.
- Further research into the genetic or environmental factors contributing to such rare defects is warranted.
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