title: Evaluation of five treatments to control intestinal parasites in sheep in Ayapango, state of Mexico.
abstract: OBJECTIVE
  Intestinal parasites are one of the most common problems in sheep production systems. However, the strategies used to eliminate these parasites have not yielded satisfactory results. Therefore, the aim of this study was to determine the effect of five anthelmintics (with different active ingredients) on the parasite load in sheep.
  
  
  METHODS
  In this study, 107 Rambouillet breed sheep were randomly assigned to five groups. Next, fecal samples were taken directly from the rectum and sent to the laboratory for analysis. We then dewormed each group of sheep using different anthelmintic products: Ivermectin 1%/clorsulon 10%, levamisole 12%, closantel sodium 5%, ivermectin 10%, and closantel 5%/albendazole 3.75% with a dosage corresponding to each sheep. At 15 days post-treatment, we took fecal samples and performed a coproparasitoscopic study, using the Faust flotation technique to assess the presence or absence of parasite eggs and the McMaster technique to quantify eggs.
  
  
  RESULTS
  Ivermectin/clorsulon was more effective in eliminating parasites than other anthelmintics used, especially inHaemonchusspp.
  
  
  CONCLUSIONS
  The results of this study indicate that using ivermectin/clorsulon decreases the number of eggs in feces and is one alternative in controlling parasites in sheep, leading to a reduction in the incidence of health problems, and consequently, improved productivity.
authors.affiliation: Department of Agricultural Sciences and Natural Resources, University Center UAEM Amecameca, Autonomous University of Mexico State, Mexico.
authors.forename: Rafael
authors.initials: R
authors.lastname: Heredia
authors.affiliation: Department of Veterinary Medicine, University Center UAEM Amecameca, Autonomous University of Mexico State, Mexico.
authors.forename: Emma
authors.initials: E
authors.lastname: Aguilar
authors.affiliation: Department of Veterinary Medicine, Research Academician of Animal Health, University Center UAEM Amecameca, Autonomous University of Mexico State, Mexico.
authors.forename: Camilo
authors.initials: C
authors.lastname: Romero
authors.affiliation: Department of Veterinary Medicine, Research Academician of Animal Health, University Center UAEM Amecameca, Autonomous University of Mexico State, Mexico.
authors.forename: Linda
authors.initials: L
authors.lastname: Bautista
authors.affiliation: Department of Agricultural and Animal Production, Autonomous Metropolitan University Xochimilco, Mexico City, Mexico.
authors.forename: Germán
authors.initials: G
authors.lastname: Mendoza
keywords: anthelmintics; control; intestinal parasites; sheep