19
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Gastrointestinal parasites of sheep, municipality of Lajes, Rio Grande do Norte, Brazil Translated title: Parasitos do trato gastrintestinal de ovinos, município de Lajes, Rio Grande do Norte, Brasil

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          This study investigated the gastrointestinal parasitism by helminths and protozoa in sheep (Ovis aries) Santa Inês breed, municipality of Lajes, Rio Grande do Norte. Monthly, from April 2005 to August 2007, stool samples were collected from two tracer lambs in the first day of the experiment and performed a necropsy of these animals in 44th day. A total of 64 lambs were sampled, but only 62 lambs were slaughtered. The fecal samples were examined by sedimentation in water. The contents of the abomasum, small intestine and large intestine were examined for the recovery of helminths. The parasitological examination revealed eggs of the following groups of helminths: Strongyloidea, Strongyloides sp., Trichuris sp., and Moniezia sp. Also were found oocysts of Eimeria spp., cysts of Entamoeba ovis and Giardia duodenalis. The helminths identified from examining the contents were: Haemonchus contortus, Cooperia pectinata, Cooperia punctata, Trichostrongylus colubriformis, Moniezia expansa, Oesophagostomum sp. Skrjabinema ovis and Trichuris sp.

          Translated abstract

          O presente estudo investigou o parasitismo gastrintestinal por helmintos e protozoários em ovinos (Ovis aries) da raça Santa Inês, no município de Lajes, Rio Grande do Norte. Mensalmente, entre abril de 2005 e agosto de 2007, foram coletadas amostras fecais de dois cordeiros traçadores no primeiro dia do experimento e realizada a necropsia desses animais no 44º dia. O total de cordeiros amostrados foi 64, mas apenas 62 foram necropsiados. As amostras fecais foram examinadas pela técnica de sedimentação espontânea em água. Os conteúdos do abomaso, intestino delgado e intestino grosso dos cordeiros necropsiados foram examinados para a recuperação dos helmintos. Os exames parasitológicos evidenciaram ovos dos seguintes grupos de helmintos: Strongyloidea, Strongyloides sp. , Trichuris sp., e Moniezia sp. Também foram encontrados oocistos de Eimeria spp., cistos de Entamoeba ovis e de Giardia duodenalis. Os helmintos identificados a partir do exame dos conteúdos foram: Haemonchus contortus, Cooperia pectinata, Cooperia punctata, Trichostrongylus colubriformis, Moniezia expansa, Oesophagostomum sp. , Skrjabinema ovis . Trichuris sp.

          Related collections

          Most cited references14

          • Record: found
          • Abstract: found
          • Article: not found

          Pathophysiology of infection with gastrointestinal nematodes in domestic ruminants: recent developments.

          M.T. FOX (1997)
          Infection with gastrointestinal nematodes, particularly Ostertagia species in domestic ruminants, continues to represent an important cause of impaired productivity in temperate parts of the world. The mechanisms responsible for such losses include changes in feed intake, gastrointestinal function, protein, energy and mineral metabolism, and body composition, and were described in detail at the last Ostertagia Workshop (Fox, M.T. 1993. Pathophysiology of infection with Ostertagia ostertagi in cattle. Vet. Parasitol. 46, 143-158). Since then, research into the pathophysiology of infection has focused on three main areas: mechanisms of appetite depression; changes in gastrointestinal function; and alterations in protein metabolism. Studies on the mechanisms responsible for appetite depression in Ostertagia-infected cattle have continued to support a close association between impaired feed intake and elevated blood gastrin concentrations. Alternative explanations will have to be sought, however, to account for the drop in feed intake associated with intestinal parasitism in which blood gastrin levels normally remain unaltered. Such work in sheep, and more recently in laboratory animals, has shown that central satiety signals are associated with inappetance accompanying intestinal infections, rather than changes in peripheral peptide levels. Changes in gastrointestinal function have also attracted attention, particularly the mechanisms responsible for increases in certain gut secretions, notably pepsinogen and gastrin. Elegant experimental studies have established that the gradient in pepsinogen concentration between abomasal mucosa and local capillaries could alone account for the increase in blood concentrations seen in Type 1 ostertagiosis. Additional factors, such as increases in capillary permeability and in surface area, probably contribute to such responses in cases of Type 2 disease. The increase in blood gastrin concentrations that accompanies Ostertagia infections in cattle is associated with the concurrent rise in abomasal pH. However, in sheep, additional factors appear to contribute to the hypergastrinaemia which may occur independent of parasite-induced changes in gastric pH. Alterations in protein metabolism have been well documented in ruminants harbouring monospecific infections with either abomasal or intestinal nematodes. More recently, however, the effects of dual abomasal and intestinal infections have been investigated and demonstrated that the host is able to compensate for impaired abomasal digestion provided that the intestinal parasite burden does not occupy the main site of digestion and absorption in the latter organ. An alternative method of improving the host's protein balance, dietary supplementation, has been shown not only to improve productivity, but also to enhance the innate resistance of susceptible breeds of sheep to Haemonchus and to accelerate the development of immunity to Ostertagia in lambs.
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Seasonal prevalence of gastrointestinal nematodes of goats in Pernambuco State, Brazil.

            During each of 36 1-month periods from April 1979 to March 1982, 3-4 goats selected from typical farms were necropsied and examined for gastrointestinal nematodes. The goats were male, 12 months old, born on the farm and raised without any anthelmintic application. At the beginning of each month, from April 1981 to March 1982, three 12-month-old male goats shown to be free of gastrointestinal nematodes after anthelmintic treatment were grazed with a flock of naturally infected goats (tracer goats). At the end of each month, these goats were placed on a cement-floored pen and were maintained there for 4 weeks prior to necropsy and examination for gastrointestinal nematodes. Every goat examined was found to be parasitized by more than one species of nematode. Haemonchus contortus, Strongyloides papillosus and Oesophagostomum columbianum were the most prevalent nematodes found. Total worm burdens present in the farm animals were highest during late rainy/early dry season (March-June) and lowest in mid-rainy season (January-February). The acquisition of nematodes by tracer goats occurred mainly from mid-rainy to early dry season (January-June).
              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              The economic impact of coccidiosis in domestic animals.

                Bookmark

                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbpv
                Revista Brasileira de Parasitologia Veterinária
                Rev. Bras. Parasitol. Vet.
                Colégio Brasileiro de Parasitologia Veterinária (Jaboticabal )
                1984-2961
                March 2012
                : 21
                : 1
                : 71-73
                Affiliations
                [1 ] Universidade Federal do Rio Grande do Norte Brazil
                [2 ] Universidade Federal de Minas Gerais Brazil
                Article
                S1984-29612012000100015
                10.1590/S1984-29612012000100015
                22534950
                086fbf72-e595-4bba-9ef8-6a26c432f2c1

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1984-2961&lng=en
                Categories
                PARASITOLOGY
                VETERINARY SCIENCES

                Parasitology,General veterinary medicine
                Sheep production,Haemonchus contortus,Trichostrongylus spp.,Giardia duodenalis,tracer lambs,Ovinocultura,ovinos traçadores

                Comments

                Comment on this article