The seroprevalence of bovine neosporosis in dairy herds in four provinces of the Mantaro Valley, Peru and the main risk factors involved, through the ELISA test were determined. Blood samples were taken from 425 animals in 37 herds and an epizootic survey was applied in parallel. The general sample prevalence for bovine neosporosis was 15.3%, the prevalence per herd was 12.8% and the herd prevalence was 56.8%, without significant differences between provinces. The massive and constant presence of rats (OR: 18,417), inadequate health management (OR: 7.5) and inadequate personnel management (OR: 12.75) were identified as risk factors for the presentation of neosporosis. An association was found between high prevalence of neosporosis with the presence of repeat breeder cows in the herd, with cases of abortions and anomalous births, and with the use of water from ditches and wells for drinki...

The seroprevalence of bovine viral diarrhoea (DVB) in dairy herds and the presence of persistently infected animals in the four provinces of the Mantaro Valley, Peru were determined using the ELISA technique. A total of 425 blood samples were taken from animals of 37 herds and an epizootic survey was applied in parallel. The prevalence of DVB of the four provinces was 66.3% and the prevalence/herd of 64.8%. The province of Concepción showed the highest sample and herd prevalence (75.2 and 75.5%, respectively, and Huancayo had the lowest (48.3 and 52.3%, respectively). The prevalence of PI animals with DVB in the four provinces was 5.8%. Risk factors for the presentation of DVB were the intensive breeding system (OR: 6.545), open herd type (OR: 6.33), use of artificial insemination (OR: 7.895) and massive presence of rats (OR: 5.714). There was a positive association between high prevale...

The aims of this study were to determine the dynamics of seroconversion of bovine viral diarrhea (DVB) and neosporosis, as well as the presence of animals persistently infected (PI) with the DVB virus in cattle farms of two experimental stations of the Universidad Nacional del Centro del Peru: In total, 111 Brown Swiss cattle in the EEA El Mantaro and 39 Holstein cattle in the GA Yauris, both located in the central highlands, Junín Region, Peru were used. Three evaluations (August 2015, and February and August 2017) were performed to detect serum antibodies against vBVD and N. caninum, and DVB antigens, using ELISA tests. The average prevalence of DVB in the EEA El Mantaro was 73.5%, the seroconversion dynamics in the herd was increasing over time, and the prevalence of PI animals was 5.4%. For GA Yauris, the average prevalence of DVB was 16.67%, the seroconversion dynamics were stable ...

The association of gastrointestinal parasitism with body weight, haematocrit and the FAMACHA method was determined in Junín sheep (lambs and rams) from the Stud group of SAIS Túpac Amaru Ltda. No. 1, Junín Region, Peru. The study was carried out in two seasons: May (dry) and October (rainy). In total, 109 rams and 98 lambs were sampled in May and 89 rams and 85 lambs in October 2018. There was a negative correlation between the haematocrit and the transformed value of parasite load. All the animals were positive to gastrointestinal parasites, finding a higher parasite load in males in October and in May in females. In May there were more cases of animals resistant to parasitism than in October. The highest frequency of gastrointestinal parasites was Nematodirus (50%), followed by Trichostrongylus (25%) and Ostertagia (15%).

Se determinó la seroprevalencia de neosporosis bovina en hatos lecheros de las cuatro provincias que conforman el Valle del Mantaro, Región Junín, Perú, y los principales factores de riesgo involucrados, mediante la prueba ELISA. Se tomaron muestras de sangre de 425 animales en 37 hatos y se aplicó en forma paralela una encuesta epizootiológica. La prevalencia muestral general para neosporosis bovina fue 15.3%, la prevalencia/hato de 12.8% y la prevalencia predial de 56.8%, sin diferencias significativas entre provincias. Se identificaron como factores de riesgo para la presentación de neosporosis a la presencia masiva y constante de ratas (OR: 18.417), el inadecuado manejo sanitario (OR: 7.5) y el inadecuado manejo de personal (OR: 12.75). Se encontró asociación entre altas prevalencias de neosporosis con la presencia de vacas repetidoras en el hato, con los casos de abortos y ...

Se determinó la seroprevalencia de la diarrea viral bovina (DVB) en hatos lecheros de las cuatro provincias que conforman el Valle del Mantaro, Región Junín, Perú, así como la presencia de animales persistentemente infectados, mediante la técnica de ELISA. Se tomaron 425 muestras de sangre de animales de 37 hatos y se aplicó paralelamente una encuesta epizootiológica. La prevalencia muestral de DVB para las cuatro provincias fue 66.3% y la prevalencia/hato de 64.8%. La provincia de Concepción registró la prevalencia muestral y por hato más altas (75.2 y 75.5%, respectivamente) y Huancayo presentó las más bajas (48.3 y 52.3%, respectivamente). La prevalencia de animales PI con DVB en las cuatro provincias fue de 5.8%. Los factores de riesgo para la presentación de DVB fueron el sistema intensivo de crianza (OR: 6.545), tipo de hato abierto (OR: 6.33), inseminación artificia...

The aims of this study were to determine the dynamics of seroconversion of bovine viral diarrhea (DVB) and neosporosis, as well as the presence of animals persistently infected (PI) with the DVB virus in cattle farms of two experimental stations of the Universidad Nacional del Centro del Peru: In total, 111 Brown Swiss cattle in the EEA El Mantaro and 39 Holstein cattle in the GA Yauris, both located in the central highlands, Junín Region, Peru were used. Three evaluations (August 2015, and February and August 2017) were performed to detect serum antibodies against vBVD and N. caninum, and DVB antigens, using ELISA tests. The average prevalence of DVB in the EEA El Mantaro was 73.5%, the seroconversion dynamics in the herd was increasing over time, and the prevalence of PI animals was 5.4%. For GA Yauris, the average prevalence of DVB was 16.67%, the seroconversion dynamics were stable ...

Se realizó un estudio epidemiológico de Diarrea viral bovina (DVB) y neosporosis en 425 vacas en producción de 37 hatos del Valle del Mantaro-Región Junín, Perú, mediante ELISA e identificando sus factores de riesgo aplicando una encuesta. Para DVB se encontraron prevalencias: muestral 66.33%, predial 97.3% (36/37) y promedio/hato 64.78%, Concepción tuvo las prevalencias promedio/hato y muestral más altas, luego Jauja, Chupaca y Huancayo; la prevalencia de animales persistentemente infectados (PI) con DVB fue 5.8%. Las prevalencias de neosporosis fueron: muestral 15.29%, predial 56.76% (21/37) y promedio/hato 12.76%; Huancayo registró la más alta prevalencia muestral y Concepción la prevalencia promedio/hato más alta, Jauja registro los menores valores para ambas. Fueron factores de riesgo para DVB: número servicios/preñez (2-3 OR: 3.9 y >3 OR: 32); vacas repetidoras (OR: 5...

The study was conducted in the district of Tamburco (Abancay, Apurimac, Peru) with the aim of comparing interpretation criteria of California Mastitis Test (CMT) in the diagnosis of subclinical mastitis in cattle. Two hundred and nine cows from a population of 459 hand-milked cows belonging to 95 breeders were used. A total of 828 functional mammary quarters were evaluated and the main criteria for CMT interpretation were estimated. The prevalence of subclinical mastitis in cows was 72.3 and 65.6%, and in total mammary quarters was 48.7 and 42.3% with and without considering traces as positives respectively, and without statistical difference. The estimated prevalence in individual mammary quarters varied between 48.3 to 49.3% and depending of the mammary quarter between 40.0 to 45.5% with and without considering traces as positives respectively (p<0.05). More intense positive reactio...

The study was conducted in the district of Tamburco (Abancay, Apurimac, Peru) with the aim of comparing interpretation criteria of California Mastitis Test (CMT) in the diagnosis of subclinical mastitis in cattle. Two hundred and nine cows from a population of 459 hand-milked cows belonging to 95 breeders were used. A total of 828 functional mammary quarters were evaluated and the main criteria for CMT interpretation were estimated. The prevalence of subclinical mastitis in cows was 72.3 and 65.6%, and in total mammary quarters was 48.7 and 42.3% with and without considering traces as positives respectively, and without statistical difference. The estimated prevalence in individual mammary quarters varied between 48.3 to 49.3% and depending of the mammary quarter between 40.0 to 45.5% with and without considering traces as positives respectively (p<0.05). More intense positive reactio...