Natural rubber (NR) films can reduce silver metal ions forming embedded nanoparticles, a process that could be described as green synthesis. The NR acting reactor generate and incorporate nanoparticles (AgNPs). Organic acids amino play crucial role in the formation of AgNPs. plasmon extinction obtained UV-visible spectrum shows presence film after dipping into solution nitrate at 80°C. Electron microscopic analysis confirms AgNPs characterization by atomic force microscopy change roughness...

ABSTRACT: Bovine respiratory disease (BRD) is considered the major cause of economic losses in dairy and beef cattle production. The study aimed to detect most important bacteria related tracheobronchial fluid samples healthy calves with clinical signs BRD Brazilian rural settlements. Hundred forty-one mongrel were randomly selected from 42 family farm herds Physical examination was performed classified as (n=100) (n=41). Tracheobronchial collected. Isolation molecular detection Mycoplasma...

The parasite Haemonchus contortus is one of the most pathogenic for small ruminants in tropical and subtropical regions worldwide, including Brazil. objective this study was to evaluate structural changes induced adult H. after vitro contact with Acacia mearnsii extract (AE), using scanning electron microscopy. Adult nematodes were collected from a naturally infected lamb. In assay parasites placed AE (100 mg ml-1), two hours at 37oC. used assays (exposed negative controls) analyzed an...

Background: There are few studies exploring the antioxidant properties of latex C-serum Hevea brasiliensis and their possible use for therapeutic application. Objective: This study investigated in vitro activity H. assessed cytotoxicity this fraction two human cell lines derived from normal tissue (MRC-5 CCD 1059sk. Chemical characterization was also assessed. Methods: Latex centrifuged phase tested free radical scavenging assays, such as hydroxyl nitric oxide radicals, hydrogen peroxide...

This study evaluated the genotoxicity, mutagenicity, antigenotoxicity, and antimutagenicity effects on biochemical parameters of oxidative stress Spondias dulcis bark ethanolic extract mice. The was in doses 500, 1000, 1500 mg/kg bw via gavage. To evaluate protective extract, benzo[a]pyrene (B[a]P) cyclophosphamide (CP) were chosen as DNA damage inducers. Genotoxicity antigenotoxicity by comet assay. Cytotoxicity, micronucleus test bone marrow peripheral blood. quantification catalase...

O parasitismo gastrintestinal em ovinos acarreta inúmeros prejuízos aos produtores rurais. controle é realizado basicamente através da administração de anti-helmínticos sintéticos o que estimula a seleção parasitas resistentes. uso plantas ricas taninos condensados (TC) apresenta-se como uma alternativa promissora no helmintos ovinos, reduzindo produtos químicos. Esse estudo avaliou efeito in vitro dos TC provenientes acácia (Acacia mearnsii) sobre eclosão ovos e motilidade larvas terceiro...

Medicinal plants have always been used for therapeutic purposes; however, some may contain toxic and mutagenic substances. The aim of this study was to assess the cytotoxic, genotoxic, mutagenic, antioxidant, antigenotoxic, antimutagenic effects bark ethanolic extract Spondias purpurea L. using male female Swiss albino mice. To determine protective extract, benzo[a]pyrene (B[a]P) cyclophosphamide (CP) were selected as cell damage inducers. examined at doses 500, 1000, or 1500 mg/kg body...

ABSTRACT: Bovine respiratory disease (BRD) is responsible for economic losses in cattle production. Viruses are categorized as primary etiological agents. The aims of this study were to evaluate the presence antibodies against bovine viral diarrhea virus (BVDV), herpes type 1 (BoHV-1), and syncytial (BRSV) healthy BRD calves from family farming relation clinical signs BRD. Hundred forty-five randomly selected physical examination was performed. Only 123 animals classified calves. Antibodies...

Gastrointestinal helminthiasis infections are considerate one of the main limiting factors in sheep production worldwide. The development parasite resistance to anthelmintics has caused significant losses small ruminant production. In search for new alternatives effective control gastrointestinal nematodes ruminants, phytotherapy is a promising field research an attempt reduce usage chemical treatments, aimed at ecological Many plants play crucial role maintaining animal and human life....

Helminths is a endoparasites that cause the major losses for profitable sheep production in Brazil. The increased development of resistant strains have enforced search sustainable alternatives. aim this paper was to provide information about control with banana leaves infected as alternative strategies and see its viability.In study, we performed two trials investigate anthelmintic properties on sheep. In Trial 1, twelve were artificially Trichostrongylus colubriformis; 2, eleven Haemonchus...

Pharmacological resistance to synthetic anthelmintic drugs is an important barrier the control of animal parasites. Thus, this study aimed evaluate action hydroalcoholic extract banana bracts (HEB) at 10%. Concentration. Hatch test and larval migration inhibition (LMI) were performed. Additionally, total content polyphenols, condensed tannins, flavonoids was determined, along with antioxidant activity HEB. In relation bovine species, HEB a concentration 2.5 mg mL-1 inhibited hatchability...

Helminthes are listed as one of the main problems facing development goat and sheep production. Haemonchus contortus is specie that causes greatest negative impact in ranching. Resistance to anti-parasitic drugs demand for residue-free animal-derived food products has elevated importance herbal treatments. The aim this study was develop an extract Musa spp. assess by vitro testing, anthelmintic effect on eggs larvae gastrointestinal nematodes sheep. Stool samples from naturally infected were...

The helminth infections represent a major economic barriers to sheep production and the growing resistance chemical anthelmintics has boosted natural therapies [1]. This is especially important for systems like biologic, organic, biodynamic because in this kinds of production, use chemicals prohibitive. Medicinal plants are considered by presence lactones, alkaloids, glycosides tannins [2]. Tannins act on gastrointestinal nematodes binding its cuticle digestive tract, so they promote damage...

Sera of 708 animals (cows, heifers and calves) from 13 dairy herds in the Londrina region Paraná, Brazil, were tested for antibodies to Anaplasma marginale by a competitive ELISA assay (cELISA). Ten 2 20 days old Holstein calves, one studied, monitored during year. Blood samples each calf collected monthly tick burden counting was performed every fortnight. Percentage infected erythrocytes established Giemsa-stained smears, sera examined cELISA detect against A. marginale. In herds, 92.94%...

Biomass and forage volume density the performance stocking rate of sheep on pastures with nitrogen-fertilized Tifton 85 subjected to a continuous system were evaluated. Four doses nitrogen (0, 100, 200, 400 kg ha-1 year), arranged in an experimental design randomized blocks four replications, analyzed. Sixteen paddocks Santa Inês used as test animals, coupled crossbreed regulating animal stocking. Nitrogen-fertilized increased amount biomass which affected weight gain grazing. When...

A novel composite material has been developed from natural rubber and leather waste, a corresponding patent filed. This new may be incorporated into textile footwear products. However, as waste contains chromium, the biocompatibility of this its safety for use in humans must investigated. The aim present study was to investigate presence chromium material, determine amount each form (trivalent or hexavalent), evaluate potential cytotoxic genotoxic effects two cell lines. cellular viability...

Uma alternativa para o controle de verminose na ovinocultura é a utilização plantas bioativas. Diversos estudos têm relacionado taniníferas com propriedades anti-helmínticas, destaque bananeira (Musa spp.). Assim, objetivo do trabalho foi qualificar e quantificar potencial anti-helmíntico extrato hidroalcoólico botão floral da 10% (EHB), nas concentrações 20, 40, 80, 160 320mg mL-1, sobre ovos larvas nematódeos gastrintestinais ovinos. O presente estudo laboratorial, natureza quantitativa,...

The present study, carried out at the Division for Research and Development of Adamantina, SP/Brazil, Agência Paulista de Tecnologia dos Agronegócios (APTA) – Polo da Alta Paulista, aimed to evaluate effect nitrogen fertilization on morphological composition, tiller density, leaf area index, light interception forage accumulation Tifton 85 pastures subjected continuous grazing. Treatments corresponded three control doses (0, 100, 200 400 kg N/ha/year), arranged in a randomized block design...

The purpose of this study was to assess in vitrocytotoxicity natural rubber (NR) latex membranes stabilized with different concentrations ammonia, as well evaluate possible changes oxidative stressparameters. To end, CHO-k1 cells were exposed NR for 24 h. Cytotoxicity wasassessed by the MTT assay and stress parameters established glutathione (GSH) malondialdehyde (MDA) levels. results show that ammonia present can deplete cell viability enhance GSH consumption cells. 2.0% cytotoxic lineage...