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Albendazol premix contra tricostrongilidosis subclinica en terneras de recria extensiva, sobre pastos limpios

Authors: Ramajo Martín, Vicente;

Albendazol premix contra tricostrongilidosis subclinica en terneras de recria extensiva, sobre pastos limpios

Abstract

[EN]Albendazole pemix in subclinical trichostongylidosis of heifers grazing on clem pastures. Fifteen calves of morucha race aged 6-8 months, asymptomatic infected by trichostonglylids (Cooperia, Ostertagia and Trichostrongylus spp.), were divided in two groupas of 7 and 8 animals respectively. The first group received Aldendazole with feed at a daily dose of 1.5 mg/Kg. b.w. during 21 days. The second group was designed as a control. Both groups were alloted in two fenced paddocks of natural patures free of parasites, over a period of time from November-1985 to February-1986. The eggs counts became negative in the faeces of the treated group at 7th day after dosing, and this result continue for the following 90 days, date of the end of the trial. In the control group was detected a gradual fall in the number of eggs, reaching very small figures at last of 90 days. There were non significant differences in the weight of the animals in both groups at 0 -30 - 60 - and 90 days. Under winter climatic conditions in the place of the obseervations, pasture contamination became apparent at 90 dyas (last of February). Larvae in herbage in the control paddock increased up to a level considered as acceptable ("acceptable pasture"), being seven times higher than in paddock of the treated group, where the herbage continued free of parasites ("safe pasture"). Results are discussed taking on consideration some aspects of the control of subclinical trichostrongylidosis in young cattle maintained on permanet pastures in continuous grazing (extensive management).

[ES]En Salamanca (España), durante el período de Noviembre-1985 a Febrero-1986 de un grupo de 15 terneras de raza morucha de 6-8 meses de edad, portadoras de infestaciones naturales asintomáticas de tricostronglilidos (Ostertagia, Cooperaria y Trichostronglylus), la mitad (7 terneras) recibieron Albendazol en el pienso a dosis de 1,5 mg./Kg. p.v. diarios durante 21 días. La otra mitad (8 terneras)fue utilizada como control. Ambos lotes se instalaron en parcelas de pasto natural libres de contaminación. Los huevos desaparecieron de las heces del lote tratado al 7º dia de medicación, manteniéndose esta situación durante los 90 días siguientes, fecha en que finalizaron las observaciones. En el lote control se apreció un descenso espontáneo y gradual en la eliminación de huevos, hasta alcanzar cifras muy pequeñas al cabo de los 90 días. No hubo diferencias significativas entre el peso de uno y otro lote a los 0-30-60 y 90 dias. La contaminación del pasto en las condiciones termoclimáticas invernales del lugar del estudio, se hizo patente a los 90 días (finales de Febrero), siendo 7 veces superior en la parcela del lote control, donde ascendió a un nivel de "aceptable" ("aceptable pasture") frente al de "pasto sin peligro" ("safe pasture") de la parcela correspondiente al lote tratado. Se discuten los resultados y se hacen algunas consideraciones acerca del control de la tricostrogilidosis subclimica en bovinos jóvenes de régimen extensivo

12 páginas, 4 tablas, 3 figuras.-- El autor agradece al Dr. Escudero Gil y a D. Juan Fco. Bustos el procesado y tratamiento estadístico de los datos.-- El autor dedica este trabajo al Dr. Simón en su jubilación, como muestra de agradecimiento por su ejemplar magisterio y en reconocimiento a su contribución al desarrollo de la Parasitología en España

Peer reviewed

Keywords

Liveweight gain, Pasture contamination, Heifers grazing, Albendazole, Subclinical trichostronglylidoses

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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