Hatchability performances of hen eggs under the influence of magnetic field

Abstract

Different methods of egg’s incubation improving are used in hatching technology nowadays. To find out what is the most efficient method of eggs improving, it is necessary to held experiments in this branch. The eggs (n = 150) were exposed to magnetic field generated by apparatus UEM-3. For the experiments there were used four systems of electromagnetic field: permanent, split, impulsive 8 Hz, impulsive 16Hz, for a period of 5 and 10 minutes for each system. The highest percentage of first quality chickens was received in experimental group 8 (93.40%), where eggs were exposed to the action of magnetic field in system impulsive 16Hz, for a period of 10 minutes. The highest number of chickens had been received in experimental group 3 and it was 129.0 chickens, the eggs were exposed to the action of magnetic field in system split for a period of 5 minutes, while in control group the number of chickens was – 127.0.The lowest value of embryonic death had been found in experimental group 8 (3.2%), where eggs were exposed to magnetic field in system impulsive 16Hz, for a period of 10 minutes, in the control group this index had a value of 7.78%, as well in the experimental group 5 it reached 8.3%, where eggs were exposed to the magnetic field in system impulsive 8Hz for a period of 5 min. The highest values of hatching indices calculated in relation with fertilized eggs were found in experimental groups 8 – 96.8%, and 2 – 95.6%. The negative effect of magnetic field was found in group 5 where the eggs were exposed in system impulsive 8Hz for a period of 5 minutes. The indices in this group had lower values.