Vliv odberu krve na plazmaticke katecholaminy u prasat ruzne hmotnosti.
1995
Matuska M.
The effect of blood collection via puncture was studied in relation to concentrations of plasma catecholamines in male castrates of the Slovak White Pork breed at the average weight of animals 20 kg (n=5), 40 kg (n=5) and 100 kg (n=10-11), i.e. at the age of 2, 4 and 8 months, resp., which were kept in optimum conditions of individual housing in an experimental pigsty and in conditions of group housing on a large farm (n=23 for each weight category). Fixation and puncture (3 minutes) provoked a stress reaction in individually housed pigs of all weight categories that is of various intensity for noradrenaline in relation to age. The most intensive and the longest reaction of noradrenaline concentration was observed in 40 kg pigs. In the case of adrenaline its concentration seems to increase with growing age (weight). Dopamine was determined only in 100 kg pigs. The same load in the group housing pigs provokes a still stronger stress reaction in all weight categories, particularly in young pigs, in comparison with the individually housed pigs. In 100 kg pigs a decrease in adrenaline concentration (P<=0.05) was recorded in comparison with individual housing. This fact demonstrates a certain psychic load of an individually housed animal since pigs are gregarious animals. The results demonstrate that blood collection via puncture provokes in pigs, and particularly in young pigs, a relatively short but strong sympatoadrenal reaction that is obvious mainly in pigs on the large farm.
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