Periódicos Brasileiros em Medicina Veterinária e Zootecnia

p. 01-05

Antibacterial activity of essential oil of cinnamon and trans-cinnamaldehyde against Staphylococcus spp. isolated from clinical mastitis of cattle and goats

Dal Pozzo, MarceloSilva Loreto, ÉricoFlores Santurio, DeiseHartz Alves, SydneyRossatto, LuanaCastagna Vargas, AguedaViegas, JulioMatiuzzi da Costa, Mateus

Background: Milk production plays a role as a source of protein and constitutes an important socioeconomic factor for small farms. The lack of planning of the creators, together with the lack of specialized technical assistance, and the precarious hygienic and sanitary management, are barriers that hinder the development of the activity. Bovine and caprine mastitis is an infl ammation process of the mammary gland caused by microorganisms. Staphylococcus spp. is the main causative agent of mastitis, with higher prevalence in cases of clinical and subclinical manifestations. The most common treatment is based on intramammary infusion of antibacterial agents. However, cure rates obtained with such drugs are not always effectives, because it may determine the emergence of resistant bacteria as well increase amounts of antibiotic residues in milk. Nevertheless, the treatment of bovine subclinical mastitis caused by Staphylococcus spp. in the lactation can be economically unviable. Alternative treatments of bovine mastitis with plant derived compounds have been described. The investigation of its antimicrobial activity against bacterial agents of mastitis is justifi able.Materials, Methods & Results: This study evaluated the antimicrobial activity of essential oil (EO) of Cinnamomum zeylanicum (cinnamon) and the fraction trans-cinnamaldehyde (TC) against 65 isolates of Staphyloco

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