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2008 | 64 | 12 |
Tytuł artykułu

Effect of group composition on agonistic behavior and performance of newly mixed weaned pigs

Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The objective of the present study was to compare the differences and regularities in social behavior of newly mixed piglets under the conditions of large-scale commercial pig production. Three methods of grouping piglets at weaning (31-34d) into a 12-member weaned pool were studied: 6 pigs from 2 litters (6 × 2); 4 pigs from 3 litters (4 × 3); 3 pigs from 4 litters (3 × 4). Each method had three replicates and the weaned piglet body weight ranged from 7.4 up to 9.8 kg. Agonistic behavior was recorded over three observation periods: 0-1.5 h immediately after mixing; 1 h, 4-5 h later the same afternoon; 5 days later for 1 h. Both contact (head thrusting, biting and pushing) and non-contact (chasing, threatening and displacement) agonistic behavior were recorded. Contact behaviors made the most significant contribution to obtain a new dominance status in the social hierarchy and decreased significantly in frequency over time. Subsequently, the rate of non-contact behavior also declined. During the first observation period covering the crucial time for establishing dominance hierarchy, structure 4 × 3 had significantly less head thrust than 6 × 2 or 3 × 4. Generally, 4 × 3 showed a lower rate of contact behavior compared to the other two groups as well as less non-contact behavior than 3 × 4, but it was similar to 6 × 2. It appears that the 4 × 3 structure may cause less physical encounters than the other two groupings.
Słowa kluczowe
Wydawca
-
Rocznik
Tom
64
Numer
12
Opis fizyczny
p.1389-1392,fig.,ref.
Twórcy
autor
  • Department of Environment, University of Veterinary Medicine, Komenskeho 73, 041 81 Kosice, Slovak Republic
autor
autor
autor
autor
Bibliografia
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  • 13.Novák P., Kubíček K., Odehnal J., Beňová K.: Tvorba prostredí chovu a řesení problému vlivu chovu zvířat na životní prostředí v České republice. In Sborník referátu Tvorba mikroklímy v ustajňovacích objektoch a vplyv chovu zvierat na životné prostredie. VÚŽV Nitra 2002, 45-59.
  • 14.Otten W., Puppe B., Kanitz E., Schon P. C., Stabenow B.: Effects of dominance and familiarity on behavior and plasma stress hormones in growing pigs during social confrontation. Zntbl. Vet. Med. A 1999, 46, 277-292.
  • 15.Otten W., Puppe B., Kanitz E., Schon P. C., Stabenow B.: Physiological and behavioral effects of different success during social confrontation in pigs with prior dominance experience. Physiol. Behav. 2002, 75, 127-133.
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Bibliografia
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