Related Experiment Videos
Holoprosencephaly in Border Leicester lambs.
I J Roth1, C J Morrow, J F Wilkins
1New South Wales Department of Agriculture, Tamworth.
Australian Veterinary Journal
|September 1, 1987
Summary
Holoprosencephaly, a brain defect in Border Leicester lambs, is characterized by fused hemispheres and facial abnormalities. This condition is widespread and inherited in an autosomal recessive manner.
Area of Science:
- Veterinary Pathology
- Animal Genetics
- Developmental Biology
Background:
- Holoprosencephaly is a severe congenital brain malformation.
- This condition has been observed in Border Leicester lambs, presenting specific morphological characteristics.
Purpose of the Study:
- To describe the clinical and pathological features of holoprosencephaly in Border Leicester lambs.
- To investigate the inheritance pattern of this condition.
- To assess the prevalence of holoprosencephaly in the Border Leicester sheep population.
Main Methods:
- Detailed pathological examination of affected lambs.
- Conducting a controlled breeding experiment to analyze inheritance.
- Performing a survey to determine the condition's prevalence in Border Leicester sheep.
Main Results:
- Holoprosencephaly in these lambs involves the absence of the longitudinal cerebral fissure, fused cerebral hemispheres, and a single lateral ventricle.
- Associated facial defects were noted.
- Breeding experiments indicated an autosomal recessive inheritance pattern.
- A survey revealed the widespread occurrence of this defect in Border Leicester sheep.
Conclusions:
- Holoprosencephaly in Border Leicester lambs is a distinct congenital defect with associated facial anomalies.
- The condition is heritable via an autosomal recessive mode of inheritance.
- The widespread nature of holoprosencephaly in this breed necessitates further investigation and potential management strategies.