Efficiency of partial treatment of cattle infested with horn fly using 40% diazinon

Almeida, Fabiana Alves de; Alari, Fernando de Oliveira; Seno, Maria Conceição Zocoller; Lima, M. M.; Nascimento, Sheila Tavares; Neto, Marcos Chiquitelli

doi:10.1590/s1984-29612013000400016

Cited by 5 publications

(3 citation statements)

References 10 publications

(11 reference statements)

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“…The percentage of animals to be treated varies according to the frequency of distribution of parasites in the herd, which depends mainly on the cattle breed, season, and ectoparasite species. Different percentages were used in previous work, ranging from 4.9 to 54.3% for R. microplus [ 34 , 35 ] and 33.3% for H. irritans [ 36 ]. All of them resulted in reduction in the level of parasites on the animals and economic benefits.…”

Section: Discussionmentioning

confidence: 99%

Seasonal Variation and Frequency Distribution of Ectoparasites in Crossbreed Cattle in Southeastern Brazil

Costa

Guimarães

Lima

et al. 2014

Journal of Veterinary Medicine

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The aims of this study were to evaluate the seasonal variation and frequency distribution of Rhipicephalus (Boophilus) microplus, Haematobia irritans, and Dermatobia hominis on crossbred heifers under field conditions in the northeast of Minas Gerais state, southeastern Brazil. From November 2007 to September 2009 (23 months), 40 heifers aged 16.6 ± 2.4 months were divided into groups A (1/4 Holstein × 3/4 Gir) and B (1/2 Holstein × 1/2 Gir) and had the monthly infestation estimated along with the climatic conditions. The mean maximum and minimum temperatures were 28.5 and 19°C, respectively. The ectoparasites were present on animals in all months of the year. The levels of ticks on the animals were low (3.0 ± 0.2 ticks/animal), with the highest density in midwinter. The temperature was the climatic factor that most influenced the tick levels. The population of H. irritans (13.9 ± 0.3 flies/animal) and D. hominis (1.5 ± 0.2 larvae/animal) on heifers was more influenced by rainfall and exhibited two population peaks during the year. 1/2 Holstein heifers harbored significantly more H. irritans and D. hominis than 1/4 Holstein heifers. The results are discussed considering the most appropriate periods to apply ectoparasiticides and the genetic make-up of the animals.

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Section: Discussionmentioning

confidence: 99%

Seasonal Variation and Frequency Distribution of Ectoparasites in Crossbreed Cattle in Southeastern Brazil

Costa

Guimarães

Lima

et al. 2014

Journal of Veterinary Medicine

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“…For many years, anthelmintics were effective in controlling intestinal parasites in ruminants. However, one consequence of the widespread use of these drugs has been the emergence of resistant nematodes, a problem that is widespread in the sheep farming systems worldwide (Lopes et al, 2009;Palcy et al, 2010;Soutielo et al, 2010;Almeida et al, 2013).…”

Section: Known Anthelmintic Resistance In Ruminants and Its Diagnosismentioning

confidence: 99%

Aspects of epidemiology and control of gastrointestinal nematodes in sheep and cattle – Approaches for its sustainability

Bresciani¹,

Coelho²,

Gomes³

et al. 2017

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A B S T R A C TGastrointestinal helminthosis in ruminants cause considerable economic losses, with marked impairment of productivity of these animals, especially in poor management systems and poor parasite control programs. Infections caused by these helminths represent an obstacle to the expansion of the sheep industry. Furthermore, high parasite burdens were associated with increased mortality in calves. The recommended methods for the control of gastrointestinal helminths not always have practical applicability. We discuss important epidemiological and control aspects concerning gastrointestinal nematodes in sheep and cattle. Thus, sustainable worm control practices are recommended. Each farm has a specific situation and a management system directed to a specific parasitic infection must be adopted.Keywords: cattle, sheep, gastrointestinal helminths, epidemiology, control, sustainability. R E S U M OHelmintíases gastrintestinais em ruminantes acarretam perdas econômicas relevantes, com marcante prejuízo da produção animal, especialmente em sistemas de maneio precários e em programas de controle parasitário deficientes. Infeções causadas por esses helmintos representam um obstáculo para a expansão do mercado ovino. Ademais, altas cargas parasitárias foram associadas à elevada mortalidade em bezerros. Os métodos recomendados para o controle de helmintos gastrintestinais nem sempre apresentam aplicação prática. Nós discutimos os aspectos importantes sobre nematodes gastrintestinais em ovinos e caprinos. Sendo assim, práticas de controle sustentáveis são recomendadas. Cada propriedade possui uma situação em particular e um sistema de maneio direcionado deve ser adotado para as infecções parasitárias específicas.Palavras -chave: bovinos, ovinos, helmintos gastrintestinais, epidemiologia, controlo, sustentabilidade. 665Bresciani et al., Gastrointestinal nematodes in sheep and cattle

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“…One of these alternative means for control is selective control (SC), which consists of applying acaricide when the tick infestation level goes above a certain limit. This selective control method was first used with great success for controlling haemonchosis in sheep, through the Famacha® method (Molento, 2009), and it has also been used for controlling other parasites, such as the cattle tick (Molento et al, 2013) and the horn fly (Almeida et al, 2013). Selective control is based on the fact that the parasite-host relationship follows a negative binomial distribution (Maiorano et al, 2019), in which a small portion of the population has the highest infestation levels.…”

Section: Introductionmentioning

confidence: 99%

Selective control of Rhipicephalus microplus in a dairy cattle herd from different genetic groups

Andrade

Giglioti

Gutmanis

et al. 2022

Rev. Bras. Parasitol. Vet.

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Alternatives for Rhipicephalus microplus control are needed in the light of its resistance to acaricides. One of the ways to decrease the use of acaricides in a herd is selective control (SC). In the present study, SC was evaluated in a dairy herd consisting of different genetic groups: Holstein, Jersey, crossbreed and Girolando. Ticks were counted in the right anterior third region on around 90 cows, totaling nine evaluations at intervals of 21 days. Commercial pour-on acaricide was applied only when the infestation was greater than or equal to eight ticks larger than 4 mm in the anterior third region. Tick counts were transformed into log10 and analyzed using mixed models. There was significant difference among groups: Holstein had the highest averages of tick numbers, as expected, although 34.3% did not receive tick treatment. In the other groups, SC reduced the use of acaricides by 79.1% for crossbreed, 81.5% for Jersey and 94.9% for Girolando. The criterion used for applying the acaricide successfully kept the tick population under control. The great advantage of SC was savings to the system, without harming the animals, in addition to generate fewer residues in the animals and in the environment.

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Efficiency of partial treatment of cattle infested with horn fly using 40% diazinon

Cited by 5 publications

References 10 publications

Seasonal Variation and Frequency Distribution of Ectoparasites in Crossbreed Cattle in Southeastern Brazil

Seasonal Variation and Frequency Distribution of Ectoparasites in Crossbreed Cattle in Southeastern Brazil

Aspects of epidemiology and control of gastrointestinal nematodes in sheep and cattle – Approaches for its sustainability

Selective control of Rhipicephalus microplus in a dairy cattle herd from different genetic groups

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