Rojas-Moncada Juan, Torrel Teófilo, Vargas-Rocha Luis
Parasitic and Vector-Borne Diseases Research Group: Integrated Control and Affiliated Therapeutics, Universidad Nacional de Cajamarca, Av. Atahualpa N° 1050, PC. 06003, Cajamarca, Perú.
Facultad de Ciencias Veterinarias, Universidad Nacional de Cajamarca, Cajamarca, 06003, Peru.
Trop Anim Health Prod. 2025 Jun 13;57(5):265. doi: 10.1007/s11250-025-04522-4.
Animals raised in rural areas often lack sufficient healthcare and nutrition due to limited access to professional services or state programs. This situation is worsened by extensive grazing practices, which expose cattle to parasites. This study aimed to identify helminths and coccidia by examining fecal eggs and oocysts in creole cattle from small-scale producers raised under grazing conditions at altitudes above 3,000 m in the rural area of Chota district, Cajamarca, Peru. Fecal samples from 385 cattle were analyzed, with 357 (92.73 ± 2.59%) testing positive for parasite eggs and oocysts. At the farm level, all (37/37) were infected with parasites. Natural sedimentation identified eggs of Fasciola hepatica (19.48 ± 3.96%). Flotation concentration using a saturated sugar solution revealed eggs of strongylid-like nematodes (SLN) (81.56 ± 3.87%), Capillaria spp (1.82 ± 1.33%), Trichuris spp (2.86 ± 1.66%), Toxocara vitulorum (2.08 ± 1.42%), Moniezia spp (8.05 ± 2.72%), and oocysts of Eimeria spp (55.58 ± 4.96%). The parasitic load of SLN and Eimeria spp was associated with sex and showed a moderate negative correlation with age (p < 0.05). Females exhibited an odds ratio (OR) of 0.393 [95%CI 0.187 - 0.825] for SLN infection, OR = 0.298 [95%CI 0.177 - 0.503] for Eimeria spp, and OR = 2.206 95%CI 1.111 - 4.382] for F. hepatica compared to males (p < 0.05). Younger cattle had a higher probability of infection with SLN, Moniezia spp, and Eimeria spp while showing a lower likelihood of F. hepatica infection than those older than four years (p < 0.05). The initial study conducted in the rural area of the Chota district revealed a high frequency of infections by various internal parasites in creole cattle, but with low parasite loads. These findings suggest further research on whether parasite loads impact animal health or production.
由于获得专业服务或国家项目的机会有限,农村地区饲养的动物往往缺乏足够的医疗保健和营养。广泛的放牧方式使这种情况更加恶化,因为这会使牛接触到寄生虫。本研究旨在通过检查秘鲁卡哈马卡省乔塔区农村海拔3000米以上放牧条件下小规模生产者饲养的克里奥尔牛的粪便虫卵和卵囊,来鉴定蠕虫和球虫。分析了385头牛的粪便样本,其中357头(92.73 ± 2.59%)的寄生虫卵和卵囊检测呈阳性。在农场层面,所有农场(37/37)的牛都感染了寄生虫。自然沉淀法鉴定出肝片吸虫卵(19.48 ± 3.96%)。使用饱和糖溶液进行漂浮浓缩法显示,类圆线虫样线虫(SLN)卵(81.56 ± 3.87%)、毛细属虫卵(1.82 ± 1.33%)、毛首属虫卵(2.86 ± 1.66%)、犊弓首蛔虫卵(2.08 ± 1.42%)、莫尼茨绦虫卵(8.05 ± 2.72%)以及艾美耳属卵囊(55.58 ± 4.96%)。SLN和艾美耳属的寄生虫负荷与性别有关,并且与年龄呈中度负相关(p < 0.05)。与雄性相比,雌性感染SLN的优势比(OR)为0.393 [95%置信区间0.187 - 0.825],感染艾美耳属的OR为0.298 [95%置信区间0.177 - 0.503],感染肝片吸虫的OR为2.206 [95%置信区间1.111 - 4.382](p < 0.05)。与四岁以上的牛相比,年幼的牛感染SLN、莫尼茨绦虫属和艾美耳属的可能性更高,而感染肝片吸虫的可能性更低(p < 0.05)。在乔塔区农村进行的初步研究表明,克里奥尔牛感染各种体内寄生虫的频率很高,但寄生虫负荷较低。这些发现表明,需要进一步研究寄生虫负荷是否会影响动物健康或生产。