Homeopatia no controle de carrapatos (Rhipicephalus microplus) em bovinos mestiços leiteiros

Abstract

The dairy cattle is a major financial activities in Brazil, but suffers by the presence of parasites, particularly Rhipicephalus microplus. Treatment of parasitic diseases with allopathic products is common, but leave residues in meat and milk, besides to induce resistance in ticks. Homeopathy has been applied successfully by some producers. This work aimed to evaluate the effect biotherapic against ticks in 36 crossbred female cattle Bos taurus taurus x Bos taurus indicus, divided into three experimental groups of 12 animals each. The T1 group received biotherapics, T2 group was placed in the same pasture with the same management and received placebo, the T3 group was placed in a separate pasture and received placebo. Daily engorged gravid females (above 4 mm) were counted and notes were taken for 4 months, the animals were randomly separated considering susceptibility to ectoparasite. After this period, daily counting continued and recording the number of engorged female ticks above 4 mm. The monthly sum of gravid females was obtained by observing the daily count of gravid females between the 20th month and 19th day of the following month Each month, the CBC was performed and measured the-glutamyl GGT concentration indices cholinesterase, alkaline phosphatase-ALP, AST aspartate aminotransferase, and gamma in blood plasma. The experiment was conducted in a completely randomized design in layout plots in time consists of three groups, seven months review with 12 repetitions totaling 252 reviews from 23 variables , 15 were provided by the CBC, four of the plasma biochemical examination, two of the observations of parasites and two from the observations of animals. It was found that the T1 group gravid females had engorged less than T2 which had engorged females less than T3. Gravid females with morphological changes were found adhered to the skin of the T1 group and three times occured an infestation of the parasite life stages which didn\'t ingurgitate in the T1 group. In blood tests revealed that there were no statistical differences between groups, but platelet ,eosinophils in group T1 differ between months , despite being among the values considered normal for species. Enzymes observed were within normal limits and there was no statistical difference between months or between groups. The animals had body condition scores between 2 and 4 and the milk produced was within the levels of the MAPA Normative Instruction 62. The biotherapic reduced the infestation of ticks in the T1 group.