Gastrointestinal parasitic worm burdens and efficacy of deworming practices in growing beef cattle grazing California pastures.

• Tác giả: Josh S Davy, Larry C Forero, Gabriele U Maier, Laura Snell, Jeffery Stackhouse, Phillip Torcal, Grace Woodmansee
• Ngôn ngữ: eng
• Ký hiệu phân loại: 305.568 +Alienated and excluded classes
• Thông tin xuất bản: England : Translational animal science , 2025
• Bộ sưu tập: NCBI
• ID: 51425

Tóm tắt

Treatment for enteric parasites is a common practice in beef cattle, yet little data is known about the prevalence of nematode and trematode parasite infections in beef cattle in the western United States. Likewise, the data on the efficacy of deworming practices and the presence of anthelmintic resistance (AR) of these parasites in this region is sparse. The current study collected evidence for the presence of nematode and trematode parasites in 18 herds of young beef cattle grazing either dryland or irrigated pasture in northern California as well as on efficacy and evidence of AR in a subgroup of herds. We found variable levels of fecal egg counts (FEC) ranging from 6 to 322 for the arithmetic mean eggs per gram (EPG) in the tested cattle groups. There was no difference in the number of EPG between herds grazing dryland or irrigated pasture (