Filiform papilla of holsteins tongue and its relation with the Rhipicephalus microplus tick resistance / Papila filiforme da língua de novilhas holandesas e sua relação com a resistência ao carrapato Rhipicephalus microplus
José Veríssimo, Cecília; Marques D'Agostino, Selma; Ferreira Pessoa, Fernanda; Lopes Dias da Costa, Ricardo; Macedo de Toledo, Luciandra.
B. Indústr. Anim.;
69: 27-27, 2012.
Artigo
em Português
| VETINDEX
| ID: vti-467156
Resumo
Several studies describe anatomical, morphological and histological analysis of domestic and wild animals tongue. The tongue is an extendable muscular organ that performs gripping, chewing, and swallowing food actions and executes tasting and mechanical body self-cleaning functions (grooming). The distribution of these tongue characteristics may vary, according to different species, but studies made with different animals classes reveal the filiform papilla acting in mechanical body cleaning function. In order to evaluate these mechanical functions, especially the self-cleaning one, we proposed to investigate filiform papillae length or its base dimensions would be related to the heifers resistance to Rhipicephalus microplus tick. Biopsies were performed in eight (8) Holstein heifers tongues, with a 6 mm diameter punch, in the anterior third of tongues, at the distance of 3 cm from its tip. The animals were anesthetized with xylazine hydrochloride 2%, a sedative, analgesic and muscle relaxant and received local anesthetic, hydrochloride 2.0 g lidocaine. After tissue removal, the local lesions received an ointment of triamcinolone acetonide, 1.0 mg g-1. The Holstein heifers were one year and half old and naturally infested with ticks in a paddock situated at Instituto de Zootecnia. We monitored their natural infestation by counting females ticks, greater than 4.5 mm, presentsO artigo não apresenta resumo em português.
Biblioteca responsável:
BR68.1
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