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В 1978—1985 гг. исследовалось заражение улиток Planorbarius corneus личиночными cтадиями Parafasciolopsis fasciolaemorpha и его динамику в очаге парафасциолёпсоза на территории натурального местообитания лосей в лесничестве Гженды (Ломжиньскoе воеводство). Общий процент улиток, высевающих перкарии, составлял 12,4 и колебался в зависимести от времени года и места от 0 до 85. Наивысший процент улиток, высевающих церкарии, отметился в июне, а возможность заражения последнего хозяина существует весь год, когда водоемы не покрыты льдом. В 1984 и 1985 гг. отмечено секционным исследованием, что действительный процент зараженных улиток составлял 17,53, н процент высевающих улиток только 10,52, значит, был значительно выше, на что влияет длинный период развития личиночных стадий в последнем хозяине. Р. fasciolaemorpha как паразит, тесно приспособленный к болотной среде, не будет иметь большего болезнетворного значения для скота и овец, которых человек сознательно от такой среды изолирует, могут зато удершиваться малые очаги парафасциолёпсоза домашных животных, когда зараженный лось войдет на их пастбище, на котором обитает последний хозяин Р. corneus.
Инфицировалось хкcпериментально 15 овец дoзами 5, 10 либо 50 тыс. метацеркарий Р. fasciolaemorpha. Овец наблюдалось, а затем ислледовалось секционно между 8 и 35 неделями после заражения. Препатентный период составлял 27—38 дней. У части зараженных животных отмечались отсутствие аппетита, болезненность брюшной полости, нарушения моторики рубца и незначительное ускорение дыхания. 4 зараженных животных пало между 8 и 24 неделями после заражения. Секционно отмечались у них в печени изменения, зависящие от интенсивности и продолжительности инвазии. Изменения касались желчных протоков, которые расширялись, стенки их были утолщены, эпителий разрыхлен и покрыт буро-розовым экссудатом. Внутри находились живые паразиты. Соседняя железистая ткань печени подвергалась циррозным изменениям главным образом левой доли. С ростом интенсивности инвазии росло отчетливо число двуусток в двенадцатиперсной кишке. Ее слизистая оболочка была разрыхлена и складчата. Двуустки находились также в поджелудочной железе. Отмечено значительную патогенность Р. fasciolaemorpha для овец и возможность секционного распознания этой инвазии.
Blood plasma from 140 specimens of cattle from different regions of Poland have been directly examined after rotation in hematocrit microtubes acc. to the method by Kingston and Morton (11). Trypanosoma theileri Laveran, 1902 were found in blood of 20% of cattle from the forest-villages in Białowieża Forest (Białystok district) and in 6.8% of cattle in Zamość district. There were not found the evidence of protozoans of this species in blood samples of cattle from Warszawa, Włocławek and Przemyśl districts.
The examinations were carried out on the presence of onchocercosis in villiges of the Puszcza Białowieska, Puszcza Kampinoska, Bory Dolnośląskie and in the Słupsk, Skierniewice, Włocławek, Zamość and Przemyśl provinces. The samples of the skin from the ear and umbilical regions were taken from 297 cattle killed in slaughter-houses. The skin samples were cut in 1—2 mm pieces, incubated in a physiological solutionat 25°C for 24 hours and then examined for the presence of microfilariae. Microfilariae of Onchocerca lienalis and Onchocerca gutturosa were found in animals from the Puszcza Białowieska, Puszcza Kampinoska, Bory Dolnośląskie and the Przemyśl district. Extensiveness of cattle invasion by nematode O. lienalis was from 6% to 80%, and by O. gutturosa from 3% to 30%. Nematodes of Onchocerca spp were not found in the Słupsk, Skierniewice, Włocławek and Zamość districts. Focal occurrence of onchocercosis was associated with cattle pasturage near the forest biotope with streams where there could hatch intermediate hosts of Onchocerca-blood sucking insects.
In december 1989 samples of feaces from 57 roe deers and 10 red deers were collected in Borecka Forest. The samples of feaces were examinated by flotation in saturated solution of NaCI. Oocysts from genus Eimeria were found in 33,3% of examinated roe deers and 30°/o of red deers. There were found as many as 6 species of coccidia, from them, 4 species in roe deers: E. capreoli, E. panda, E. rotunda and E. ponderosa, and 2 species in red deers: E. sordida and E. elaphi. Finding of oocysts of mentioned coccidia in feaces of roe and red deers in Borecka Forest is the first registration of these species in teritory of Poland.
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Odrobaczanie danieli Fenbesanem w hodowli fermowej

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Post mortem examination of 8 fallow deer before and 7 after deworming with Fenbesan in dose 7.5 mg/kg body weight during three following days administrated per os, showed unaequal sensibility of different species of gastrointestinal nematodes on this medicament. Especialy resistant to this drug were nematodes Ostertagia drozdzi and O. leptospicularis, and their percentage index of invasion intensity increased considerably after deworming. It can be a beginning of drug resistance. It is necessary to use different drugs to avoid it.
Rintal 2.4% premix (Bayer) in single dose 7.5 mg of active substance on kg body weight was given to the calves of red and fallow deer. Effectiveness of deworming against nematodes from family Trichostrongylidae was 85.2% in red and 97.8% in fallow deer. Against namatodes from genus Trichocephalus the effectiveness was higher extending in red deer 98.1%, and in fallow deer 99.5%. Anthelmintic was not effective against nematodes Varestrongylus sagittatus and Elaphostrongylus cervi.
Two females of beaver from north-east Poland were necropsied. Moreover, 15 samples of feaces were examinated. Both necropsied beavers were infected with 46 and 362 specimens of trematode Stichorchis subtriquetrus (RUDOLPHI 1814). In stomach of one beaver were found 2800 specimens of nematode Travassosius rufus Khalil, 1922. It was the first registration of this species in Poland. Coproscopical examination showed eggs of S. subtriquetrus in all 15 fecal samples and eggs T. rufus in 5 samples.
Angiostrongylus vasorum belongs to the superfamily of Metastrongyloidea. This nematode occurs in foxes, dogs and other predators. The Nematode A. vasorum place themselves in the pulmonary artery and its branches, and in the right ventricle and atrium of the heart. Numerous species of land snails are the intermediate hosts of the parasite. In 2013, lungs and hearts of 76 foxes shot in the Forest District Głęboki Bród in Augustowska Primeval Forest were parasitologically necropsied. Four of the examined foxes were infected with the nematode A. vasorum, a prevalence of 5.2%. In one fox pericardium there were 6 male and 6 female nematodes. In the remaining three foxes nematodes were localized in the pulmonary artery. In two foxes 2 specimens of nematodes were detected (male and female, and two females) while 1 female was detected in the other fox. This is the first report of the presence of the nematode A.vasorum in fox in Poland.
To examine the susceptibility of pigs for elaphostrongylosis, six 3.5-month-old Vietnam pigs were infected with doses of from 500 to 10000 invasive larvae of E. cervi. In all infected pigs any clinical symptoms of infection were observed. After one month post infection a necropsy of the pig infected with 5000 larvae was conducted. On the surface of the liver itself were found 6 white nodules from 2 to 6 mm in diameter. Third stage larvae of E. cervi were found in enlarged mesenteric lymph nodes. Most of them were dead, but after isolation some were still alive. The rest of the pigs infected with doses of 3000, 2000, 1000, 500 and 10000 larvae, were necropsied successively after 2, 3, 4, 5 and 6 months post infection. Any pathological changes were observed in their organs. In the pig necropsied 2 months post infection, dead E. cervi larvae or their fragments were found in mesenteric lymph nodes, and in the rest of the pigs, in this same localization, only fragments of dead larvae or detritus after their resorption were found. Histopathological examinations confirmed the presence of parasitic nodules in lymph nodes and in livers in which cross-sections of larvae of this parasite have been seen. Results of the presented investigations indicate that pigs are not susceptible to infection of E. cervi larvae. One can suppose that a similar low susceptibility to the discussed parasitosis occur in other omnivorous animals and also in men.
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