Uticaj zračenja semena nerastova crvenim delom svetlosnog spektra na veličinu legla krmača

Abstract

In this presentation, the influence of irradiation of boar semen by red light spectrum immediately before insemination on the litter size in sows will be presented. LED lamps that emit a red color spectrum with a wavelength of 620-630 nm built into the air conditioning box were used. A mode of operation was: 10 minutes of light, 10 minutes of rest and 10 minutes of additional irradiation. Inseminations were carried out in the period from April to May 2021, on a farm of 1,200 breeding sows. Control group consisted of 174 sows with an average of 4.36 parities, and experimental group of 64 sows, with a parity of 4.14. Gillts were excluded from the statistics. In the experimental group, a higher number of live-born piglets was observed by 0.87 (14.05 vs. 13.17) but with no statistical significance, while in the same group, a significantly lower number of avital and stillborn piglets was also observed (3.55 vs. 4.68; p <0.05 ). The number of mummified piglets in the litters was identical (0.45 piglets) for both groups. Semen irradiation with red light rays immediately before insemination had a positive effect on the number of live-born piglets in the litter, but only in numerical value, while a clear statistical difference was observed in terms of vitality of piglets in litters. This trial is in progress and a significantly larger number of farrowings and a clearer insight into the efficiency of such semen treatment on the fertility is expected.