Navegando por Autor "Athayde, Ana Célia Rodrigues"
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Item Biological control of goat gastrointestinal helminthiasis by Duddingtonia flagrans in a semi-arid region of the northeastern Brazil(Veterinary Parasitology, 2012-08-13) Braga, Fabio Ribeiro; Araújo, Jackson Victor de; Vilela, Vinícius Longo Ribeiro; Feitosa, Thais Ferreira; Souto, Diego Vagner de Oliveira; Santos, Herbis Eduardo da Silva; Silva, Gabriela Lucena Longo da; Athayde, Ana Célia RodriguesThe aim of this study was to test a pellet formulation in a sodium alginate matrix of Duddingtonia flagrans in the biological control of goat gastrointestinal helminths kept in a native pasture in a semi-arid region of Paraíba state, northeastern Brazil. An area of 2.4 ha was divided into three paddocks, where groups of seven goats ware formed. Each group received the following treatments during the months of March to August 2011: D. flagrans group, received 3 g of pellets containing D. flagrans (AC001) for each 10 kg/l. w., twice a week; Moxidectin 0.2% group, received 0.2 mg/kg of Moxidectin 0.2% orally, every 30 days; Control group, received 3 g of pellets without fungi per 10 kg/l. w., twice a week. Each month, a tracer goat was placed in each group for 30 days and then sacrificed and necropsied. The D. flagrans group showed a greater reduction in EPG, increased weight gain, higher rates of packed cell volume and lower parasitic load burden in the tracer goats compared to Moxidectin 0.2% and Control groups. D. flagrans was efficient in controlling goat gastrointestinal helminthiasis in a semi-arid region of northeastern Brazil.Item Coadministration of nematophagous fungi for biological control over gastrointestinal helminths in sheep in the semiarid region of northeastern Brazil(Veterinary Parasitology, 2016-03-30) Vilela, Vinícius Longo Ribeiro; Feitosa, Thais Ferreira; Braga, Fabio Ribeiro; Araújo, Jackson Victor de; Santos, Antonielson dos; Morais, Dayana Firmino de; Souto, Diego Vagner de Oliveira; Athayde, Ana Célia RodriguesThis study aimed to evaluate coadministration of Duddingtonia flagrans and Monacrosporium thaumasium in a sodium alginate matrix for controlling gastrointestinal helminths in young and adult sheep in the semiarid region of northeastern Brazil. An area of 1 ha was divided into two paddocks, in which two experimental groups (fungus and control) were formed, each consisting of six adult females and ten young males. In each group, two subgroups were formed in accordance with the animal category (adult or young). In the fungus group, each animal received 3 g of pellets containing 0.6 g of fungal mycelium, with 0.3 g of D. flagrans and 0.3 g of M. thaumasium for each 10 kg of body weight, in their feed twice a week, for six months. In the control group, each animal received 3 g of pellets without fungus for each 10 kg of body weight, in their feed twice a week, for six months, serving as a witness group. Reductions in numbers of eggs per gram of feces of 76% among the adult sheep in the fungus group and 83% among the young sheep in the fungus group were observed, in comparison with their respective control subgroups. The groups that received these fungi needed less salvage deworming and presented better packed cell volume percentages, better weight gain and lower levels of L3/kg dry matter in their paddock than the control groups. Thus, it was concluded that coadministration of D. flagrans and M. thaumasium was effective in controlling gastrointestinal helminths of adults and young sheep in the semiarid region of northeastern Brazil.Item Efficacy of Monacrosporium thaumasium in the control of goat gastrointestinal helminthiasis in a semi-arid region of Brazil(Parasitology Research, 2013-02) Braga, Fabio Ribeiro; Araújo, Jackson Victor de; Vilela, Vinícius Longo Ribeiro; Feitosa, Thais Ferreira; Lucena, Samuel Cavalcante de; Dantas, Elaine Silva; Athayde, Ana Célia Rodrigues; Silva, Wilson WouflanThe aim of the present study was to test a pellet formulation of Monacrosporium thaumasium in a sodium alginate matrix in the biological control of goat gastrointestinal helminthiasis in a semi-arid region of northeastern Brazil. An area of 2.4 ha was divided into three paddocks, with seven goats kept on each paddock, during the months of March to August 2011: group 1 received 3 g/10 kg live weight of M. thaumasium pellets (NF34a) twice a week; group 2 was given 0.2 mg/kg of 0.2 % moxidectin orally every 30 days; and group 3 received 3 g/10 kg live weight of pellets without fungus twice per week. Each month, two tracer goats was placed in each group for 30 days and then killed and necropsied. The M. thaumasium group showed a 34 % reduction in eggs per gram, higher packed cell volume rates and a lower parasitic load in the tracers compared with the other groups. The 0.2 % moxidectin group had weight gain of 5.7 kg; the M. thaumasium group, 3.6 kg; and the control group had an average reduction in weight of 1.1 kg. The use of M. thaumasium pellets may be effective as an alternative method to control goat gastrointestinal helminthiasis in the semi-arid region of northeastern Brazil.