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- W577389929 abstract "Brazilian sheep production is gradually increasing, with incentives from governmental and private initiatives, whose investments formalize top agribusiness, with new techniques, better prices on the market, integrating unification of producers and cooperatives for larger production scales. One of the major problems sheep breeding faces are nematode infections that, similar to what happens in cattle breeding, are responsible for severe production loss, being the main obstacle for development, as well as high expenses for acquisition of antiparasitic products. Knowledge of helminthic species with higher incidence in a determinate region helps handling and control practices, minimizing economic losses. The present study investigated prevalence, by means of quantification, and identified the main species of helminthes parasitizing sheep from micro regions near the city of Jaboticabal, state of Sao Paulo, Southeast region of Brazil. To achieve this, 66 naturally infected animals were selected, both males and females with ages ranging between four and 36 months, created in extensive regimens and presenting counts of eggs per gram of feces (EPG) superior to 800. All animals were necropsied and parasites were collected, being quantified and identified with the aid of optical microscopy. Results revealed presence of seven genres and 12 species, with the following prevalence and parasitic averages: Haemonchus contortus: 100.00% (2,947.20); Trichostrongylus colubriformis: 90.90% (3,048.82); Cooperia curticei: 56.06% (256.52); Oesophagostomum columbianum: 48.48% (36.00); Cooperia punctata: 30.30% (94.53); Trichostrongylus axei: 22.72% (26.56); Strongyloides papillosus: 19.69% (83.09); Haemonchus contortus immature forms (L4): 7.58% (17.29); Cooperia pectinata: 10.60% (12.97); Trichuris ovis: 10.60% (0.67); Cooperia spatulata 4.54% (0.35); Capillaria bovis: 4.54% (0.09). Average parasite burden was 6,524.77 helminthes per animal. Haemonchus contortus (adults and L4) and Trichostrongylus colubriformis corresponded to 45.43% and 46.73% of the total average burden, respectively. Base on obtained results, it was possible to conclude that the two most prevalent species in the region of Jaboticabal were Trichostrongylus colubriformis and Haemonchus contortus, representing 92.16% of percentual distribution. Such results demonstrate the importance of monitoring EPG counts of sheep herds, especially because the FAMACHA method is not indicated for controlling Trichostrongylus spp." @default.
- W577389929 created "2016-06-24" @default.
- W577389929 creator A5018748832 @default.
- W577389929 date "2014-07-25" @default.
- W577389929 modified "2023-09-23" @default.
- W577389929 title "PREVALÊNCIA DE NEMATÓDEOS EM OVINOS (Ovis aries) PERTENCENTES A DIFERENTES MICRORREGIÕES DO ESTADO DE SÃO PAULO, BRASIL" @default.
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