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. 1985 Aug;120(2):276–281.

Chondroclasts in fusarium-induced tibial dyschondroplasia. A histomorphometric study.

E M Lawler, T F Fletcher, M M Walser
PMCID: PMC1887826  PMID: 4025512

Abstract

The role of chondroclasts in the pathogenesis of Fusarium roseum-induced tibial dyschondroplasia (TD) was examined in a histomorphometric study. TD developed rapidly in broiler chickens placed at 1 day of age on rations containing either 3% (Experiment 1) or 2% (Experiment 2) F roseum cultures. In Experiment 1 the frequency of TD in birds killed at 4 weeks of age was 90%. In Experiment 2, birds were killed at intervals from 4 days until 4 weeks of age. By 1 week of age, 70% of birds examined had characteristic accumulations of prehypertrophic cartilage at the proximal tibial physis, and the frequency of TD in 4-week-old birds was 80%. Sections of hypertrophic cartilage from F roseum-fed and control birds from both experiments were examined for determination of the volume density of chondroclasts along the vascular channel boundary. Chondroclast density was consistently lower in F roseum-fed than in control birds, but the difference was significant only at 4 weeks of age. The fact that gross lesions were evident before a significant decrease in chondroclast density occurred indicates that a decrease in the density of chondroclasts was not an essential factor in the accumulation of cartilage characteristic of TD.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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