| Popis: |
There is a lack of information about the epidemiology of gastrointestinal nematode (GIN) infections on dairy goats. The objective of this study was to evaluate factors associated with the prevalence of GIN infection in mixed-breeds dairy goat grazing on semi-arid rangelands of northeastern Mexico. Mixed-breed dairy goats (n = 668) including Boer, Nubian, Alpine, Saanen and Toggenburg in 18 flocks were used. The goats were weighted and sampled of faeces and blood. The egg counts per gram of faeces (EPG) and the percentage of packed cell volume (PCV) was determined. Age, body condition score (BCS), and FAMACHA were estimated. Environmental temperature, annual rainfall, and altitude were the independent variables. The association between EPG, PCV, BCS, and FAMACHA was determined. Temperature, rainfall, altitude, and live weight affected the EPG of GIN excretion (P |
