Joint International Conference on Long-term Experiments ...

weight and weight gain. These parameters were determined individually in the trial
group and were compared with the parameters determined in the control group.
Statistical evaluations were carried out with the program
RESULTS AND DISCUSSION
In evaluating the average feed consumption for the starter period (HYD-01/1) for one
broiler chicken per day (table 3) feed consumption in the control group was 24.27 g and
in the experimental groups the observed values were 23.55 g for group T1 and 23.85 g
for group T2. The relative values were 2.97 % less in T1 and 1.73 % less in T2 less
compared to the control group. For the prefattening period (HYD-01/2) feed
consumption in the control group was highest (67.90 g) in comparison with T1 and T2,
which resulted in smaller values to be 6.42 % and 4.14 % less. The same parameters in
the groups were evaluated also for the fattening period (HYD-02) and finishing period
(HYD-03). For the total feed consumption for one broiler chicken per day, feed
consumption in the control group was 101.39 g, 94.95 g in the first trial group and 96.92
g in the second trial group. Average feed consumption per kg live weight showed the
same tendency within the considered groups as the other parameters. Values for average
feed conversion were observed to be highest in the control group (1.906 kg), while in
the experimental groups values were lower, in the trial groups T1 (1.840 kg) and T2
(1.873 kg) during the whole experiment.
Table 2: Analytical analysis and nutritional value of FM
FN group CP MEN Ca P
HYD-01/1
HYD-01/2
HYD-02
HYD-03
C 233.4 12.9 13.7 7.8
T1 217.9 12.8 10.2 5.2
T2 206.2 12.8 10.1 5.2
C 227.9 12.9 12.5 7.1
T1 209.1 12.8 8.9 4.9
T2 198.4 12.8 8.0 4.7
C 207.0 12.8 9.8 7.6
T1 192.6 13.0 8.4 5.3
T2 186.9 13.0 7.7 5.2
C 191.3 13.1 10.2 7.1
T1 187.9 13.0 7.5 5.1
T2 178.3 13.1 7.7 6.4
These data of decreasing feed consumption per chicken and day and also per live weight
were confirmed by Gezen et al. (2002), and by Agrar Production and Consulting (2005,
2003) in their experiments with applications of zeolit or APC preparations as additives
to feed mixtures.
The average live weight (table 4) of broiler chickens was compared with the
control group in the individual periods starter, prefattening, fattening and finishing
(0.155, 0.494, 1.001 and 1.825 kg). In the experimental groups a decrease of live weight
was observed only in the first two periods (starter HYD-01/1 and prefattening HYD-
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