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      Óleo de Neem (Azadirachta indica) nos parâmetros parasitológicos, hematológicos e bioquímicos de ovinos naturalmente infectados por nematoides gastrintestinais Translated title: Neem oil ("Azadirachta indica") in parasitological, haematological abd biochemical parameters of sheep naturally infected by gastrintestinal nematodes

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          Abstract

          O experimento foi realizado com o objetivo de avaliar a administração do óleo de Neem na redução dos valores de ovos por gramas de fezes em ovinos naturalmente infectados por nematóides e protozoários gastrintestinais, verificar a dinâmica populacional dos endoparasitas através da coprocultura e avaliar os padrões hematológicos, bioquímicos, ganho de peso e escore corporal, em condições de manejo em pastagens. Foram utilizados 32 ovinos mestiços Santa Inês divididos em dois grupos (C - Controle e T - tratados com óleo de Neem), uniformes em peso vivo e de acordo com os resultados do volume globular e número de ovos por gramas de fezes, das análises realizadas previamente ao começo do experimento. Os animais T receberam 2,5 ml kg-1 de peso vivo do óleo de Neem por via oral com duas administrações em intervalos de 14 dias. No dia da aplicação e a cada sete dias após o tratamento foram feitos exames coprológicos. Pesagens, avaliação da condição corporal exames hematológicos e bioquímicos foram realizadas individualmente a cada quatorze dias. A utilização do óleo de Neem (Azadirachta indica), na quantidade administrada e nas condições deste experimento, não é eficaz no controle dos endoparasitas gastrintestinais, não provoca alterações nos padrões hematológicos e bioquímicos e nem compromete o ganho de peso e o escore corporal dos ovinos.

          Translated abstract

          The experiment was conducted to evaluate the administration of Neem oil in reducing the values of feccal eggs counts in sheep naturally infected with gastrointestinal nematodes and protozoa, check the population dynamics of endoparasites by coprocultures and to evaluate the hematological and biochemical, weight gain and body condition score in grazing management conditions. Thirty two crossbred Santa Inês sheep were divided into two groups (C - Control and T - treated with Neem oil), according their weight, hematocrit and the number of eggs per gram of feces. The animals received 2.5 ml T kg-1 bodyweight of Neem oil with two oral administrations every 14 days. On the day of application and seven days after treatment were made stool tests. The variables analyzed were weight, body condition, hematological and biochemical tests were performed individually every fourteen days. The use of Neem oil (Azadirachtaindica), and the amount administered in this experiment, is not effective in controlling gastrointestinal endoparasites, causes no changes in hematological and biochemical standards and not compromise weight gain and body condition score of sheep.

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          Most cited references 36

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          Resistance of Santa Ines, Suffolk and Ile de France sheep to naturally acquired gastrointestinal nematode infections.

          A study was conducted to assess the breed resistance against nematode infections in Santa Ines, Ile de France and Suffolk male lambs over a 9-month period in São Paulo state, Brazil. Lambs were born during the winter (year 2000) and were weaned at 2 months of age. The animals were then housed and treated with anthelmintics to eliminate natural infections by gastrointestinal nematodes. In late October 2000, lambs were placed in a paddock, where they stayed until August of the following year. Fecal and blood samples were taken from each animal every 2 weeks. On the same day, a pasture sample was collected to determine the number of infective larvae on the herbage. To prevent deaths, individual treatment with anthelmintics was provided to lambs with fecal egg counts (FEC) higher than 4000 eggs per gram (EPG) or with a packed cell volume (PCV) lower than 21%. In August 2001, all animals were slaughtered and the worms present in samples of the gastrointestinal contents were identified and counted. Most of the Suffolk and Ile de France sheep received three to six anthelmintic treatments over a period of 7 months, while most of the Santa Ines were not treated. Reductions in PCV and plasma protein values associated with high FEC and worm burdens were recorded, particularly, in Suffolk and Ile de France lambs. Haemonchus contortus and Oesophagostomum columbianum burdens and number of nodular lesions caused in the large intestine by O. columbianum larvae were significantly lower in Santa Ines sheep. All three breeds showed similar Trichostrongylus colubriformis worm burdens. The relative resistance of Santa Ines young male sheep was superior to that of Suffolk and Ile de France sheep.
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            Sistema IBGE de Recuperação Automática

            (2009)
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              Anthelmintic effect of Eucalyptus staigeriana essential oil against goat gastrointestinal nematodes.

              The aim of this study was to evaluate the anthelmintic efficacy of Eucalyptus staigeriana essential oil (EsEO). The in vitro effects of EsEO were determined through the egg hatching test and the inhibition of larval development of Haemonchus contortus. The oil was subjected to acute and subacute toxicity rodents. The in vivo effects were determined through fecal egg count reduction test in goats. 1.35 and 5.4 mgml(-1) EsEO inhibited 99.27 and 99.20% H. contortus egg hatching and larval development. In subacute toxicity of EsEO, all parameters were found to be in the normal range, and histopathological analysis of organs did not present alterations. EsEO efficacy against goat gastrointestinal nematodes was 76.57% at 15th day after treatment. E. staigeriana essential oil showed in vitro and in vivo anthelmintic activity.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbspa
                Revista Brasileira de Saúde e Produção Animal
                Rev. bras. saúde prod. anim.
                UFBA - Universidade Federal da Bahia (Salvador )
                1519-9940
                June 2015
                : 16
                : 2
                : 408-419
                Affiliations
                [1 ] Universidade Estadual Paulista Brazil
                [2 ] Faculdade de Ciências Agrárias de Andradina BR
                [3 ] Instituto de Zootecnia BR
                Article
                S1519-99402015000200015
                10.1590/S1519-99402015000200015
                Product
                Product Information: website
                Categories
                AGRONOMY

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