First report of the genus Retortamonas (Sarcomastigophora: Retortamonadidae) in birds

In studies carried out on the parasites infecting ostriches (Struthio camelus) in Spain, trophozoites of Retortamonas sp. have been found in the intestinal contents of 28 out of 146 slaughtered ostriches. The species infecting ostriches could not be determined from the morphological data available. However, these findings are important as they constitute the first report of the genus Retortamonas in birds

Monensin effect on rumen metabolic profile, methane production and protozoal population in buffalo-heifers

Thirteen propuberal buffalo-heifers aged 10-14 months were kept on the experimental farm on National Research Center, to investigate the effects of monensin on rumen metabolic profile, mithane production and protozoal population. The experimental animals were radomly allotted into two groups: control group of 5 heifers fed a pelleted concentrate and monensin group of 8 heifers which received the same concentrate after milling and mixing with 100 mg monensin head daily. Rumen samples were taken from buffalo-heifers of both groups 8 and 10 months after the beginning of treatment, before and 2 hours post-feeding. The rumen juice was subjected for determination of pH value, ammonia production, total and individual volatile fatty acids. Methane was also calculated and derect smears from the whole rumen contents were made for detection of protozoal density. pH values were not affected by neither feeding nor monensin and ammonia production was increased significantly by feeding, while monensin administration lowered the amonia production. The values of total volalille fotty avds [TVFAS] were elevated significantly by control feeding regime while monensin had no significant effects on the TVFAS concentrations. The production of acetic acid decreased in the rumen of monensin treated heifers. Monensin supplementation resulted in increasing the propionic acid production. The concentration of butyric acid was not affected by adding monensin. The molar prportions of acitic: propionic: butyric acids were 53.82: 26.34:19.75 under feeding of basal diet, and 41.82: 38.64: 19.53 on monensin administration. Monensin lowered the production of mentane in the rumen. Moreover, the density of protozoal population decreased in the rumen liquor of buffalo-heifers receiving monensin. In conclusion, monensin acts as a propionate enhancer and methane inhibitor. Thus, use of monensin as a feed additive may be profitable and incentive in buffalo production

Prevalência de endoparasitas em gatos na cidade de Säo Paulo / Prevalence of internal parasitisms in cats in city of Säo Paulo, Brazil

Foram realizado exames coproparasitológicos de 215 gatos, procedentes de diferentes áreas da cidade de Säo Paulo. Utilizaram-se os métodos de flutuaçäo em soluçäo saturada de sacarose e de centrifugaçäo em água-eter. As seguintes prevalência (%) foram observadas. Ascaridae, 22,3; Ancylostomidae, 19,5; Cestoda, 10,2; Coctera, Platynosomum), 5,6. Os parasitas mais frequentemente encontrados foram Ascaridae e Coccidia, ambos também predominaram nos animais de menso de 6 meses de idade. Ancylostomidae foram encontrados em gatos de menos de 6 e nos de 10 a 24 meses de idade. O encontro de D, caninum foi similar em todas as faixas etárias e os demais, esporadicamente. Infecçäo única foi detectada em 31,2% e a múltipla em 21,9%. Nesse caso, a associaçäo mais freqüentemente observada foi entre Ascaridae, Ancylostomidae e Coccidia. A Prevalencia entre as coccidias foi a seguinte: I. felis, 13,5%; I. rivolta, 8,8%; Sarcocystis spp., 9,3%; Cryptosporidium curye, 6,0%; H. hammondi, 0,9% Elmeria sp., 0,5%