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ŠUMARSKI LIST 5-6/2019 str. 16     <-- 16 -->        PDF

trophies treated according to the CIC proposals, but it must be pointed out that, because the lines of equalization are not parallel, the difference decreases with the increase in the trophy mass (Figure 10).
From Figure 11 it is clear that coefficient 0.23 actually depends on the density. Using the coefficient 0.23 raises the trophy value in the case of trophies with higher mass and lower volume (denser trophies). For porous trophies the real coefficient should be much greater. Therefore it is understandable why the use of coefficient 0.23 for shallow cut or correctly cut skulls leads to a lower trophy values. That why it “open” new additional study.
DISCUSSION
RASPRAVA
Deductions for incomplete skull cutting are often the subject of debate between hunters. Unfortunately, of the studies dealing with this issue, the only available is one done by Metz (1996). According to his research, the loss of antler mass caused by the shallow cut is from 41 to 50 g, while the loss of mass in correctly cut trophies is from 82 to 102 g, which is similar to this study (although Metz did not undertake a statistical analysis, but the sample was also from lowland hunting grounds). However, the cut has many advantages, which are almost exclusively aesthetic or practical in nature, for example precisely sawn-off antlers sit better on the plate without leaving any gaps. Further, for antlers of low value (short and/or thin beams, with short tines or without them) the entire skull should not be retained because the mass of the antlers would not be in line with the mass of the skull. In contrast, extremely strong antlers (long and/or solid beams with long tines, well-developed pearls and burr) are not in harmony with the skull if cut using the prescribed guidelines, because in that case that part of the skull is small and the antlers are too large. Finally, it is easier to clean the brain cavity on sawn-off antlers, so the trophy does not have an unpleasant odour.
According to Krapinec et al. (2014), in comparison with capital bucks from most countries, Croatian roe deer with the same trophy value have a statistically significantly smaller trophy mass, whilst in comparison with roe deer from Bosnia and Herzegovina, bucks from Croatia have a significantly greater antler mass. Apart from mass, the volume of the antlers also grows with the increase in trophy value, and as in the case of the antler mass, roe deer found in Croatia with the same trophy value have statistically significantly smaller antler volume in comparison with roe deer found in Austria, Hungary and Germany. Here, in all four cases there is interaction so it may be said that the significant difference in the antler volume arises above a trophy value of 92.17 CIC points (if the volumes of the antlers of Croatian roe deer are compared with the volumes of the antlers of roe deer from Hungary) or after 112.35 CIC points (if the volumes of the antlers of roe deer are compared with the volumes of antlers of roe deer from Austria). As well as the statistically significantly lower mass and volume, Croatian bucks, in comparison with roe deer from Bulgaria, Czech Republic, Hungary, Poland, Romania, Serbia, Sweden, Switzerland and the United Kingdom, also have significantly lower antler density (Krapinec et al. 2014). Roe deer from Croatia only have denser antlers than roe deer from Bosnia and Herzegovina. In the other cases no statistically significant differences were found in the indicators. Apart from what was found in relation to most countries, roe deer trophies found in Croatia have significantly lower mass, a significantly small proportion of antler mass in Croatian roe deer in the total trophy value was found in comparison with those from Hungary, Romania, Serbia, Switzerland and the United Kingdom, whilst roe deer from Croatia have a significantly greater proportion of antler mass in the total trophy value than those in Bosnia and Herzegovina (Krapinec et al. 2014). However, if the proportion of the volume in the total trophy value is considered, it may be noticed that roe deer from Croatia have a significantly higher proportion of volume in the total trophy value than those from Slovenia and Switzerland, and less than the roe deer from Bosnia and Herzegovina, Poland, Romania, Slovakia and the United Kingdom (Krapinec et al. 2014). Therefore, the proportion of volume in the total trophy value of our roe deer is still lower than the proportion in roe deer from most of the countries compared. Finally, the proportion of mass and volume together in the total trophy value is significantly greater in roe deer from Germany, Poland and Slovakia. This would mean that with the same trophy value bucks from Croatia have antlers of lower mass and volume (porous antlers, thinner beams and a less well developed burr) but with longer beams than those from these countries, because the difference in mass and volume must be compensated for by the other elements of measurement, of which there are few in roe deer. Therefore it is no wonder that one of the best trophy evaluators in this country, Lazar Raić, in 1960’s tried to implement the 0.25 as the coefficient of transformation.
Stubbe (1977) established that the specific weight of roe deer antlers shows much greater deviation than the specific weight of red deer and fallow deer antlers. According to Stubbe (1977) bucks have undoubtedly heavier antlers than red deer and fallow deer, but no difference was found in the specific weight of the antlers of red deer and Siberian roe deer (Capreolus capreolus pygargus). However, it is true that the density of roe deer antlers shows greater variability in comparison to the other two species from the deer family. It is still unknown whether the differences in the specific weight of roe deer antlers are the result of genetic or environmental factors. Regarding the correlation between the