Sazonalidade de Haematobia irritans no Brasil Central

Bianchin, I.; Koller, W. W.; Detmann, Edênio

doi:10.1590/s0100-736x2006000200004

Cited by 18 publications

(13 citation statements)

References 15 publications

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“…Lima et al (2002) Nevertheless, horn fly infestation was observed throughout the year, with two infestation peaks (Figure 1), in April (also June) and October/November, coinciding with the end (autumn) and the beginning (spring) of the rainy season, respectively. Similar results were found by Lima et al (2003), in Araçatuba, SP; Barros (2001), in the Pantanal region, MS; and Bianchin et al (2006), in Campo Grande, MS.…”

Section: Resultssupporting

confidence: 85%

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

Almeida

Alari

Seno

et al. 2013

Rev. Bras. Parasitol. Vet.

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The aim of this investigation was to evaluate the efficiency of partial treatment of animals infested with horn flies. Forty-five Guzerat cows between 4 and 7 years of age were divided into three groups (15 cows per group). The treatments were as follows: in groups G33 and G100, 33.3 and 100% of the cows were treated with one insecticide-impregnated ear tag/animal (40% diazinon), respectively, while in the group GC, the cows were not treated (control). The flies on the cervico-dorsal-lumbar region of the cows, in all three groups, were counted every 14 days. The experiment lasted from September 2006 to September 2009. Over this period, six four-month ear tag treatments, with intervals of one to two months, were conducted on both treated groups. The animals of group G33 had a higher infection than those of group G100, and the number of flies ranged from 12 to 27 (group G33) and from 3 to 11 (group G100). However, groups G33 and G100 had lower infection levels than group GC, which presented from 45 to 87 flies. Partial treatment of cattle infested with horn flies using 40% diazinon insecticide is an efficient alternative for controlling this ectoparasite.

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Section: Resultssupporting

confidence: 85%

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

Almeida

Alari

Seno

et al. 2013

Rev. Bras. Parasitol. Vet.

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“…Horn fly infestations showed features similar to those observed in previous studies conducted in the region (BIANCHIN; ALVES, 2002;BIANCHIN et al, 2006). The mean number of infestations was low between May and October (x = 5 to 40) of both cycles, peaking in November and December (x = 160 and 170) of the first cycle and in November and April (x = 190 and 110) of the second cycle.…”

Section: Parasitological Datasupporting

confidence: 83%

Weight gain and control of endo- and ectoparasites of beef heifers treated with allopathic, herbal and homeopathic drugs

Catto

Bianchin

Feijó

et al. 2013

Rev. Bras. Parasitol. Vet.

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The aim of this study was to evaluate the efficacy of herbal, homeopathic and allopathic treatments for parasites in beef heifers during two experimental cycles of 318 and 313 days. Treatments: NC -negative control (untreated); HH -treated with homeopathic preparation Homeo bovis Parasitário  ; PC -(positive control) -treated with 10% moxidectina  and an acaricide formulation of cypermethrin, chlorpyrifos and piperonyl butoxide  ; HF -treated with homeopathic preparation Fator C&MC  ; and FN -treated with neem cake (torta de neem  ) and with neem oil (óleo de neem  ). Parasite egg count (EPG), horn fly (Haematobia irritans) and tick (Rhipicephalus (Boophilus) microplus) assessment and animal weighting were performed at 28-day intervals. Blood samples were collected at the first cycle to assess the immune response. Horn fly infestation was not affected by any treatment (P>0.05). The mean number of ticks, which was low in both cycles, was lower (P<0.05) in the first cycle in animals that received PC treatment. In both experimental cycles, the mean EPG of the PC-treated animals was lower (P<0.05) than the animals receiving other treatments. Treatments had no effect on the immune response (P>0.05). The animals treated with allopathic drugs were 22 to 30 kg heavier (P<0.05) than untreated animals or animals treated with alternative drugs.Keywords: Beef cattle, tick, nematodes, horn fly, anthelmintics, alternative control. ResumoO objetivo do trabalho foi avaliar a eficácia de tratamentos fitoterápicos, homeopáticos e alopáticos contra ecto e endoparasitas na recria de novilhas, em dois ciclos experimentais subsequentes de 318 e 313 dias. Tratamentos: CN -controle negativo -não tratado; tratamento HH -tratado com homeopático Homeo bovis Parasitário  ; tratamento CP -controle positivo -tratado com moxidectina 10%  e uma formulação acaricida contendo cypermetrina, clorpirifós e butóxido de piperonila  ; tratamento HF -tratado com homeopático Fator C&MC  e tratamento FN -tratados com torta de neem  e com óleo de neem  . A contagem de ovos nas fezes (OPG), a infestação por Haematobia irritans, Rhipicephalus (Boophilus) microplus e pesagem dos animais foram realizadas em intervalos de 28 dias. No primeiro ciclo foi coletado sangue para avaliar a resposta imume. A infestação por mosca-dos-chifres não foi influenciada por nenhum dos tratamentos (P>0,05). Nos dois ciclos o número médio de carrapatos foi baixo e apenas no primeiro foi menor (P>0.05) no tratamento CP em relação aos demais. A média de OPG no tratamento CP foi mais baixa que nos demais tratamentos nos dois ciclos experimentais (P<0,05). Não houve efeito de tratamentos na resposta imune. Os animais do tratamento CP ganharam entre 22 a 30 kg de peso vivo a mais (P<0,05) que os não tratados ou tratados com medicamentos alternativos.

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“…The highest mean RH occurred during the rainy season, which might have influenced the blood concentration of cortisol because RH favours the occurrence of ectoparasites such as haematophagous insects that disturb the animals, cause them stress, and interfere negatively with their metabolic processes (Bianchin et al, 2006).…”

Section: Resultsmentioning

confidence: 99%

Hormonal changes in female buffaloes under shading in tropical climate of Eastern Amazon, Brazil

et al. 2014

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-The hormonal responses of 20 female buffaloes raised under the sun (SS group) or in the shade (CS group) in Belém, Pará, Brazil, were assessed. The CS group (n = 10) was kept in a silvopasture system featuring Racosperma mangium, whereas the SS group (n = 10) was kept in paddocks without shade featuring Brachiaria humidicola, drinking water, and mineral salt. The following parameters were measured for each treatment: dry-bulb temperature (AT), relative humidity (RH), and black-globe temperature in order to calculate the globe temperature and humidity index (GTHI). Blood sample collections to quantitatively determine levels of cortisol, triiodothyronine (T 3 ), and thyroxine (T 4 ) were performed every 14 days, at 13.00 h. Different seasons of the year were also assessed: rainy (January-April), transition (May-July), and less rainy (August-December). Analysis of variance revealed that AT and the index of global temperature and humidity (GTHI) differed between groups; specifically, higher values were found in the SS group, which shows how important silvopastoral systems are in buffalo farming in tropical climates. Relative humidity was significantly different across seasons and particularly high in the rainy season. The treatments influenced cortisol such that higher values were observed in the SS group. The highest mean cortisol levels were recorded during the rainy and less rainy seasons, whereas the highest T 3 and T 4 levels were recorded only during the rainy season. Triiodothyronine and thyroxine were negatively correlated with AT and GTHI and positively correlated with RH. Silvopastoral systems provide thermal comfort to buffaloes, and the less rainy season is more likely to cause heat stress.

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Sazonalidade de Haematobia irritans no Brasil Central

Cited by 18 publications

References 15 publications

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

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

Weight gain and control of endo- and ectoparasites of beef heifers treated with allopathic, herbal and homeopathic drugs

Hormonal changes in female buffaloes under shading in tropical climate of Eastern Amazon, Brazil

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