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Desenvolvimento ponderal de bovinos mantidos à pasto e em confinamento, submetidos a dois tratamentos endoparasiticidas

Authors: Onizuka, Marcel Kenzo Vilalba;

Desenvolvimento ponderal de bovinos mantidos à pasto e em confinamento, submetidos a dois tratamentos endoparasiticidas

Abstract

O objetivo deste trabalho foi avaliar o desenvolvimento ponderal de bovinos precoces, tratados estrategicamente contra nematódeos gastrintestinais, em julho e setembro, com dois fármacos distintos, o sulfóxido de albendazole 10% e ivermectina 1%. O experimento teve duração de 112 dias e foi dividido em três etapas: E1 (pasto); E2 (pasto e suplemento); E3 (confinamento e eutanásia). Foram utilizados 36 bovinos (Braford), idade entre 18 e 20 meses, peso médio inicial 357 kg e naturalmente infectados com nematódeos gastrintestinais. Os animais foram distribuídos em três grupos experimentais (n=12), de acordo com peso e OPG: GI (controle); GII (sulfóxido de albendazole 10%); GIII (ivermectina 1%). Para análise dos dados foram avaliadas as variáveis peso, ganho em peso, OPG, helmintos remanescentes e rendimento de carcaça. Ao término do período experimental os animais foram eutanasiados para realizar a necropsia parasitológica. Em todas as análises estabeleceu-se como nível de significância 5%. Houve diferença significativa nas variáveis peso, ganho em peso, OPG e rendimento de carcaça quando comparou-se o GII aos demais grupos. Na necropsia parasitológica foi encontrada predominância das espécies Trichostrongylus axei e Cooperia punctata. Concluiu-se que os bovinos tratados estrategicamente com sulfóxido de albendazole 10%, em julho e setembro, apresentaram melhor desenvolvimento ponderal em relação aos demais grupos.

The objective of this study was to evaluate the weight development of early cattle strategically treated against gastrointestinal nematodes in July and September, with two different drugs, albendazole sulphoxide 10% and ivermectin 1%. The experiment lasted 112 days and was divided into three stages: S1 (pasture); S2 (pasture and supplement); S3 (feedlot and euthanasia). Were used 36 cattle (Braford), aged between 18 and 20 months, average weight 357 kg and naturally infected with gastrointestinal nematodes. The animals were divided into three experimental groups (n= 12), according to weight and EPG: GI (control); GII (albendazole sulphoxide 10%); GIII (ivermectin 1%). For data analysis was evaluated the variables weight, weight gain, EPG, remaining helminths and carcass yield. At the end of the experimental period the animals were euthanized to perform the parasitological necropsy. In all analyzes it was established as a significance level of 5%. There were significant differences in the variables weight, weight gain, EPG and carcass yield when compared to the GII to other groups. In parasitological necropsy found predominance of species Trichostrongylus axei and Cooperia punctata. It was concluded that cattle strategically treated with albendazole sulphoxide 10%, in July and September, showed better growth development than the other groups.

Pós-graduação em Medicina Veterinária - FCAV

Country
Brazil
Keywords

Braford - tratamento estratégico, Ivermectin, Gastrintestinal nematodes, Ivermectina, Albendazole sulphoxide, Sulfóxido de albendazole, Braford - Strategic treatment, Braford, Nematódeos gastrintestinais

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citations
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!
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