Despite the overall progress of sheep farming in Brazil, infections with gastrointestinal parasite Haemonchus contortus represent one most important problems production, aggravated by increasing resistance nematodes to traditional anthelmintic drugs caused inadequate flock management breeders. Ethnopharmacological data indicate Annona muricata as a promising alternative for control because its general properties. The aim this work was evaluate vitro effects A. aqueous leaf extract against...

Realizou-se um estudo sobre a ação biocida de Eucalyptus citriodora, globulus e staigeriana no carrapato Boophilus microplus, buscando-se produção acaricidas menos agressivos ao meio ambiente.Os óleos essenciais das três espécies os concentrados emulsionáveis E. foram testados em cinco concentrações diferentes contra larvas fêmeas ingurgitadas B. microplus.Os submetidos à análise por cromatografia gasosa acoplada espectrometria massas (CG/EM), fim se investigar sua composição.O citronelal é...

The indiscriminate use of anthelmintics has resulted in the establishment parasite resistance. Thus, this study aimed to evaluate vitro antiparasitic effect plant extracts on Haemonchus contortus sheep and vivo Strongyloides venezuelensis Rattus norvegicus. from Piper tuberculatum, Lippia sidoides, Mentha piperita, Hura crepitans Carapa guianensis, produced at different research institutions, were chemically analyzed evaluated through egg hatch test (EHT) larval development (LDT) H....

Anthelmintic resistance is a worldwide concern in small ruminant industry and new plant-derived compounds are being studied for their potential use against gastrointestinal nematodes. Mentha piperita, Cymbopogon martinii schoenanthus essential oils were evaluated developmental stages of trichostrongylids from sheep naturally infected (95% Haemonchus contortus 5% Trichostrogylus spp.) through the egg hatch assay (EHA), larval development (LDA), feeding inhibition (LFIA), exsheathment (LEA)....

The most challenging obstacles to testing products for their anthelmintic activity are: (1) establishing a suitable nematode in vitro assay that can evaluate potential product use against parasitic of interest and (2) preparation extracts be redissolved solvents are miscible the test medium at concentrations well tolerated by system used screening. nematodes as screening is hindered difficulty keeping them alive long periods outside host need keep infected animals sources eggs or adults when...

Haemonchus contortus and Trichostrongylus colubriformis are the most important gastrointestinal nematodes causing serious losses in sheep production of tropical subtropical regions. Prophylaxis nematode infections is based on anthelmintics use, but their frequent administration selects multiple-resistant parasites. To evaluate how situation has changed over last decades, anthelmintic resistance status flocks was assessed current study compared to previous surveys. In each one 15 evaluated,...

Abstract Background The integration of molecular data from hosts, parasites, and microbiota can enhance our understanding the complex biological interactions underlying resistance hosts to parasites. Haemonchus contortus , predominant sheep gastrointestinal parasite species in tropics, causes significant production economic losses, which are further compounded by diminishing efficiency chemical control owing anthelmintic resistance. Knowledge how host responds infection parasite, combination...

This study evaluated the resistance of cattle different genetic groups to tick Rhipicephalus microplus and relationship with traits animals' hair coat. Cows Senepol×Nelore (SN), Angus×Nelore (AN) Nelore (NX) were submitted four consecutive artificial infestations, at 14-day intervals, each one approximately 20,000 larvae placed on lumbar region. From 19th 23rd day infestation five counts number ticks performed animal's left body side. The count data (TTC) transformed into log(10) (n+1), also...

A criação de ovinos e caprinos depende um manejo eficiente, devido, principalmente, ao prejuízo causado por parasitos em animais susceptíveis. Vários fatores colaboram para que os tolerem as infecções parasitárias, como: genética, nutrição, estado fisiológico idade. O grave problema pela resistência anti-helmíntica promoveu a difusão técnicas alternativas controle parasitário. Dentre essas novas estratégias incluem-se adoção do tratamento parcial seletivo com o método FAMACHA, fitoterapia,...

Abstract This study evaluated the economic impact of gastrointestinal nematode (GIN) infection in Morada Nova lambs under different parasite chemical control conditions. For this, 246 lambs, rainy and dry season, were randomized into groups according to their anthelmintic treatment with levamisole: (CT: no treatment); routine (RT: treated every 42 days); targeted selective (TST: average daily weight gain, DWG). From 63 days age (D63) D210, weighed monitored for GIN parameters. Spending on...

Ixodes scapularis ticks are vectors of infectious agents that cause illness in humans, including Lyme disease. Recent years have seen a surge tick-borne diseases (TBD) resulting high demand for tick management products. Plants offer valuable source active compounds the development novel, eco-friendly control products, reducing potential risks to human and animal health. Essential oils (EOs) emerged as acaricides repellents against providing an alternative synthetic chemicals aiding...

Little is known about the genetic diversity and stability of natural populations over millennial time scales, although current biodiversity crisis calls for heightened understanding. Marine phytoplankton, primary producers forming basis food webs in oceans, play a pivotal role maintaining marine ecosystems health serve as indicators environmental change. This study examines shifts allelic composition diatom species Skeletonema marinoi ~ 8000 years Baltic Sea by analyzing chloroplast...

Abstract Rhipicephalus microplus is an ectoparasite responsible for causing economic losses in livestock farming totalling approximately $3.24 billion dollars per year. The main control method involves the use of chemical acaricides. However, incorrect and intensive these chemicals has led to increasing number reports resistance Therefore, objective this study was develop evaluate a laser prototype with voltage 5 V power 1000 mW reduce development R. microplus. methodology evaluated did not...

The control of parasitic diseases in small ruminants is mainly done with the use synthetic anthelmintics. However, incorrect and indiscriminate these products has caused emergence parasite resistance. Plants anthelmintic activity are used folk veterinary medicine, but it necessary to investigate scientifically validate low-cost phytotherapeutic alternatives for future gastrointestinal nematodes by family farmers. Thus, aim this study was evaluate vitro effect plant extracts from Melia...

The objective of this study was to evaluate the acaricidal activity volatile oils three species Croton, Euphorbiaceae, against cattle tick Rhipicephalus microplus. were obtained by hydrodistillation, analyzed GC–MS and GC-FID their evaluated larval packet test adult immersion test. from Croton conduplicatus Kunth, pulegiodorus Baill., two different collections grewioides Baill. (CG1 CG2) showed eucalyptol (24.09%), p-cymene (23.13%) methyl chavicol (83.59% 95.38%) as major compounds,...

Os experimentos envolvendo o uso de acaricidas sintéticos ou naturais, geralmente necessitam da utilização um solvente. Com a finalidade verificar sensibilidade do carrapato bovino Boophilus microplus diferentes solventes, larvas e fêmeas ingurgitadas deste ectoparasito foram expostas sete solventes em cinco concentrações, na ausência presença azeite oliva. resultados mostraram que oliva não produz estatisticamente testes com papel impregnado, fato verificado imersão adultos compostos...