Principais afecções podais secundárias a laminite e alterações hepáticas responsáveis por condenações em bovinos abatidos no Mato Grosso

Abstract

In the beef production chain, partial and or total condemnation of organs and carcasses are responsible for significant economic losses. Hepatic and podal alterations are an important part of this scenario. The objective was to perform a retrospective study in a slaughtered in Mato Grosso, on the occurrence of hepatic alterations and theis condemnation, with a focus on abscesses; and tomographic and radiographic assessments of the main alterations secondary to laminitis found in the hoofs of cattle slaughtered in the state of Mato Grosso. To this end, the count of the main liver alterations was extracted from reports of condemnation and number of slaughtered animals, during the years of 2015, 2016, 2017 and 2018 in a refrigerator in the state of Mato Grosso. Out of 962,536 animals which were evaluated in the period studied from January 2015 to November 2018, the frequency of livers condemnation was 5.50% (53,010). The occurrences of hepatic abscesses against hepatic condemnation were 33, 34, 37 and 31%, in the years 2015, 2016, 2017 and 2018, respectively, with an average of 4 years of 33.75%. The incidence of hepatic abscess in the total number of slaughtered animals was 0.6, 0.5, 0.9 and 1.1%, in the period of 2015, 2016, 2017 and 2018, respectively, with the mean incidence of 4 years of 0.75%. In relation to the foot diseases, tomographic and radiographic assessments of 20 distal extremities of the locomotor limbs of bovine animals were performed, 5 without podal diseases, 5 with bead erosion, 5 with double soles and 5 with a corkscrew. There was statistical difference in the tomographic examination for the thickness of the sole between the control and double sole groups and for angle between the length of the wall and the sole between the groups erosion of bead and corkscrew and in the radiographic examination, for thickness of the hull wall Between the control and corkscrew groups and between double soles and corkscrew.