2.1| CLINICAL HISTORY AND EPIDEMIOLOGICAL DATA
The outbreak occurred in a dairy goat farm located in Rio de Janeiro - Brazil, with 650 Saanen goats raised under intensive husbandry management. In late spring (November 2017), in the mid-kidding season, increased mortality in suckling kid goats among one and three months old was reported by the farmer. The history was a sudden acute condition that involved abdominal bloating, dullness, and death within 6 to 12 hours. Likewise, 20.0% (11/55) of the kid goats born so far had died with the same clinical signs. At the first clinical examination, sick kid goats showed a distended abdomen, a fair amount of content in the abomasum by ballottement, right and left paralombar fossa distended by the presence of gas in the percussion, dullness, anorexia, and dehydration (Figure 1 A and B). From seven animals that died with clinical signs of abomasal bloat and other four that died without such symptoms (classified as control group), biological materials were collected for pathological, microbiological, and molecular diagnosis, as will be described in sequence.
Likewise, an epidemiological survey was carried out in order to verify the possible associated factors related to the disorder. A descriptive observational study represented by descriptive and intervention phases were adopted to develop control and prevention measures (Stevenson et al., 2017). Morbidity, lethality and mortality rates were also calculated from dairy farm data based on the 45 days subsequent to the first technical visit and before management corrective measures (At the second visit time). In addition, frequencies of deaths due to acute or relapses clinical features, as well as frequencies of sick animals and relapses without death were assessed. Relapses were considered as two or more days without the previous feature of abomasal bloat.