Browsing by Subject "Coccidiosis"

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    Associated risk factors influencing ovine Eimeria infections in southern Spain
    (Elsevier, 2018) Carrau Garreta, Tessa; Silva, L.M.R.; Pérez, D.; Failing, K.; Martínez Carrasco-Pleite, Carlos; Macías, J.; Taubert, A.; Hermosilla, C.; Ruiz de Ybáñez Carnero, María del Rocío; Sanidad Animal
    Eimeria infections are common in sheep industry worldwide nonetheless very little is known on infection dynamics and associated risk factors influencing the outcome of clinical ovine coccidiosis. The aim of the present work was to analyse intrinsic (e. g. host age) and extrinsic (flock size, farm size and animal density) risk factors influencing dynamics of Eimeria spp. infections in sheep farms of the semi-arid region of Murcia in southern Spain. Overall, 64 ovine flocks in Murcia were surveyed and a total of 396 faecal samples were collected between May and July 2015. Flotation and McMaster techniques were performed for parasitological investigation. Excreted oocysts were identified on the basis of morphological as well as morphometric characteristics. In all analysed samples Eimeria spp. oocysts (100%) were found and 11 different Eimeria species were identified. Most prevalent species was E. ovinoidalis (97%) followed by E. parva/E.pallida (97%), E. weybridgensis (90.9%) and E. crandallis (89.4%), respectively. Concomitant infections with more than one Eimeria species were observed in all analysed samples. Analysis of intrinsic/extrinsic risk factor revealed age, herd/farm size and animal density to be the main factors significantly influencing Eimeria oocysts per gram of faeces counts (OPG) and overall prevalence of Eimeria spp. infections in sheep.
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    Evaluating the efficacy of cinnamaldehyde and Echinacea purpurea plant extract in broilers against Eimeria acervulina
    (Elsevier, 2011-09-15) Orengo, Juan; Ruiz de Ybáñez Carnero, María del Rocío; Madrid, Josefa; del Río, Laura; Catalá-Gregori, Pablo; García, V.; Hernández, Fuensanta; Buendía Marín, Antonio Julián; Sanidad Animal
    Coccidiostats could be phased out as feed additives before 1 January 2013 for public health and food safety reasons, and, as a replacement, bioactive compounds found in plants are currently being investigated since they are more likely to be found acceptable by consumers. The aim of our study was to evaluate the effect of cinnamaldehyde (CIN) and Echinacea purpurea plant extract (EP) as additives by analyzing the performance traits, oocyst excretion and intestinal lesions following experimental infection with Eimeria acervulina. A total of 72 Ross male broilers were raised from 1 to 35 d and randomly assigned to four dietary treatments: control, without additives (C); 150 mg kg−1 cinnamaldehyde (CIN); 1000 mg kg−1 E. purpurea plant extract (EP); 150 mg kg−1 cinnamaldehyde plus 1000 mg kg−1 E. purpurea plant extract (CIN + EP). At 25 d, 12 chickens per treatment were orally infected with E. acervulina. Coccidia infestation led to lower performance but with no significant differences between the infected groups. Oocyst output reached its peak from 6 to 9 d post-infection in all treatments. At duodenal level, gross lesion scores were lower for cinnamaldehyde diets (P < 0.05). A similar trend was observed in the microscopic lesion scores, with a nonsignificant reduction as a result of cinnamaldehyde addition (P > 0.05). Scoring methods for macro- and microscopic lesions showed a positive linear relationship (G = +0.70). Further studies are necessary to assess the possible anticoccidian action of the cinnamaldehyde and its value as an alternative or adjunct in therapeutic or prophylactic strategies.
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    Records of Eimeria spp. and their patterns of excretion in captive North African Gazelles
    (Helminthological Society of Washington, 2001) Ruiz de Ybáñez Carnero, María del Rocío; Ortiz, Juana; Garijo Toledo, María Magdalena; Espeso, Gerardo; Abaigar, Teresa; Cano, Mar; Sanidad Animal
    The species of Eimeria occurring in 3 species of captive gazelles (Gazella dama mhorr, Gazella cuvieri, and Gazella dorcas neglecta) were identified. This is the first report of Eimeria pallida, Eimeria elegans, and Eimeria gazella in these hosts and also the first report of E. elegans and E. gazella in Spain. Feces were collected from each of 9 young gazelles for periods of 3-7 mo to determine their oocyst shedding profile. Most oocysts appeared at 20-25 d, peaked, and decreased to undetectable levels between 40 and 115 d. Eimeria gazella delayed its excretion, which continued at low levels throughout the observation stage. No clinical signs of infection were observed in the gazelles during the study.
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    Valoración sobre la presencia y el control sanitario del coccidio Aggregata octopiana en pulpo común procedente de acuicultura
    (Murcia, Universidad de Murcia, Servicio de Publicaciones, 2008) Peñalver Sánchez, José; María Dolores Pedrero, Emilio; Muñoz Palancas, Jose Adolfo; Cerezo, J.; García, B.; Viuda, E.; Facultad de Veterinaria