Conception of the 'feed’s chain' for porcine circovirus-bacterial infections in piggery

Abstract

The obtained experimental-analytical data indicate a significant risk of occurrence of circovirus-associated syndrome complexes proliferative necrotic pneumonia and a complex of respiratory diseases of pigs (PNP and PRDC) from the presence of Pasteurella and Pasteurellacea bacteria in barley grain (OR = 3.48; 2.21 < OR < 5.50; p ≤ 0.01 at n = 633) and the critical importance of these bacteria for the clinical manifestation of these syndromes in pig farms of Ukraine, which are seropositive both for PCV-2 and AD (OR = 35.45; 18.12 < OR < 69.35; p ≤ 0.001 at n = 433). Thus, barley grain grown on forage lands “fertilized” with pig manure is a factor in the transmission of at least pasteurellae in the epizootic chains of PNP and PRDC, and thus form a “feed chain” of PCV-2. Prospects for further development of the concept of the food chain of circovirus-associated infections in pig breeding are discussed