Učinak pokusne infekcije protozoonom Trypanosoma vivax na štitnjaču u zebu bikova

Autor: Muhammad Yakasai Fatihu, Sani Adamu, Najume Doguwar Giginya Ibrahim, Lawrence Oghenemin Eduvie, King Akpofure Nelson Esievo
Jazyk: angličtina
Rok vydání: 2009
Předmět:
Zdroj: Veterinarski arhiv
Volume 79
Issue 5
ISSN: 1331-8055
0372-5480
Popis: Thyroid gland dysfunction was studied in Zebu cattle experimentally infected with Trypanosoma vivax, based on the levels of serum thyroxine (T4) and occurrence of pathological lesions at 13 weeks post infection (p.i.). There were statistically significant declines in the T4 levels in the infected group at 3 weeks p.i. (P0.05) between the groups. Histopathological lesions observed in the thyroid glands of the infected bulls were focal in occurrence and include; squamous metaplasia of follicular epithelium with fibroplasia and widened interfollicular connective tissue. The control bulls showed no histopathological lesions in the thyroid glands. It was concluded that thyroid gland dysfunction occurs in trypanosomosis due to T. vivax in cattle and it is suggested that this could contribute to the weakness associated with trypanosomosis.
Istraživana je disfunkcija štitnjače u zebu goveda pokusno invadiranih protozoonom Trypanosoma vivax na osnovi određivanja razina serumskoga tiroksina (T4) i pojave patoloških promjena 13 tjedana nakon invazije. Razine T4 bile su statistički značajno manje u invadiranoj skupini životinja tri tjedna nakon invazije (P0,05) među skupinama. U štitnjačama pokusno invadiranih bikova ustanovljene su žarišne patohistološke promjene uključujući skvamoznu metaplaziju folikularnoga epitela s fibroplazijom i proširenim interfolikularnim vezivnim tkivom. Kontrolni bikovi nisu pokazivali patohistološke promjene u štitnjačama. Zaključeno je da se poremećaj štitaste žlijezde javlja kod tripanosomoze uzrokovane nametnikom T. vivax u goveda što doprinosi općoj slabosti invadiranih životinja.
Databáze: OpenAIRE
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