Therefore, even before transition, 90% of the sheep were privately owned even if State or collective farms (Agro Kombinat) had large flocks ranging between 1,000 and 25,000 sheep (MAFWE 2003).
The sheep industry in Spain was an instance of migratory flock management, with large homogenous flocks ranging over the entire country.
A cross-sectional serological study in Queensland, Australia, found within-flock seroprevalences in infected sheep flocks ranging from 1 – 42% and in infected goat flocks ranging from 5 – 16% [ 12].
Sampling fractions within flocks ranged from 0.059 to 0.135 (mean: 0.079; median: 0.075).
Individual flocks ranged in size from 604 to 21,772 broilers (median 6,275, mean 7,366).
The age of positive turkey flocks ranged from 1 to 19 weeks-old, with the majority 3-7 weeks old.
Prevalences of PPRV infection varied between flocks, ranging from 0.87% to 82.60%; however, these figures may not be accurate because of the small sample sizes.
The prevalence of Campylobacter in broiler chicken flocks ranges from 3to90%0% depending on their location [ 6, 7] and the isolation rates within positive flocks at slaughter are high (around 80%) [ 8– 10].
In 2011, the flock prevalence rate (at least 1 seropositive ram per flock) ranged from 5.5%% to more than 50%% according to the area.
The number of whitefish genotyped per flock ranged from 13 to 35 (Tables 1, 2), depending largely on the number of constituent species.
