TY - JOUR KW - pig KW - group composition KW - social rank KW - aggressive interaction AU - M Fels AU - N Kemper AB - The aim of this study was to analyse the fighting activity of weaned piglets after mixing, particularly focused on the influence of origin litter on the rank positions achieved by individuals within a group. We formed 16 groups of twelve with either six piglets from two different litters each (6/2) or four piglets from three different litters each (4/3) balanced by weight and sex. Aggressive behaviour between piglets was analysed continuously for the first 72 h after mixing, and an individual rank index was calculated for each piglet. The total number of aggressive interactions differed significantly between both group compositions with piglets in composition 4/3 having more fights than those in composition 6/2 (27.3 fights vs 12.8 fights per piglet, p lt; 0.05). Piglets fought mainly against non-littermates. High-ranking piglets fought more than middle and low-ranking piglets (24.9 vs 17.3 and 14.5 fights per piglet, p lt; 0.05) and were more often the aggressors (18.6 vs 5.8 and 2.6 attacks, p lt; 0.05). In both group compositions, littermates originating from the same litter within a group obtained similar rank positions. We conclude that the number of fights per piglet was affected by the number of litters combined within a group, probably due to the fact that most fights occurred between non-littermates. The social rank achieved by a piglet within a group was significantly affected by its origin litter with some litters being more dominant than others, when mixing an equal number of piglets from two or three different litters after weaning. BT - Berliner und Münchener Tierärztliche Wochenschrift C1 - {"oldId":100343,"title":"Fighting activity and establishment of a litter-associated dominance order in weaned piglets after mixing","topline":"","teaserText":"Kampfaktivit\u00e4t und Etablierung einer wurfassoziierten Rangordnung bei Absetzferkeln nach der Neugruppierung","content":"

Summary<\/span>
The aim of this study was to analyse the fighting activity of weaned piglets after mixing, particularly focused on the influence of origin litter on the rank positions achieved by individuals within a group. We formed 16 groups of twelve with either six piglets from two different litters each (6\/2) or four piglets from three different litters each (4\/3) balanced by weight and sex. Aggressive behaviour between piglets was analysed continuously for the first 72 h after mixing, and an individual rank index was calculated for each piglet. The total number of aggressive interactions differed significantly between both group compositions with piglets in composition 4\/3 having more fights than those in composition 6\/2 (27.3 fights vs 12.8 fights per piglet, p lt; 0.05). Piglets fought mainly against non-littermates. High-ranking piglets fought more than middle and low-ranking piglets (24.9 vs 17.3 and 14.5 fights per piglet, p lt; 0.05) and were more often the aggressors (18.6 vs 5.8 and 2.6 attacks, p lt; 0.05). In both group compositions, littermates originating from the same litter within a group obtained similar rank positions. We conclude that the number of fights per piglet was affected by the number of litters combined within a group, probably due to the fact that most fights occurred between non-littermates. The social rank achieved by a piglet within a group was significantly affected by its origin litter with some litters being more dominant than others, when mixing an equal number of piglets from two or three different litters after weaning. <\/p>

Keywords<\/span>
pig, group composition, social rank, aggressive interaction<\/p>

Zusammenfassung<\/span>
Ziel dieser Studie war die Analyse der Kampfaktivit\u00e4t von Absetzferkeln nach der Neugruppierung unter besonderer Ber\u00fccksichtigung eines m\u00f6glichen Einflusses des Herkunftswurfes bei der Etablierung individueller Rangpositionen innerhalb einer Gruppe. Hierzu wurden 16 Gruppen mit je zw\u00f6lf Ferkeln gebildet, die sich entweder aus jeweils sechs Ferkeln aus zwei verschiedenen W\u00fcrfen (6\/2) oder aus jeweils vier Ferkeln aus drei verschiedenen W\u00fcrfen (4\/3) zusammensetzten. Die Lebendmassen der Einzeltiere sowie die Geschlechterverteilung waren innerhalb der Gruppen weitestgehend ausgeglichen. W\u00e4hrend der ersten 72 Stunden nach der Neugruppierung wurde kontinuierlich das aggressive Verhalten zwischen den Ferkeln einer Gruppe analysiert und f\u00fcr jedes Einzeltier ein individueller Rangindex berechnet. Die Ge- samtzahl aggressiver Interaktionen unterschied sich signifikant zwischen den beiden Gruppierungsarten, wobei Ferkel der Gruppenkonstellation 4\/3 h\u00e4ufiger k\u00e4mpften als Ferkel der Variante 6\/2 (27,3 vs 12,8 K\u00e4mpfe pro Ferkel, p lt; 0.05). Die Ferkel k\u00e4mpften hierbei vorwiegend gegen Nicht-Wurfgeschwister. Hochrangige Tiere k\u00e4mpften mehr als Tiere auf mittleren und niedrigen Rangpositionen (24.9 vs 17,3 und 14.5 K\u00e4mpfe pro Ferkel, p lt; 0.05) und waren h\u00e4ufiger Angreifer (18,6 vs 5,8 und 2,6 Angriffe, p lt; 0.05). In beiden Gruppenkonstellationen erreichten Wurfgeschwister desselben Wurfes innerhalb einer Gruppe \u00e4hnliche Rangpositionen. Schlussfolgernd lie\u00df sich feststellen, dass die Anzahl der K\u00e4mpfe pro Ferkel durch die Anzahl der innerhalb einer Gruppe kombinierten W\u00fcrfe beeinflusst wurde, h\u00f6chstwahrscheinlich bedingt durch die hohe Anzahl an K\u00e4mpfen zwischen Nicht-Wurfgeschwistern. Der soziale Rang eines Ferkels wurde signifikant durch seinen Herkunftswurf beeinflusst. Ferkel bestimmter W\u00fcrfe zeigten sich hierbei dominanter als andere, wenn eine jeweils gleiche Tierzahl aus zwei oder drei verschiedenen W\u00fcrfen gemischt wurde.<\/p>

Schl\u00fcsselw\u00f6rter<\/span>
Schwein, Gruppierung, sozialer Rang, aggressive Interaktion<\/p>","categories":["Tier\u00e4rztliche Wochenschrift","Abostufe BMTW","Fachartikel"],"fromDate":"Jan 31, 2017 11:00:00 PM","oldUrls":["http:\/\/vetline.de\/fighting-activity-and-establishment-of-a-litter-associated-dominance-order-in-weaned-piglets-after-mixing\/150\/3130\/100343"],"doiLanguage":"englisch","doiProductFormat":"online","doiPublisher":"Schl\u00fctersche Verlagsgesellschaft mbH & Co. KG","doiSerialWorkTitle":"Berliner und M\u00fcnchener Tier\u00e4rztliche Wochenschrift","doiDocumentUri":"http:\/\/www.vetline.de\/fighting-activity-and-establishment-of-a-litter-associated-dominance-order-in-weaned-piglets-after-mixing\/150\/3130\/100343\/","doiSource":"Berliner und M\u00fcnchener Tier\u00e4rztliche Wochenschrift 2017","doiissn":"0005-9366","doiNr":"10.2376\/0005-9366-16007","doiFirstPage":".","doiLastPage":"..","doiTransmitted":true,"doiAuthor":"Fels M, Kemper N","pdf":{"path":"http:\/\/data\/BUM_AOP_16007.pdf","title":"BUM_AOP_16007.pdf","description":"Fighting activity and establishment of a litter-associated dominance order in weaned piglets after mixing "},"authors":[{"firstName":"M","middleName":"","lastName":"Fels"},{"firstName":"N","middleName":"","lastName":"Kemper"}],"contentOptimised":"

Summary<\/strong>
The aim of this study was to analyse the fighting activity of weaned piglets after mixing, particularly focused on the influence of origin litter on the rank positions achieved by individuals within a group. We formed 16 groups of twelve with either six piglets from two different litters each (6\/2) or four piglets from three different litters each (4\/3) balanced by weight and sex. Aggressive behaviour between piglets was analysed continuously for the first 72 h after mixing, and an individual rank index was calculated for each piglet. The total number of aggressive interactions differed significantly between both group compositions with piglets in composition 4\/3 having more fights than those in composition 6\/2 (27.3 fights vs 12.8 fights per piglet, p lt; 0.05). Piglets fought mainly against non-littermates. High-ranking piglets fought more than middle and low-ranking piglets (24.9 vs 17.3 and 14.5 fights per piglet, p lt; 0.05) and were more often the aggressors (18.6 vs 5.8 and 2.6 attacks, p lt; 0.05). In both group compositions, littermates originating from the same litter within a group obtained similar rank positions. We conclude that the number of fights per piglet was affected by the number of litters combined within a group, probably due to the fact that most fights occurred between non-littermates. The social rank achieved by a piglet within a group was significantly affected by its origin litter with some litters being more dominant than others, when mixing an equal number of piglets from two or three different litters after weaning. <\/p>

Keywords:<\/strong>
pig, group composition, social rank, aggressive interaction<\/p>

Zusammenfassung<\/strong>
Ziel dieser Studie war die Analyse der Kampfaktivit\u00e4t von Absetzferkeln nach der Neugruppierung unter besonderer Ber\u00fccksichtigung eines m\u00f6glichen Einflusses des Herkunftswurfes bei der Etablierung individueller Rangpositionen innerhalb einer Gruppe. Hierzu wurden 16 Gruppen mit je zw\u00f6lf Ferkeln gebildet, die sich entweder aus jeweils sechs Ferkeln aus zwei verschiedenen W\u00fcrfen (6\/2) oder aus jeweils vier Ferkeln aus drei verschiedenen W\u00fcrfen (4\/3) zusammensetzten. Die Lebendmassen der Einzeltiere sowie die Geschlechterverteilung waren innerhalb der Gruppen weitestgehend ausgeglichen. W\u00e4hrend der ersten 72 Stunden nach der Neugruppierung wurde kontinuierlich das aggressive Verhalten zwischen den Ferkeln einer Gruppe analysiert und f\u00fcr jedes Einzeltier ein individueller Rangindex berechnet. Die Ge- samtzahl aggressiver Interaktionen unterschied sich signifikant zwischen den beiden Gruppierungsarten, wobei Ferkel der Gruppenkonstellation 4\/3 h\u00e4ufiger k\u00e4mpften als Ferkel der Variante 6\/2 (27,3 vs 12,8 K\u00e4mpfe pro Ferkel, p lt; 0.05). Die Ferkel k\u00e4mpften hierbei vorwiegend gegen Nicht-Wurfgeschwister. Hochrangige Tiere k\u00e4mpften mehr als Tiere auf mittleren und niedrigen Rangpositionen (24.9 vs 17,3 und 14.5 K\u00e4mpfe pro Ferkel, p lt; 0.05) und waren h\u00e4ufiger Angreifer (18,6 vs 5,8 und 2,6 Angriffe, p lt; 0.05). In beiden Gruppenkonstellationen erreichten Wurfgeschwister desselben Wurfes innerhalb einer Gruppe \u00e4hnliche Rangpositionen. Schlussfolgernd lie\u00df sich feststellen, dass die Anzahl der K\u00e4mpfe pro Ferkel durch die Anzahl der innerhalb einer Gruppe kombinierten W\u00fcrfe beeinflusst wurde, h\u00f6chstwahrscheinlich bedingt durch die hohe Anzahl an K\u00e4mpfen zwischen Nicht-Wurfgeschwistern. Der soziale Rang eines Ferkels wurde signifikant durch seinen Herkunftswurf beeinflusst. Ferkel bestimmter W\u00fcrfe zeigten sich hierbei dominanter als andere, wenn eine jeweils gleiche Tierzahl aus zwei oder drei verschiedenen W\u00fcrfen gemischt wurde.<\/p>

Schl\u00fcsselw\u00f6rter:<\/strong>
Schwein, Gruppierung, sozialer Rang, aggressive Interaktion<\/p>","primaryLanguage":"englisch","summary":"The aim of this study was to analyse the fighting activity of weaned piglets after mixing, particularly focused on the influence of origin litter on the rank positions achieved by individuals within a group. We formed 16 groups of twelve with either six piglets from two different litters each (6\/2) or four piglets from three different litters each (4\/3) balanced by weight and sex. Aggressive behaviour between piglets was analysed continuously for the first 72 h after mixing, and an individual rank index was calculated for each piglet. The total number of aggressive interactions differed significantly between both group compositions with piglets in composition 4\/3 having more fights than those in composition 6\/2 (27.3 fights vs 12.8 fights per piglet, p lt; 0.05). Piglets fought mainly against non-littermates. High-ranking piglets fought more than middle and low-ranking piglets (24.9 vs 17.3 and 14.5 fights per piglet, p lt; 0.05) and were more often the aggressors (18.6 vs 5.8 and 2.6 attacks, p lt; 0.05). In both group compositions, littermates originating from the same litter within a group obtained similar rank positions. We conclude that the number of fights per piglet was affected by the number of litters combined within a group, probably due to the fact that most fights occurred between non-littermates. The social rank achieved by a piglet within a group was significantly affected by its origin litter with some litters being more dominant than others, when mixing an equal number of piglets from two or three different litters after weaning. <\/p>

","keywords":["pig","group composition","social rank","aggressive interaction"],"zusammenfassung":"Ziel dieser Studie war die Analyse der Kampfaktivit\u00e4t von Absetzferkeln nach der Neugruppierung unter besonderer Ber\u00fccksichtigung eines m\u00f6glichen Einflusses des Herkunftswurfes bei der Etablierung individueller Rangpositionen innerhalb einer Gruppe. Hierzu wurden 16 Gruppen mit je zw\u00f6lf Ferkeln gebildet, die sich entweder aus jeweils sechs Ferkeln aus zwei verschiedenen W\u00fcrfen (6\/2) oder aus jeweils vier Ferkeln aus drei verschiedenen W\u00fcrfen (4\/3) zusammensetzten. Die Lebendmassen der Einzeltiere sowie die Geschlechterverteilung waren innerhalb der Gruppen weitestgehend ausgeglichen. W\u00e4hrend der ersten 72 Stunden nach der Neugruppierung wurde kontinuierlich das aggressive Verhalten zwischen den Ferkeln einer Gruppe analysiert und f\u00fcr jedes Einzeltier ein individueller Rangindex berechnet. Die Ge- samtzahl aggressiver Interaktionen unterschied sich signifikant zwischen den beiden Gruppierungsarten, wobei Ferkel der Gruppenkonstellation 4\/3 h\u00e4ufiger k\u00e4mpften als Ferkel der Variante 6\/2 (27,3 vs 12,8 K\u00e4mpfe pro Ferkel, p lt; 0.05). Die Ferkel k\u00e4mpften hierbei vorwiegend gegen Nicht-Wurfgeschwister. Hochrangige Tiere k\u00e4mpften mehr als Tiere auf mittleren und niedrigen Rangpositionen (24.9 vs 17,3 und 14.5 K\u00e4mpfe pro Ferkel, p lt; 0.05) und waren h\u00e4ufiger Angreifer (18,6 vs 5,8 und 2,6 Angriffe, p lt; 0.05). In beiden Gruppenkonstellationen erreichten Wurfgeschwister desselben Wurfes innerhalb einer Gruppe \u00e4hnliche Rangpositionen. Schlussfolgernd lie\u00df sich feststellen, dass die Anzahl der K\u00e4mpfe pro Ferkel durch die Anzahl der innerhalb einer Gruppe kombinierten W\u00fcrfe beeinflusst wurde, h\u00f6chstwahrscheinlich bedingt durch die hohe Anzahl an K\u00e4mpfen zwischen Nicht-Wurfgeschwistern. Der soziale Rang eines Ferkels wurde signifikant durch seinen Herkunftswurf beeinflusst. Ferkel bestimmter W\u00fcrfe zeigten sich hierbei dominanter als andere, wenn eine jeweils gleiche Tierzahl aus zwei oder drei verschiedenen W\u00fcrfen gemischt wurde.<\/p>

","schluesselwoerter":["Schwein","Gruppierung","sozialer Rang","aggressive Interaktion"],"translatedTitle":"Kampfaktivit\u00e4t und Etablierung einer wurfassoziierten Rangordnung bei Absetzferkeln nach der Neugruppierung","abstractE":"The aim of this study was to analyse the fighting activity of weaned piglets after mixing, particularly focused on the influence of origin litter on the rank positions achieved by individuals within a group. We formed 16 groups of twelve with either six piglets from two different litters each (6\/2) or four piglets from three different litters each (4\/3) balanced by weight and sex. Aggressive behaviour between piglets was analysed continuously for the first 72 h after mixing, and an individual rank index was calculated for each piglet. The total number of aggressive interactions differed significantly between both group compositions with piglets in composition 4\/3 having more fights than those in composition 6\/2 (27.3 fights vs 12.8 fights per piglet, p lt; 0.05). Piglets fought mainly against non-littermates. High-ranking piglets fought more than middle and low-ranking piglets (24.9 vs 17.3 and 14.5 fights per piglet, p lt; 0.05) and were more often the aggressors (18.6 vs 5.8 and 2.6 attacks, p lt; 0.05). In both group compositions, littermates originating from the same litter within a group obtained similar rank positions. We conclude that the number of fights per piglet was affected by the number of litters combined within a group, probably due to the fact that most fights occurred between non-littermates. The social rank achieved by a piglet within a group was significantly affected by its origin litter with some litters being more dominant than others, when mixing an equal number of piglets from two or three different litters after weaning. ","date":{"year":2017,"date":"01\/2017","accepted":"2017-01-31"},"volume":"2017","openAccess":false,"journal":"Berliner und M\u00fcnchener Tier\u00e4rztliche Wochenschrift","titleImageId":944,"pages":"","redirects":["fighting-activity-and-establishment-of-a-litter-associated-dominance-order-in-weaned-piglets-after-mixing\/150\/3130\/100343"],"tierartCategories":[],"artikelartCategories":["Tier\u00e4rztliche Wochenschrift","Abostufe BMTW","Fachartikel"]} CY - Hannover DA - 01/2017 DO - 10.2376/0005-9366-16007 LA - English N2 - The aim of this study was to analyse the fighting activity of weaned piglets after mixing, particularly focused on the influence of origin litter on the rank positions achieved by individuals within a group. We formed 16 groups of twelve with either six piglets from two different litters each (6/2) or four piglets from three different litters each (4/3) balanced by weight and sex. Aggressive behaviour between piglets was analysed continuously for the first 72 h after mixing, and an individual rank index was calculated for each piglet. The total number of aggressive interactions differed significantly between both group compositions with piglets in composition 4/3 having more fights than those in composition 6/2 (27.3 fights vs 12.8 fights per piglet, p lt; 0.05). Piglets fought mainly against non-littermates. High-ranking piglets fought more than middle and low-ranking piglets (24.9 vs 17.3 and 14.5 fights per piglet, p lt; 0.05) and were more often the aggressors (18.6 vs 5.8 and 2.6 attacks, p lt; 0.05). In both group compositions, littermates originating from the same litter within a group obtained similar rank positions. We conclude that the number of fights per piglet was affected by the number of litters combined within a group, probably due to the fact that most fights occurred between non-littermates. The social rank achieved by a piglet within a group was significantly affected by its origin litter with some litters being more dominant than others, when mixing an equal number of piglets from two or three different litters after weaning. PB - Schlütersche Verlagsgesellschaft mbH & Co. KG PP - Hannover PY - 2017 T1 - Fighting activity and establishment of a litter-associated dominance order in weaned piglets after mixing T2 - Berliner und Münchener Tierärztliche Wochenschrift TI - Fighting activity and establishment of a litter-associated dominance order in weaned piglets after mixing TT - Kampfaktivität und Etablierung einer wurfassoziierten Rangordnung bei Absetzferkeln nach der Neugruppierung VL - 130 SN - 0005-9366 ER -