Feed consumption is one of the most essential parameters of the poultry production, because
the costs of nutrition often make over 60% of the total cost. Today’s light line
hybrids, selected for the production of eggs for consumption, realize exceptional conversion of
food to egg mass. From an economic point of view, the information about feed
consumption per product unit, i.e. produced egg, is more interesting in relation to
the daily consumption of food per laying hen, which is not the best indicator of economic
production. Since it has been established in the area of the Balkans, that commercial flocks in
the production of the eggs are held to the end of the 72ⁿᵈ week of age as a final instance
in the production, the aim of this paper is to examine what is going on with feed
consumption per hen, and produced egg, before, as well as, after established 72ⁿᵈ week of
age, up until the end of the 79ᵗʰ week of age of hen hybrids Lohmann Brown, where the production
period lasted 61 weeks, which is 427 days. The examinations were performed on the
light line hybrid Lohmann Brown by conducting appropriate experiment on the laying
hens’ farm “Agrovet” in Foca municipality, Bosnia and Herzegovina – Entity of Republic of
Srpska. During the research, the following basic indicators were tested: food consumption
(daily per laying hen and per produced egg) by weeks and for the entire production
cycle. We also determined the coefficients of phenotype correlation between the age
and daily feed consumption per laying hen, or per produced egg. By calculating the
phenotypic correlation between the age of laying hens, and the daily feed consumption per
laying hen and produced egg, it can be concluded that, in the present case, it is justified
to use laying hen in the production of eggs for 61 weeks. Viewed as a whole, it can be
concluded that the analyzed commercial flock of light line hybrids Lohmann Brown, in
most tracked production indicators has achieved satisfactory results which values are
mostly within the limits of the values to the technological standards predicted by
selector.
