A mathematical deterministic model is used to describe the spread of paratuberculosis within dairy cattle during a 9 weeks period. The number of susceptible and exposed calves, and that of susceptible and infective cows are calculated over time. Either a small ((A) 190 animals) or a large ((B) 570 animals) dairy cattle is taken into consideration, assuming the initial presence of one infective cow. After 9 weeks, one can infer that: (A) there will be about 183 animals left in cattle (A), of which 25 cows and 26 calves will be infected, and 76 cows and 56 calves still susceptible, (B) there will be about 551 animals in cattle (B), of which 301 cows and 245 calves will be infected and only 2 cows and 3 calves still susceptible
VALENTE, C., NUCCI, M.C., Cuteri V., MARENZONI, M.L. (2002). Estimating the spread of paratuberculosis within dairy cattle using a deterministic mathematical model.
Estimating the spread of paratuberculosis within dairy cattle using a deterministic mathematical model
NUCCI, Maria Clara;
2002
Abstract
A mathematical deterministic model is used to describe the spread of paratuberculosis within dairy cattle during a 9 weeks period. The number of susceptible and exposed calves, and that of susceptible and infective cows are calculated over time. Either a small ((A) 190 animals) or a large ((B) 570 animals) dairy cattle is taken into consideration, assuming the initial presence of one infective cow. After 9 weeks, one can infer that: (A) there will be about 183 animals left in cattle (A), of which 25 cows and 26 calves will be infected, and 76 cows and 56 calves still susceptible, (B) there will be about 551 animals in cattle (B), of which 301 cows and 245 calves will be infected and only 2 cows and 3 calves still susceptibleI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
