scholarly journals On parasite fauna of the European beaver

2021 ◽  
Vol 15 (3) ◽  
pp. 11-16
Author(s):  
O. N. Andreyanov ◽  
A. N. Postevoy ◽  
A. V. Khrustalyov ◽  
E. A. Sidor ◽  
O. G. Timofeeva
Keyword(s):  
Infection Rate ◽  
Helminth Infection ◽  
Physiological State ◽  
Natural Habitat ◽  
Parasite Fauna ◽  
Internal Organs ◽  
Central Russia ◽  
Eurasian Beaver ◽  
Stichorchis Subtriquetrus ◽  
Specially Protected Areas

The purpose of the research is identification of the current parasitological situation for Eurasian beavers inhabiting the Central Russia.Materials and methods. The work was carried out on hunting farms and in specially protected areas of the Central Russia. Potentially infective material was collected, recorded and preserved from animals during 2015–2021. The age of the animals was determined by their weight and physiological state of the rodents’ teeth and internal organs, and the sex was determined by their genitals. The animals were examined according to the method of complete and partial helminthological dissection per Skryabin.Results and discussion. A total of 41 animals were examined. Three forms of parasitism on animals were identified in natural habitat, namely, the trematode Stichorchis subtriquetrus, the nematode Travassosius rufus, and the ectoparasite Platypsyllus castoris. The stichorchosis causative agent localized in the animal’s large intestine was diagnosed in 35 rodents (85.4%). The helminth infection was 96% in the Eurasian beaver and 68.7% in the Canadian beaver. The nematode infection in stomach was detected in 31 animals (75.6%). The infection by T. rufus was 88% in the Eurasian beaver, and 56.3% in the Canadian beaver. The infected animals were delivered from the Vladimir, Moscow, Ryazan, Tula and Yaroslavl Regions. The beaver beetle P. castoris was found in 6 animals (14.6%). The infection rate was 8% in the Eurasian beaver, and 25% in the Canadian beaver. Animals with wingless arthropods have been identified in the Moscow and Ryazan Regions.

scholarly journals Parasitic fauna of Eurasian beavers (Castor fiber) in Sweden (1997–1998)

2021 ◽  
Vol 63 (1) ◽  
Author(s):  
Per-Arne Åhlen ◽  
Göran Sjöberg ◽  
Margareta Stéen
Keyword(s):  
Age Groups ◽  
Ecological Factors ◽  
Parasite Fauna ◽  
Castor Fiber ◽  
Older Individuals ◽  
Parasitic Fauna ◽  
Eurasian Beaver ◽  
Norwegian Population ◽  
Stichorchis Subtriquetrus ◽  
One Year

Abstract Background The parasitic fauna of beavers (Castor fiber and C. canadensis) has been well studied in many parts of their respective areas of distribution. In Scandinavia there have, however, been limited investigations conducted on the parasites of beavers in recent times. The present study is the first quantitative survey of parasites on beavers living in Sweden and elsewhere in Scandinavia. We investigated the parasitic fauna of the Eurasian beaver (C. fiber) in a North–South gradient in Sweden. The aim of the study was to investigate parasite distribution and prevalence in particular, related to average yearly air temperature and different age groups of beavers. A total of 30 beavers were sampled at eight localities, spanning a 720 km North–South gradient during the springs of 1997 and 1998. Results Five parasite taxa were identified. Four of these were present in all of the examined beavers, Stichorchis subtriquetrus (trematode), Travassosius rufus (nematode), Platypsyllus castoris (coleopteran), and Schizocarpus spp. (arachnid). A higher number of new infections of S. subtriquetrus, and more adults of T. rufus, were seen in beavers in southern Sweden where temperatures are higher. One-year old beavers had a higher infestation of S. subtriquetrus, but not of T. rufus, than older individuals. Conclusions The parasite fauna of Swedish beavers mirrored the impoverished parasite fauna of the original Norwegian population, and the high prevalence of parasites could be due to low major histocompatibility complex (MHC) polymorphism. Young beavers had a higher load of trematodes, probably depending on behavioural and ecological factors. Warmer temperatures in southern localities likely contributed to increased endoparasite loads.

JUSTIFICATION OF VETERINARY AND SANITARY ASSESSMENT OF WILD AND DOMESTIC DUCKS AT SARCOCYSTOSIS

2019 ◽  
Vol 1 (1) ◽  
pp. 6-12
Author(s):  
I. G. Seregin ◽  
◽  
Yu. V. Petrova ◽  
S. V. Redkin ◽  
Yu. G. Isaev ◽  
...  
Keyword(s):  
The Other ◽  
Internal Organs ◽  
Domestic Ducks ◽  
Wild Duck ◽  
Central Russia ◽  
Physico Chemical ◽  
Muscle Lesions ◽  
Canning Industry ◽  
Microbiological Indicators

The article presents the results of studies of carcasses of domestic and wild ducks for the purpose of detection of sarcocystosis. The commodity, organoleptic, physico-chemical, microbiological indicators of the meat of sick and healthy domestic and wild ducks were determined. Researches were carried out in spring and autumn in the farms of six regions of Central Russia, on the territory of which there were large reservoirs (ponds, lakes or swamps). The intensity of the destruction of wild ducks by sarcocystosis was high, of domestic ducks was medium. Sarcocystis one wild duck found in large quantity in the chest muscles and lower in the muscles of the neck, the other two (domestic and wild) affected ducks Sarcocystis was discovered in many skeleton, which muscles. In chest muscles of one wild duck sarcocystis has revealed in large quantity and lower in the muscles of the neck, sarcocystis was discovered in many muscles of skeleton of the other two (domestic and wild) affected ducks. The size of the sarcocystosis was different, but no more than the millet grain. In our opinion, in cases of intense muscle lesions with sarcocistosis, carcasses and poultry organs should be sent for disposal or fed to animals after stripping and boiling for at least 1 hour. At weak injury and the absence of dystrophic processes in the muscles of the carcass, their internal organs are cleaned and sent to the canning industry. It is not allowed to feed infected sarcocistosis raw bird meat to dogs, cats and other carnivores.

INFLUENCE OF FODDER ADDITIVE ABIOTONIC ON VETERINARY AND SANITARY INDICATORS OF RABBIT MEAT

2019 ◽  
Vol 1 (4) ◽  
pp. 375-381
Author(s):  
F.I. Vasilevich ◽  
◽  
V.N. Shevkoplyas ◽  
V.M. Bachinskaya ◽  
◽  
...  
Keyword(s):  
Amino Acids ◽  
Physiological State ◽  
Essential Amino Acids ◽  
Feed Additive ◽  
Feed Supplement ◽  
Internal Organs ◽  
White Breed ◽  
Negative Effect ◽  
Rabbit Meat ◽  
White Fat

The materials on the study of the feed additive Abiotonic in rabbit breeding, as well as the results of organoleptic, microbiological, histological studies and the amino acid composition of rabbit meat of the New Zealand white breed are presented. According to the results of the studies, there was no negative effect of the feed additive on the veterinary and sanitary indicators of rabbit meat, the carcasses were well bled, drying crusts were formed in a timely manner, the muscles were elastic, light pink, white fat, the broth was clear and aromatic. No pathogenic and conditionally pathogenic microflora were found. At the same time, it was noted that the feed additive contributed to the increase in meat of non-essential amino acids by 6,01%, essential amino acids by 9,74%, which increases the biological value of the product. According to histomorphological studies, the Abiotonic feed supplement did not adversely affect the physiological state of animals, muscle tissue and internal organs developed within the physiological norm of rabbits.

scholarly journals Slaughter indicators of pigs when feeding cellulose-amylolytic additives

2019 ◽  
pp. 108-113
Author(s):  
V. Y. Novakovska
Keyword(s):  
Physiological State ◽  
Research Work ◽  
Internal Organs ◽  
Slaughter Weight ◽  
Fattening Pigs

The analysis of the research work on the study of slaughter indicators of fattening pigs when feeding cellulose-amylolytic additive in the composition of the diet is presented. The indicators of pre-slaughter weight, slaughter weight, slaughter output and weight of the internal organs are evaluated. It has been found that the use of cellulose-amylolytic additive in the amount of 19.2 g per day in the diet affects the physiological state of animals.

scholarly journals Acute Oral Toxicity of Vetom 21.77 Based on Duddingtonia Flagrans in Broiler Chickens

2019 ◽  
Vol 42 (1) ◽  
pp. 87-93
Author(s):  
Elmira R. Rafikova
Keyword(s):  
Broiler Chickens ◽  
Physiological State ◽  
Weight Coefficient ◽  
Control Group ◽  
Reference Ranges ◽  
Acute Oral Toxicity ◽  
Duddingtonia Flagrans ◽  
Oral Toxicity ◽  
Internal Organs ◽  
Different Doses

AbstractA 14-d study was undertaken to test the acute toxicity of a new preparation Vetom 21.77 based on the predacious fungus Duddingtonia flagrans. A total of 40 healthy 5-day-old broiler chickens (Hubbard F15, 100 ± 5 g), that had previously gone through a required 5-days adaptation to the environment, were orally dosed with the drug for 5 consecutive days at different doses, after which their health status was assessed daily up to the end of the experiment. According to the results, no substantial changes in the physiological state of the chickens were detected during the experiment. Internal organs weighing revealed no statistically significant differences between the groups, though weight coefficient values of internal organs of treated chickens slightly exceeded those of the control group. Some haematological parameters were significantly higher in the treatment group, without going beyond reference ranges. All chickens used in the experiment survived the study. The preparation has not produced any toxic effect even at a higher dose (4000 µL/kg bw/day). It is concluded that Vetom 21.77 pertains to preparations of IV toxicity class.

Materials on multicellular parasites fauna of the ruffe Gymnocephalus cernuus Linnaeus, 1758 (Pisces: Percidae) from the Saratov water basin

2016 ◽  
Vol 3 (1) ◽  
pp. 16-23 ◽  
Author(s):  
Минеева ◽  
O. Mineeva
Keyword(s):  
Natural Habitat ◽  
Parasite Fauna ◽  
Middle Part ◽  
Reservoir Host ◽  
The Body ◽  
Infection Rates ◽  
Saratov Reservoir ◽  
Gymnocephalus Cernuus ◽  
Larval Stages ◽  
Nicolla Skrjabini

Objective of research. Data on the species composition of the fauna of multicellular parasites and the infection rates of the pope ruffe Gymnocephalus cernuus Linnaeus, 1758 from Mordovian floodplain of the Saratov reservoir (the middle part) are pesented. Materials and methods. 53 ruffe individuals were investigated in spring and summer 2012 – 2015 by incomplete parasitological post-mortem examination (Bykhovskaya-Pavlovskaya, 1985). 19 species of multicellular parasites belonging to 7 classes: Monogenea - 1, Cestoda - 1, Trematoda - 11, Nematoda - 3, Acanthocephala - 1, Bivalvia - 1, Crustacea – 1 were registered. The largest group are flukes; more than half of species (8) are larval forms, which is the result of bottom living of the host. The significant diversity of larval stages of helminths (8 species of trematodes and 2 species of nematodes) shows the involvement of the ruffe as an intercalary, supplementary and/or reservoir host in the circulation of parasites in fish, birds and mammals. 7 species of parasites infest the ruffe on the food chain; 12 species – using the active infestation way. Results and discussion. The studied parasite fauna contains one species narrowly specific for the ruffe (monogenea D. amphibothrium (Wagener, 1857) and 2 species typical for percoid fishes (cestoda Proteocephalus percae (Müller, 1780) and trematoda Bunodera luciopercae (Müller, 1776). 2 alien species Nicolla skrjabini (Iwanitzky, 1928) (marita) and Apophallus muehlingi (Jägerskiöld, 1898) (mtc.) whose natural habitat is limited by the rivers of the Azov-Black Sea and Baltic Sea were registered in the fauna of multicellular parasites of the ruffe from the Saratov reservoir. The most common ruffe parasites are Diplostomum and Ichthyocotylurus metacercariae metacercaria infesting fish by penetrating through the body covers. These metacercariae as well as Apophallus muehlingi metacercariae are pathogenic to fish.

scholarly journals Endoparasite fauna of Brycon amazonicus and B. melanopterus(Characidae, Bryconinae) from Negro and Solimões rivers, Amazon, Brazil

2016 ◽  
Vol 46 (1) ◽  
pp. 107-110 ◽  
Author(s):  
Thamy Santos RIBEIRO ◽  
Bruno Hideo UEDA ◽  
Gilberto Cezar PAVANELLI ◽  
Ricardo Massato TAKEMOTO
Keyword(s):  
Parasite Species ◽  
Parasite Community ◽  
Parasite Fauna ◽  
Congeneric Species ◽  
Internal Organs ◽  
Host Environment ◽  
Composition And Structure ◽  
Solimões River

ABSTRACTCongeneric host species present similar biological and behavioral aspects, what may favor the presence of a similar parasite fauna. The aim of the present study was to compare the composition and structure of the parasite community from congeneric species, Brycon amazonicus and B. melanopterus, collected on the Negro and Solimões Rivers. The fish internal organs were longitudinally opened and analyzed under stereomicroscope. The examination revealed that B. amazonicuswas parasitized by Procamallanus(Spirocamallanus) inopinatus(26.7% and 35.5%), Contracaecum type 2 (10% and 16.13%) and Rhabdochona acuminata(0% and 3.23%), prevalence values for Negro and Solimões River, respectively. The analysis of B. melanopterus, a fish species found only in the Solimões River, revealed P.(S.) inopinatus(33.3%), Contracaecum type 1 (60%) and R. acuminata(3.34%). These results indicate that the taxonomic proximity of the hosts was a stronger influence on the parasite species than external host environment.

scholarly journals HELMINTHS OF DOMESTIC AND WILD GALLIFORMES IN UZBEKISTAN

2021 ◽  
pp. 44-50
Author(s):  
Akramova ◽  
Jangubaev ◽  
Arapbaev ◽  
Yorkulov ◽  
Rabbimov ◽  
...  
Keyword(s):  
Species Diversity ◽  
Infection Rate ◽  
Helminth Infection ◽  
Helminth Fauna ◽  
Widespread Species ◽  
Parasitic Worms ◽  
First Time

We found that parasitic worms were widespread in the study Galliformes of Uzbekistan. The total helminth infection rate in domestic and wild Galliformes was 50.5%. 43 species of helminths belonging to cestodes, trematodes and nematodes were identified in infected birds. For the first time for the helminth fauna of Uzbekistan, we recorded 3 species of trematodes (Brachylaima fuscatus, Collyriculum faba and Echinostoma miyagawai) and 10 species of nematodes (genera: Capillaria, Aonchotheca, Ascaridia, Heterakis, Dispharynx, Streptocara, Tetrameres, Diplotriaena and Splendidofilaria). In our collected materials, representatives of the Cestoda class were represented by 10 common and widespread species. The Trematoda class was represented by 11 species in the study territory. Two species Brachylaima fuscatus (Rudolphi, 1819) and Cоrrigia corrigia (Braun, 1901) were first recorded in the Himalayan snowcock; and Echinostoma miyagawai Ichii, 1932 in the partridge in the mountainous territories of Central Uzbekistan. The Nematoda class was characterized by the greatest species diversity in Galliformes of Uzbekistan – we recorded 22 species. Among them, Diplotriaena perdicis Sonin et Spassky, 1958; Splendidofilaria gvozdevi Sonin et Baruś, 1978; and Splendidofilaria papillocerca (Lubimov, 1946) were recorded by us for the first time for Galliformes.

Fat partitioning in British Friesian cows: the influence of physiological state on dissected body composition

1985 ◽  
Vol 104 (3) ◽  
pp. 519-528 ◽  
Author(s):  
B. W. Butler-Hogg ◽  
J. D. Wood ◽  
J. A. Bines
Keyword(s):  
Body Composition ◽  
Physiological State ◽  
Subcutaneous Fat ◽  
Body Parts ◽  
Energy Status ◽  
Weight Changes ◽  
Internal Organs ◽  
Fat Depots ◽  
Total Body ◽  
Friesian Cows

SummaryThe influence of physiological state (pregnant, lactating, dry) on body composition and fat partitioning in Friesian cows has been examined. A total of 20 cows, four per physiological state, were slaughtered and their left half carcasses dissected into individual muscles, bones and fat depots. All body parts, including the internal organs and fat depots, were weighed at slaughter.Muscle tissue and the internal organs showed some weight changes, consistent with a redistribution of tissue towards the udder and gut, and mobilization of muscle, but the major changes in weight associated with changing physiological state occurred in total body fat.Intermuscular fat made the greatest absolute contribution to changing fat weight, but subcutaneous fat showed the greatest proportional change with changing physiological state. The order of depletion of fat depots during fat loss was approximately the reverse of the order of development found during developmental growth.The distribution of subcutaneous fat between seven defined regions of the carcass was not affected by differences in total fatness in different physiological states. This, and the high correlation found between fat depth and total body fatness, confirms the view that measures of subcutaneous fat depth, e.g. by ultrasonics, should be useful predictors of the energy status of cows in varying physiological states.

scholarly journals TrypanosomaInfection Rates inGlossinaSpecies in Mtito Andei Division, Makueni County, Kenya

2015 ◽  
Vol 2015 ◽  
pp. 1-8
Author(s):  
Daniel Mutiso Nthiwa ◽  
David O. Odongo ◽  
Horace Ochanda ◽  
Samoel Khamadi ◽  
Bernard M. Gichimu
Keyword(s):  
Infection Rate ◽  
Gel Electrophoresis ◽  
Internal Transcribed Spacer ◽  
Tsetse Fly ◽  
Transmission Risk ◽  
Agarose Gel Electrophoresis ◽  
Infection Rates ◽  
Pcr Assay ◽  
Internal Organs ◽  
Animal Trypanosomiasis

African Animal Trypanosomiasis (AAT) transmitted cyclically by tsetse fly (Glossinaspp.) is a major obstacle to livestock production in the tropical parts of Africa. The objective of this study was to determine the infection rates of trypanosomes inGlossinaspecies in Mtito Andei Division, Makueni County, Kenya. Tsetse fly species,G. longipennisandG. pallidipes, were trapped and DNA was isolated from their dissected internal organs (proboscis, salivary glands, and midguts). The DNA was then subjected to a nested PCR assay using internal transcribed spacer primers and individual trypanosome species were identified following agarose gel electrophoresis. Out of the 117 flies trapped in the area 39 (33.3%) were teneral while 78 (67%) were nonteneral.G. pallidipesconstituted the largest percentage of 58% whileG. longipenniswere 42%. The overall trypanosomes infection rate in all nonteneralGlossinaspp. was 11.53% withG. longipennisrecording the highest infection rate of 23.08% whileG. pallidipeshad an infection rate of 5.77%.T. vivaxwas the most infectious (10.26%) compared toT. congolense(1.28%). Mean apparent densities were strongly positively correlated with infection rates (r=0.95) confirming the importance of this parameter as an indicator of AAT transmission risk.

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