|
|
Vliv obohaceného prostředí na chování prasat v intenzivním a extenzivním způsobu chovu
ULMONOVÁ, Karolína
The diploma thesis followed the Bachelor's thesis Ulmonová (2018). The work was focused on the elimination of aggressive behavior in extensive and intensive pig breeding. In both establishments, the toy was placed in pre-fattening and pig fattening. It was assumed that reducing aggressive behavior would reduce pig injuries (bitten tails, ears, navel). To eliminate aggressive behavior, a toy (wooden logs, chains) was used, which was always lowered into the pens at a certain time and pulled out again at a certain time. 2 groups were created in both companies (control / experimental). In intensive breeding after 15 pieces, later after 13 pieces. In extensive breeding of 10 pieces. During the pre-fattening 1 ethogram was created and during the fattening another 3 ethograms were created. The basic categories of behavior (feed intake, rest, movement, standing) and frequency categories of behavior (play / aggressive behavior) were evaluated in the ethograms. Groups in extensive breeding spent more time on feeding, compared to groups in intensive breeding. The animals from the control groups spent more time resting. The experimental groups spent more time moving. The movement was associated with the presence of a toy in the pen. Standing on both farms fluctuated considerably, with all observations. The frequency of aggressive behavior was highest in the control group in intensive breeding and increased over time. In the experimental group in intensive breeding, there was a reduction in aggressive behavior, but not complete elimination. The frequency of aggressive behavior in extensive breeding was negligible. The highest frequency of the game was in the experimental group in intensive breeding, the pigs played with the toy the most. The experimental group had the highest frequency of playing with equipment (they had straw available). Cannibalism appeared only in the control group in intensive breeding, in the middle of fattening. In this group, the necessary slaughter took place at the end of the fattening, due to the biting of the tail of one pig.
|
|
|
Využití obohaceného prostředí při výkrmu prasat
ULMONOVÁ, Karolína
This bachelor thesis deals with the issue of cannibalism in the fattening of pigs. This problem has been eliminated through the enriched space where toys were placed in the pig pen. Ethological observations were performed three times during fattening, the basic categories of behaviour (rest, eating, standing, movement) and frequency categories of behaviour (play, aggressive behaviour) were observed. Changes in the basic categories of behaviour began to appear in the middle of fattening. Pigs from the experimental group rested and stood for longer period. On the other hand, pigs from the control group were moving more. From the beginning of the fattening there was a big difference between the game and the aggressive behaviour. The pigs in the control group gradually ceased to play the game and aggressive behaviour was increasing. Contrary to control group the frequency of play increased during fattening and the aggressive behaviour gradually decreased in the experimental group. However, there was no complete elimination of aggressive behaviour. Cannibalism in the form of barked tails appeared only in the control group at the end of fattening.
|
guest ::
RSS feed.