Morphology of lymphoid nodules and aggregates in the lungs of calves at different ages

Zuki A. B. Z., . and Saw Po Po, . and M. Zamri Saad, . Morphology of lymphoid nodules and aggregates in the lungs of calves at different ages. pp. 9-15. ISSN 9128-2506

The present study was conducted with the aim of defining the morphology of lymphoid nodules and lymphoid aggregates in calves at different ages. A total of 9 calves divided into 3 age groups (3- 6- and 8-month-old) consisting of 3 calves in each group was used in this study. Samples of the lungs were taken systematically and processed for histological examinations. The tissues were sectioned at 4m stained with Haematoxylin and Eosin and examined under light microscope. The occurrence and structure of lymphoid nodules and lymphoid aggregates varied between the age groups. The number of lymphoid nodules and lynphoid aggregates in the lung of calves increased with age. The number of lymphoid nodules and lymphoid aggregates in the 8-month-old calves was significantly higher (P0.05) than in the 3-and 6-month-old calves. Similarly the size of lympoid nodules and lympoid aggregates increased with age and was significantly higher (P0.05) in the 8 month-old calves as compared to the 3- and 6- month-old calves. The number of intraepithelial lymphocytes (IELs) within the lymphoid nodules and lymphoid aggregates was significantly higher (P0.05) in the 8-month-old calves compared to the 3-and 6-month-old calves.

Full text available from: Official URL: https://www.mavma.org.my/2009-volume-21-issue-no-2...

Abstract

The present study was conducted with the aim of defining the morphology of lymphoid nodules and lymphoid aggregates in calves at different ages. A total of 9 calves divided into 3 age groups (3- 6- and 8-month-old) consisting of 3 calves in each group was used in this study. Samples of the lungs were taken systematically and processed for histological examinations. The tissues were sectioned at 4m stained with Haematoxylin and Eosin and examined under light microscope. The occurrence and structure of lymphoid nodules and lymphoid aggregates varied between the age groups. The number of lymphoid nodules and lynphoid aggregates in the lung of calves increased with age. The number of lymphoid nodules and lymphoid aggregates in the 8-month-old calves was significantly higher (P0.05) than in the 3-and 6-month-old calves. Similarly the size of lympoid nodules and lympoid aggregates increased with age and was significantly higher (P0.05) in the 8 month-old calves as compared to the 3- and 6- month-old calves. The number of intraepithelial lymphocytes (IELs) within the lymphoid nodules and lymphoid aggregates was significantly higher (P0.05) in the 8-month-old calves compared to the 3-and 6-month-old calves.

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Item Type:	Article
AGROVOC Term:	Calves
AGROVOC Term:	Animal morphology
AGROVOC Term:	Animal histology
AGROVOC Term:	Lungs
AGROVOC Term:	Age
AGROVOC Term:	Lymphatic system
AGROVOC Term:	Size
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/8425

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