Published in Scientific Works. C Series. Veterinary Medicine, Vol. LVIII ISSUE 3
Written by Molnar Maria Eugenia, Falcă Constantin, Petruse Cristina
The experiment was conducted on 144 hens, for the duration of a production cycle. The biological material used in the experiment was divided into 4 experimental groups. In the experiment we used a structure of mixed supplemented fodder in three experimental variants with selenium, zinc and magnesium. The supplementation of the feed, designed for hybrid hens in the upward phase of the egg laying curve with selenium, zinc and magnesium led to the reduction in the total consumption of feed with additional variants compared with the control group. Feed supplementation with selenium determined the insignificant increase in the egg production, compared to the other variants tested in the upward phase, but a significant increase in the steady and downward phase of the egg laying curve. Zinc supplementation has also led to an insignificant increase in egg production in the upward and downward phases versus the control group. Magnesium supplementation led to the worst results on egg production and their average weight.
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