Influence of replacement rate on the welfare of sows introduced to a large dynamic group
This experiment investigated the effects of replacing 10, 20, 30 or 40% of a dynamic group of forty sows on the welfare of newly-introduced animals. The experiment was replicated five times, using a total of 200 multiparous sows. Replacements took place at 3 week intervals, and 3 days prior to sows...
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| Veröffentlicht in: | Applied animal behaviour science 2004-01, Vol.85 (1), p.43-56 |
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| creator | O’Connell, N.E Beattie, V.E Moss, B.W |
| description | This experiment investigated the effects of replacing 10, 20, 30 or 40% of a dynamic group of forty sows on the welfare of newly-introduced animals. The experiment was replicated five times, using a total of 200 multiparous sows. Replacements took place at 3 week intervals, and 3 days prior to sows being added to the group the same number of animals were removed from the group. Sows were added to the dynamic group as pre-formed groups of four animals which had resided together for a period of 5 weeks beginning directly after their piglets were weaned. Replacement rate did not appear to influence overall levels of aggression to which newly-introduced animals were exposed on the day of mixing, however aggression among newly-introduced animals increased significantly as replacement rate increased between 20 and 40% (
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| doi_str_mv | 10.1016/j.applanim.2003.09.003 |
| format | Article |
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P<0.05). Injury levels measured 1 week post mixing did not differ significantly between treatments. Newly-introduced sows in the 10% replacement rate treatment spent more time in slatted areas and less time in kennel areas during the first week post mixing than newly-introduced sows in other treatments (
P<0.05). In addition, during the first week post mixing when sows in the 10% replacement rate treatment entered kennel areas they spent less time lying down (
P<0.05), and when they did lie down they spent less time lying in contact with other animals and more time lying close to the wall (
P<0.05) compared to newly-introduced sows in other treatments. It is suggested that this type of behaviour represents intimidation from resident sows. Newly-introduced sows in the 20, 30 and 40% replacement rate treatments showed similar lying behaviour. In all treatments the newly-introduced sows showed a significant increase in the time spent in kennel areas, and the time spent lying in contact with ‘resident’ sows during the first week post mixing, which suggests that the process of social integration with the resident group had begun. The results of the present study suggest that the welfare of newly-introduced sows in dynamic groups may be compromised when replacement rates of 10% are used. There appears to be no additional welfare benefit associated with increasing replacement rate above 20%.</description><identifier>ISSN: 0168-1591</identifier><identifier>EISSN: 1872-9045</identifier><identifier>DOI: 10.1016/j.applanim.2003.09.003</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Behaviour ; Dynamic group ; Replacement rate ; Sows ; Welfare</subject><ispartof>Applied animal behaviour science, 2004-01, Vol.85 (1), p.43-56</ispartof><rights>2003 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c341t-9ce41f509e05d3c14a3acbbe1ba2b27254cd7f548be84ac599f083209e137d3e3</citedby><cites>FETCH-LOGICAL-c341t-9ce41f509e05d3c14a3acbbe1ba2b27254cd7f548be84ac599f083209e137d3e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.applanim.2003.09.003$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,778,782,3539,27907,27908,45978</link.rule.ids></links><search><creatorcontrib>O’Connell, N.E</creatorcontrib><creatorcontrib>Beattie, V.E</creatorcontrib><creatorcontrib>Moss, B.W</creatorcontrib><title>Influence of replacement rate on the welfare of sows introduced to a large dynamic group</title><title>Applied animal behaviour science</title><description>This experiment investigated the effects of replacing 10, 20, 30 or 40% of a dynamic group of forty sows on the welfare of newly-introduced animals. The experiment was replicated five times, using a total of 200 multiparous sows. Replacements took place at 3 week intervals, and 3 days prior to sows being added to the group the same number of animals were removed from the group. Sows were added to the dynamic group as pre-formed groups of four animals which had resided together for a period of 5 weeks beginning directly after their piglets were weaned. Replacement rate did not appear to influence overall levels of aggression to which newly-introduced animals were exposed on the day of mixing, however aggression among newly-introduced animals increased significantly as replacement rate increased between 20 and 40% (
P<0.05). Injury levels measured 1 week post mixing did not differ significantly between treatments. Newly-introduced sows in the 10% replacement rate treatment spent more time in slatted areas and less time in kennel areas during the first week post mixing than newly-introduced sows in other treatments (
P<0.05). In addition, during the first week post mixing when sows in the 10% replacement rate treatment entered kennel areas they spent less time lying down (
P<0.05), and when they did lie down they spent less time lying in contact with other animals and more time lying close to the wall (
P<0.05) compared to newly-introduced sows in other treatments. It is suggested that this type of behaviour represents intimidation from resident sows. Newly-introduced sows in the 20, 30 and 40% replacement rate treatments showed similar lying behaviour. In all treatments the newly-introduced sows showed a significant increase in the time spent in kennel areas, and the time spent lying in contact with ‘resident’ sows during the first week post mixing, which suggests that the process of social integration with the resident group had begun. The results of the present study suggest that the welfare of newly-introduced sows in dynamic groups may be compromised when replacement rates of 10% are used. There appears to be no additional welfare benefit associated with increasing replacement rate above 20%.</description><subject>Behaviour</subject><subject>Dynamic group</subject><subject>Replacement rate</subject><subject>Sows</subject><subject>Welfare</subject><issn>0168-1591</issn><issn>1872-9045</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNqFkM9LwzAYhoMoOKf_guTkrTVpmrW5KcMfg4EXBW8hTb7OjLapSerYf2_m9OzphY_nfeF7ELqmJKeELm63uRrHTg22zwtCWE5EnuIEzWhdFZkgJT9FswTWGeWCnqOLELaEEM4omaH31dB2EwwasGuxhzSkoYchYq9iug04fgDeQdcq_4MEtwvYDtE7M2kwODqscKf8BrDZD6q3Gm-8m8ZLdNaqLsDVb87R2-PD6_I5W788rZb360yzksZMaChpy4kAwg3TtFRM6aYB2qiiKaqCl9pULS_rBupSaS5ES2pWJJ6yyjBgc3Rz3B29-5wgRNnboKFLQsBNQdJKsAXndQIXR1B7F4KHVo7e9srvJSXyIFJu5Z9IeRApiZApUvHuWIT0xpcFL4O2B2PGetBRGmf_m_gGuNmAwA</recordid><startdate>20040101</startdate><enddate>20040101</enddate><creator>O’Connell, N.E</creator><creator>Beattie, V.E</creator><creator>Moss, B.W</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QG</scope></search><sort><creationdate>20040101</creationdate><title>Influence of replacement rate on the welfare of sows introduced to a large dynamic group</title><author>O’Connell, N.E ; Beattie, V.E ; Moss, B.W</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c341t-9ce41f509e05d3c14a3acbbe1ba2b27254cd7f548be84ac599f083209e137d3e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Behaviour</topic><topic>Dynamic group</topic><topic>Replacement rate</topic><topic>Sows</topic><topic>Welfare</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>O’Connell, N.E</creatorcontrib><creatorcontrib>Beattie, V.E</creatorcontrib><creatorcontrib>Moss, B.W</creatorcontrib><collection>CrossRef</collection><collection>Animal Behavior Abstracts</collection><jtitle>Applied animal behaviour science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>O’Connell, N.E</au><au>Beattie, V.E</au><au>Moss, B.W</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of replacement rate on the welfare of sows introduced to a large dynamic group</atitle><jtitle>Applied animal behaviour science</jtitle><date>2004-01-01</date><risdate>2004</risdate><volume>85</volume><issue>1</issue><spage>43</spage><epage>56</epage><pages>43-56</pages><issn>0168-1591</issn><eissn>1872-9045</eissn><abstract>This experiment investigated the effects of replacing 10, 20, 30 or 40% of a dynamic group of forty sows on the welfare of newly-introduced animals. The experiment was replicated five times, using a total of 200 multiparous sows. Replacements took place at 3 week intervals, and 3 days prior to sows being added to the group the same number of animals were removed from the group. Sows were added to the dynamic group as pre-formed groups of four animals which had resided together for a period of 5 weeks beginning directly after their piglets were weaned. Replacement rate did not appear to influence overall levels of aggression to which newly-introduced animals were exposed on the day of mixing, however aggression among newly-introduced animals increased significantly as replacement rate increased between 20 and 40% (
P<0.05). Injury levels measured 1 week post mixing did not differ significantly between treatments. Newly-introduced sows in the 10% replacement rate treatment spent more time in slatted areas and less time in kennel areas during the first week post mixing than newly-introduced sows in other treatments (
P<0.05). In addition, during the first week post mixing when sows in the 10% replacement rate treatment entered kennel areas they spent less time lying down (
P<0.05), and when they did lie down they spent less time lying in contact with other animals and more time lying close to the wall (
P<0.05) compared to newly-introduced sows in other treatments. It is suggested that this type of behaviour represents intimidation from resident sows. Newly-introduced sows in the 20, 30 and 40% replacement rate treatments showed similar lying behaviour. In all treatments the newly-introduced sows showed a significant increase in the time spent in kennel areas, and the time spent lying in contact with ‘resident’ sows during the first week post mixing, which suggests that the process of social integration with the resident group had begun. The results of the present study suggest that the welfare of newly-introduced sows in dynamic groups may be compromised when replacement rates of 10% are used. There appears to be no additional welfare benefit associated with increasing replacement rate above 20%.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.applanim.2003.09.003</doi><tpages>14</tpages></addata></record> |
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| ispartof | Applied animal behaviour science, 2004-01, Vol.85 (1), p.43-56 |
| issn | 0168-1591 1872-9045 |
| language | eng |
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| source | Elsevier ScienceDirect Journals Complete - AutoHoldings |
| subjects | Behaviour Dynamic group Replacement rate Sows Welfare |
| title | Influence of replacement rate on the welfare of sows introduced to a large dynamic group |
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