Ulrike Höne , Lars Schrader , Richard Hölscher , Imke Traulsen , E. Tobias Krause
{"title":"在大型群养系统中饲养的育肥猪使用室外跑道，可通过计算机控制的大门出入","authors":"Ulrike Höne , Lars Schrader , Richard Hölscher , Imke Traulsen , E. Tobias Krause","doi":"10.1016/j.applanim.2024.106345","DOIUrl":null,"url":null,"abstract":"<div><p>Access to outdoor runs for small groups of fattening pigs, particularly in organic farming systems, are applied in practice and has been the subject of several studies. Access to an outdoor run has been shown to improve the welfare of pigs. However, little is known about the use of outdoor runs in large groups of up to 450 pigs. The aim of this study was to examine the usage of an outdoor run with restricted access in such a large group housing system, which involved using an indoor ventilation system when outdoor run access was restricted. A total of 900 pigs kept in two large groups of 450 pigs each were observed during the fattening period. Access to the outdoor run was provided by computer-controlled gates programmed to open at regular intervals during the day between 7:00 a.m. and 6:00 p.m. Opening phases of the gates to the outdoor run were signalled by a visual-acoustic signal. Restriction to the outdoor run was only on the way out, while access from the outdoor run to the inside area was continuously available. In addition to investigating the usage of the outdoor run, we also examined whether the pigs reacted to the visual-acoustic signals indicating the opening of the gates and whether the opening phases caused crowding in front of the gates. Furthermore, we evaluated the soiling of both the indoor area and the outdoor run. In these large group housing systems, the fattening pigs used the outdoor run continuously during the day, despite the restricted access. On average, 13.6 % of the fattening pigs were present in the outdoor run. No crowding, i.e., exaggerated accumulation of pigs, was observed at the gates during the opening phases. The fattening pigs mainly soiled two areas: an outdoor area near the fence and an uncovered lying area inside the barn. Our results from two large groups of pigs revealed, for the first time, important insights into how such groups use outdoor runs and automated gates.</p></div>","PeriodicalId":8222,"journal":{"name":"Applied Animal Behaviour Science","volume":"277 ","pages":"Article 106345"},"PeriodicalIF":2.2000,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S016815912400193X/pdfft?md5=c5a6b5bb6ad56d1b14cb29075c377a80&pid=1-s2.0-S016815912400193X-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Use of an outdoor run by fattening pigs kept in large group housing systems with announced access through computer-controlled gates\",\"authors\":\"Ulrike Höne , Lars Schrader , Richard Hölscher , Imke Traulsen , E. Tobias Krause\",\"doi\":\"10.1016/j.applanim.2024.106345\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Access to outdoor runs for small groups of fattening pigs, particularly in organic farming systems, are applied in practice and has been the subject of several studies. Access to an outdoor run has been shown to improve the welfare of pigs. However, little is known about the use of outdoor runs in large groups of up to 450 pigs. The aim of this study was to examine the usage of an outdoor run with restricted access in such a large group housing system, which involved using an indoor ventilation system when outdoor run access was restricted. A total of 900 pigs kept in two large groups of 450 pigs each were observed during the fattening period. Access to the outdoor run was provided by computer-controlled gates programmed to open at regular intervals during the day between 7:00 a.m. and 6:00 p.m. Opening phases of the gates to the outdoor run were signalled by a visual-acoustic signal. Restriction to the outdoor run was only on the way out, while access from the outdoor run to the inside area was continuously available. In addition to investigating the usage of the outdoor run, we also examined whether the pigs reacted to the visual-acoustic signals indicating the opening of the gates and whether the opening phases caused crowding in front of the gates. Furthermore, we evaluated the soiling of both the indoor area and the outdoor run. In these large group housing systems, the fattening pigs used the outdoor run continuously during the day, despite the restricted access. On average, 13.6 % of the fattening pigs were present in the outdoor run. No crowding, i.e., exaggerated accumulation of pigs, was observed at the gates during the opening phases. The fattening pigs mainly soiled two areas: an outdoor area near the fence and an uncovered lying area inside the barn. Our results from two large groups of pigs revealed, for the first time, important insights into how such groups use outdoor runs and automated gates.</p></div>\",\"PeriodicalId\":8222,\"journal\":{\"name\":\"Applied Animal Behaviour Science\",\"volume\":\"277 \",\"pages\":\"Article 106345\"},\"PeriodicalIF\":2.2000,\"publicationDate\":\"2024-07-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S016815912400193X/pdfft?md5=c5a6b5bb6ad56d1b14cb29075c377a80&pid=1-s2.0-S016815912400193X-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Animal Behaviour Science\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S016815912400193X\",\"RegionNum\":2,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"AGRICULTURE, DAIRY & ANIMAL SCIENCE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Animal Behaviour Science","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S016815912400193X","RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRICULTURE, DAIRY & ANIMAL SCIENCE","Score":null,"Total":0}
Use of an outdoor run by fattening pigs kept in large group housing systems with announced access through computer-controlled gates
Access to outdoor runs for small groups of fattening pigs, particularly in organic farming systems, are applied in practice and has been the subject of several studies. Access to an outdoor run has been shown to improve the welfare of pigs. However, little is known about the use of outdoor runs in large groups of up to 450 pigs. The aim of this study was to examine the usage of an outdoor run with restricted access in such a large group housing system, which involved using an indoor ventilation system when outdoor run access was restricted. A total of 900 pigs kept in two large groups of 450 pigs each were observed during the fattening period. Access to the outdoor run was provided by computer-controlled gates programmed to open at regular intervals during the day between 7:00 a.m. and 6:00 p.m. Opening phases of the gates to the outdoor run were signalled by a visual-acoustic signal. Restriction to the outdoor run was only on the way out, while access from the outdoor run to the inside area was continuously available. In addition to investigating the usage of the outdoor run, we also examined whether the pigs reacted to the visual-acoustic signals indicating the opening of the gates and whether the opening phases caused crowding in front of the gates. Furthermore, we evaluated the soiling of both the indoor area and the outdoor run. In these large group housing systems, the fattening pigs used the outdoor run continuously during the day, despite the restricted access. On average, 13.6 % of the fattening pigs were present in the outdoor run. No crowding, i.e., exaggerated accumulation of pigs, was observed at the gates during the opening phases. The fattening pigs mainly soiled two areas: an outdoor area near the fence and an uncovered lying area inside the barn. Our results from two large groups of pigs revealed, for the first time, important insights into how such groups use outdoor runs and automated gates.
期刊介绍：
This journal publishes relevant information on the behaviour of domesticated and utilized animals.
Topics covered include:
-Behaviour of farm, zoo and laboratory animals in relation to animal management and welfare
-Behaviour of companion animals in relation to behavioural problems, for example, in relation to the training of dogs for different purposes, in relation to behavioural problems
-Studies of the behaviour of wild animals when these studies are relevant from an applied perspective, for example in relation to wildlife management, pest management or nature conservation
-Methodological studies within relevant fields
The principal subjects are farm, companion and laboratory animals, including, of course, poultry. The journal also deals with the following animal subjects:
-Those involved in any farming system, e.g. deer, rabbits and fur-bearing animals
-Those in ANY form of confinement, e.g. zoos, safari parks and other forms of display
-Feral animals, and any animal species which impinge on farming operations, e.g. as causes of loss or damage
-Species used for hunting, recreation etc. may also be considered as acceptable subjects in some instances
-Laboratory animals, if the material relates to their behavioural requirements
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