Effects of laser irradiation on hatchability and blood morphological composition of chicken embryos

УДК 636.5.083.39

The effect of laser radiation exposure time on the blood morphological composition and the hatchability of “the White Hubbard” cross chickens embryos has been studied. The incubation eggs have been divided into 5 groups before incubation and exposed to laser irradiation for 20, 30, 40, 50 and 60 seconds. Blood for study has been taken on the 20th day of embryo development by dissecting large vessels of the neck. Counting of the blood cells has been carried out by conventional methods. As a result of laser irradiation an increase in the total number of erythrocytes and leukocytes has been established. There have been changes in the leucogram: an increase in the number of pseudo-eosinophils under 20, 40 and 50 seconds of exposure, a more than 2-fold decrease in the number of monocytes under 40 and 60 seconds of laser exposure. All changes in the blood morphological composition have been within the limits of the physiological norm for this species of animals. Laser irradiation for 20 and 30 seconds does not have a significant effect on the results of incubation, when exposed to 40 and 60 seconds the hatchability and hatchability out are significantly reduced, embryonic mortality increases. The best results of hatchability incubation have been observed with laser irradiation for 50 seconds, where hatchability has increased by 10%.

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