Дослідження дії над оцтової кислоти на структурні показники та рівень газопроникності шкаралупи інкубаційних яєць курей

Results of the experimental investigation of the effect of peracetic acid on the bioceramic structures of the hatching hen’s eggs are given in the study. Hatching eggs (15-20 weeks of oviposition), obtained from hens, kept according with regulations of maintenance and feeding, were used in the study. Eggs were worked up by spraying of working solution of peracetic acid, concentration (1-10 %) for 20-30 min. before incubation. Degree of penetration of shell᾿s bioceramic structures was studied according with model gas mixture, that was identical to atmospheric air, by mass spectrometry (gas mass spectrometer "МХ 7304А", open joint stock company "SELMI", Sumy, Ukraine.) Electron microscopic study was made by scanning electron microscope РЕММА-102 (SELMI, Sumy, Ukraine); in digital data processing to determine the quantity of shell microdefects of digital picture per unit of area (Y; the quantity of channels, %), used the program Visilog 6.11 (Noesis, Belgium). It is established that the increase of level of shell's bioceramic structure gas-permeability positively correlate with the number of microdefects in calcite structures, that in return results in increase of hatchability. The optimal values of peracetic acid are 4-6 %. During research of peracetic acid action for hatching eggs, got from hens affected by viral infection (the modal was a hen by cross DOMINANT BROWN D 102 affected by colibacteriosis), it was set that peracetic acid used in less concentration bring to declination of hatchability indexes, that explained by extremely low barrier properties of biocrystalline layer. In this situation less concentration of peracetic acid, that produces in others groups of hens pronounced effect of hormesis produce excessive increase gas-permeability with subsequent metabolism embryos and a decrease in the quality of the final effect indicator hatchability to 45,6 and 29,3 percent respectively.