Abstract The objective of this research was to evaluate the control coccidiosis in litter commercial poultry housing Western region Paraná, Brazil, which adopts sanitary management Salmonellosis. Three treatments were selected, proposed by an integrating company region: fermentation associated with liming (FL); (L) and (F). Stool samples collected from 18 housing, a completely randomized experi...

Parasites of the genus Eimeria infect a wide range of vertebrate hosts, including chickens. We have recently reported a comparative analysis of the transcriptomes of Eimeria acervulina, Eimeria maxima and Eimeria tenella, integrating ORESTES data produced by our group and publicly available Expressed Sequence Tags (ESTs). All cDNA reads have been assembled, and the reconstructed transcripts hav...

INTRODUCTION It has long been accepted that the resistance developed by fowls to reinfection with the various species of Eimeria which parasitize them is species specific (Tyzzer, Theiler & Jones, 1932; Johnson, 1938). However, careful examination of data obtained in this laboratory suggested that this might not be true for those species which appear to have similar properties. A preliminary re...

We evaluated the specificity and sensitivity of 11 previously described species differentiation and genotyping PCR protocols for detection of Cryptosporidium parasites. Genomic DNA from three species of Cryptosporidium parasites (genotype 1 and genotype 2 of C. parvum, C. muris, and C. serpentis), two Eimeria species (E. neischulzi and E. papillata), and Giardia duodenalis were used to evaluate...

The pathogenesis in chickens of the apicomplexan Eimeria praecox was compared with that of Eimeria acervulina, using intestinal lesions, mucosal integrity, body weight gain (BWG) and the feed conversion ratio (FCR) as criteria. Characteristics of each species were described by combinations of polymerase chain reaction assays and classic parasitological signs. There were considerable overlaps in...

The relationship between oocyst dose and lesion score was evaluated in trials involving five field isolates each of Eimeria acervulina, Eimeria maxima, and Eimeria tenella. Each trial included an uninfected, unmedicated treatment, and at least three treatments of unmedicated birds given different doses of oocysts from a single isolate. In four trials each with E. acervulina and E. tenella, and ...

Eimeria tenella is one of the important species as it causes caecal coccidiosis in chickens. Coccidiosis is believed to be controlled effectively using vaccines. The present study investigated the prophylactic efficacy of two locally prepared vaccines against caecal coccidiosis in broiler chicken. Broiler chicks (n = 80) were divided in four different groups A, B, C and D (n = 20 birds/group), ...

Commercial flocks infected by Eimeria species parasites, including Eimeria maxima, have an increased risk of developing clinical or subclinical coccidiosis; an intestinal enteritis associated with increased mortality rates in poultry. Currently, infection control is largely based on chemotherapy or live vaccines; however, drug resistance is common and vaccines are relatively expensive. The deve...

Avian coccidiosis, an intestinal disease caused by protozoan parasites of the genus Eimeria, occurs worldwide. It is considered to be one of the most economically important diseases of domestic poultry. For many years, prophylactic use of anticoccidial feed additives has been the primary means of controlling coccidiosis in the broiler industry and has played a major role in the growth of this i...

Cyclospora cayetanensis is a human-specific coccidian parasite responsible for several food and water-related outbreaks around the world, including the most recent ones involving over 900 persons in 2013 and 2014 outbreaks in the USA. Multicopy organellar DNA such as mitochondrion genomes have been particularly informative for detection and genetic traceback analysis in other parasites. We sequ...