The results of the autopsy of pigs from groups of growing and fattening in two pig farms of industrial type

The aim of the work is to determine and compare the structure of diseases of piglets of rearing and fattening groups that caused the death on two pig farms with a complete production cycle (from farrowing to fattening). The object and material of the study were piglets from two industrial pig farms located in the North-Western region of Russia. The number of animals studied was 96 from the rearing group and 82 from the fattening group on farm No. 1, and 108 and 91 respectively on farm No. 2, where the authors performed an autopsy together with farm specialists in 2017-2018. If the diagnosis took into account the findings of the autopsy, bacteriological tests and PCR. Bacteriological study on streptococcosis and Staphylococcus, study of pCr for circovirus, mycoplasmosis, actinobacillus pleuropneumonia, influenza, reproductive and respiratory syndrome swine (PRRS) were conducted. As a result of research on both farms the identical structure of the diseases which were the cause of death is defined, that is, the same diseases are diagnosed. Most of the indicators on the incidence of diseases at the opening of pigs in the groups of rearing and fattening on both farms are similar: streptococcosis, staphylococcosis, colibac-teriosis, bronchopneumonia, pleurisy, peritonitis, gastric ulcer. Significantly differ in the frequency of mycotoxicosis-hypovitaminosis E (6.3% and 14.8% in the rearing groups and 6.1% and 17.6% in the fattening groups), as well as intestinal inversion (7.2% and 1.9% in the rearing groups and 19.5% and 4.4% in the fattening groups). The large difference in the frequency of mycotoxicosis-hypovitaminosis E on farms should be explained by the addition of mycotoxin sorbents to pig feed on one farm and the absence of such or similar additives on another farm. The difference in the frequency of occurrence of intestinal inversion is due to the high starch content in the diet of feeding pigs on one of the farms, causing excessive gas formation, which is considered the main cause of flatulence and intestinal inversion in pigs.

поросята, доращивание, откорм, болезни, вскрытие, патологоанатомические изменения, pigs, growing, fattening, diseases, autopsy, pathological changes

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