The FNAW inflates their estimate of sheep populations, stating that there are 8,560 California bighorns.
Small ruminant lentivirus (SRLV), also known as maedi visna virus or ovine progressive pneumonia virus, is a common pathogen in the US, where an estimated 24% of sheep are seropositive (Cutlip et al. 1992).
Sheep could be an important source of T. gondii infection in humans, since we estimate that between25%and43%43% of sheep in the district were seropositive.
This might impact on the estimates of the percent of sheep caught by severity and time and number lame before inspection, but the associations between low estimated prevalence of lameness and rapid treatment of the first mildly lame sheep in the group is likely to remain.
It is estimated there are thousands of sheep and cattle yet to be found.
Dagginess and parasite resistance, as measured by faecal egg counts of Strongyle (FEC) and Nematodirus egg count (NEM), have been shown to be moderately heritable traits [ 4], with estimates in New Zealand sheep of 0.37 and 0.34 for dag score at three and eight months (DAG3, DAG8) and between 0.18 and 0.21 for FEC/NEM traits [ 5].
The sheep and goat population for each adakars was estimated by dividing the population of sheep and goats in a sub location with number of adakars estimated in that sub-location.
The population of sheep is estimated at 132.5 million head [ 2].
In the absence of individual animal records, the age of sheep can be estimated by examination of dentition, which is an imprecise science [ 69].
Goats had a significantly higher apparent PPR sero-positivity of 40%[955% CI: 36%, 44%] compared to that of sheep which was estimated to be 32%[955% CI: 27%, 36%] (P = 0.008).
Overall, the proportion of sheep to goats was estimated at 6 1.
