Flutuação populacional de muscídeos (Diptera, Muscidae) simbovinos e sua distribuição sobre o corpo do gado de leite, em Capão do Leão, RS, Brasil

Zimmer, Cristine Ramos; Araújo, Dani Furtado de; Ribeiro, Paulo Bretanha

doi:10.1590/s0103-84782010000300017

Cited by 5 publications

(4 citation statements)

References 13 publications

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“…Earlier results obtained in Brazil by Fagliari et al (1998) with healthy Holstein cattle were similar to the fibrinogen values actually measured. It can be assumed that heightened interaction with a hostile immune environment in Brazil, which includes infectious diseases such as leucosis (MEIRELLES et al, 2009) and ectoparasites (ÁLVAREZ et al, 2013;ZIMMER et al, 2010), contributes to this discrepancy in results between Europe and Brazil.…”

Section: Discussionmentioning

confidence: 99%

The glutaraldehyde test and its use in dairy cattle

Bernarski

Silva

Nascimento

et al. 2019

SCA

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During a physical examination of cattle, it is often difficult to evaluate inflammatory processes, particularly in cases where the inflammation occurs in deeper regions. The glutaraldehyde test (GT), carried out using a sample of whole blood, allows the visual and semiquantitative identification of an inflammatory process in cattle. Considering that there are few biochemical tests that can be used in the field, the objective of this study was to verify the efficacy of the GT in detecting and predicting mild and severe inflammatory processes in bovine species, classified according to a physical examination, and in the presence of different diseases or lesions. The GT was used in conjunction with a physical examination in 176 cows over 12 months of age, with additional laboratory evaluations of packed cell volume, total protein, albumin, globulin, and fibrinogen. Using a cutoff point at 3 minutes of coagulation, the GT showed a sensitivity of 35.1%, specificity of 94.1%, positive predictive value of 74.1%, and negative predictive value of 75.2%. The GT correctly detected the most severe inflammatory processes under the field conditions of this study. The GT is a diagnostic aid that can be used as a fast and simple screening test during the physical examination of cattle.

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Section: Discussionmentioning

confidence: 99%

The glutaraldehyde test and its use in dairy cattle

Bernarski

Silva

Nascimento

et al. 2019

SCA

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“…Outros estudos também relataram que na época chuvosa ocorre aumento de infestação da mosca-dos-chifres em sistemas extensivos, associado ao aumento de temperatura ambiente e umidade, favorecendo o ciclo da mosca [1,16,21]. É importante conhecer a dinâmica populacional das moscas, pois essa informação permitirá estabelecer com maior precisão o programa de controle estratégico em épocas do aumento das infestações nos animais [43].…”

Section: Discussionunclassified

Control of Haematobia irritans in the Minas Gerais Semiarid

Costa

Carneiro

Bastos

et al. 2016

Acta Scientiae. Vet.

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Background:Beef cattle is considered to be one of the most important economic activities, however, it presents problems in the production chain such as the occurrence of parasites that reduce the growth, performance, productivity and may cause mortalities occasionally. The chemical control is the most used alternative to reduce ectoparasites. Nevertheless, inappropriate management of insecticides has contributed to the selection of population resistant to the products available on the market. This paper aimed to evaluate the practices of management and the application of insecticides used to control horn flies in farms of dairy cattle in the North of the state of Minas Gerais. Materials, Methods & Results:It was visited 62 rural properties, which produce milk. Semi-structured questionnaires were applied in order to obtain information on the characteristics of the properties (location, size and type of the cattle), on the knowledge about the epidemiology of the horn flies, and on the practices adopted to the control of those parasites. The practices adopted include the moment of application of the insecticides, frequency of the cattle treatment, used products, method of application, number of animals treated, and choice and substitution criteria of insecticides. The data collected were tabulated in contingency tables, and they were analyzed using the chi-square test, considering a significance of 5%. The racial composition of the cattle in the farms was mainly mixed-race of unknown origin, representing 77% of the animals evaluated. In this research, it was reported a greater incidence of horn flies infestation on adult beef herd, and 23.6% of the producers reported occurrences of infestation in the whole herd, not differing by categories. The infestation peaks of the fly occurred from November to March. It was also found a greater frequency of pyrethroid use in the region (P < 0.001), where 43.1% of the producers used associations of pyrethroid or organophosphate to control the flies, high efficiency being reported. From the properties assessed, 92% presented inadequacy in the practices of control of horn flies, for instance, the lack of using cattle manure tank, the accumulation of open waste, the lack of rotation of insecticides, which can favor the selection of resistant flies. Discussion: In this paper, it was reported 77.19% of predominance of Haematobia irritans infestation from November to March mainly in animals with a higher percentage of European or mixed-race genetics. Such results corroborate with the literature, because it was verified the influence of race and hair color in the level of infestation in the animals, although, in the same race, each individual presents different susceptibilities. Taurine beef cattle are more susceptible to infestation by horn flies than zebu cattle. Thus, the lower the proportion of zebu cattle genetics in the herd, the greater the infestation. Taurine beef cattle are more infested because shows a greater number of sebaceous glands and greater concentration of testoster...

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“…Natural high infestations tend to show a smaller scope, lower intensity and shorter duration than outbreaks. Fewer than 30 stable flies per host are normally observed for a few weeks during natural infestation peaks ( Rodríguez-Batista et al, 2005 ; Zimmer et al, 2010 ). However, during outbreak infestations hundreds of flies per animal can occur for up to several months ( Herrero et al, 1989 ; Solórzano, 2014 ).…”

Section: Introduction and General Aspectsmentioning

confidence: 99%

Stable fly outbreaks in Brazil: a 50-year (1971-2020) retrospective

Barros

Soares

Barros

et al. 2023

Rev. Bras. Parasitol. Vet.

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Over the last decades, stable fly (Stomoxys calcitrans) outbreaks associated with agricultural and/or livestock production systems have become a serious problem in some Brazilian locations. This article presents a survey on the history, evolution and mapping of such outbreaks in Brazil over five decades (1971-2020). Outbreaks (n= 579) were recorded in 285 municipalities from 14 states, mainly associated with by-products from the ethanol industry (82.7%), in natura organic fertilizers (12.6%) and integrated crop-livestock systems (3.1%). Few cases were reported until the mid-2000s, progressively increasing since then. Outbreaks associated with ethanol mills occurred in 224 municipalities, mainly in Southeast and Midwest states, while those associated with organic fertilizers (mainly poultry litter and coffee mulch) affected 39 municipalities, mostly in the Northeast and Southeast states. More recently, outbreaks in integrated crop-livestock systems during the rainy season have occurred in Midwest states. This survey highlights the magnitude of the problem of stable fly outbreaks in Brazil and its relationship with environmental public policies, agricultural production chains and regional trends. Specific public actions and policies are urgently needed to prevent their occurrence and impact in the affected regions.

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Flutuação populacional de muscídeos (Diptera, Muscidae) simbovinos e sua distribuição sobre o corpo do gado de leite, em Capão do Leão, RS, Brasil

Cited by 5 publications

References 13 publications

The glutaraldehyde test and its use in dairy cattle

The glutaraldehyde test and its use in dairy cattle

Control of Haematobia irritans in the Minas Gerais Semiarid

Stable fly outbreaks in Brazil: a 50-year (1971-2020) retrospective

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