Motivation for eating roughage in sows
Today’s feeding methods can determine the domestic pig’s abilities to fulfill basic behavioral needs, such as foraging, and the way in which pigs are feed is an important aspect. Feed does not only provide the energy and nutrients critical for survival, but feeding is also associated with a number o...
| Autor principal: | |
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| Formato: | Second cycle, A2E |
| Lenguaje: | sueco Inglés |
| Publicado: |
2011
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| Acceso en línea: | https://stud.epsilon.slu.se/2315/ |
| _version_ | 1855570416757637120 |
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| author | Bergström, Tove |
| author_browse | Bergström, Tove |
| author_facet | Bergström, Tove |
| author_sort | Bergström, Tove |
| collection | Epsilon Archive for Student Projects |
| description | Today’s feeding methods can determine the domestic pig’s abilities to fulfill basic behavioral needs, such as foraging, and the way in which pigs are feed is an important aspect. Feed does not only provide the energy and nutrients critical for survival, but feeding is also associated with a number of other factors contributing to well-being and reproduction. Today the feed for gestated sows is often composed by high energy and low dietary fiber grain products such as wheat. Three kg of this kind of feed can often be consumed by the sow within 20 minutes. Hunger leads to stress which often causes some kind of stereotypic behavior. One way to reduce that kind of behavior and to relieve the feeling of hunger and stress is to allow the sow access to low energy, high fiber feedstuff in the form of roughage. At least half of the sows requirements for energy intake can be covered by roughage without affecting the production and access to roughage gives the sows a possibility to perform a feeding behavior they are highly motivated to perform. The performance of stereotypies has been used as evidence of reduced welfare; when an animal has a high motivation to perform a certain behavior but the environment does not allow the animal to perform this. So how can high motivation to perform a certain feeding related behavior due to hunger, be measured? The aim of this study was to investigate if sows given a lower amount of concentrate feed are more motivated to eat silage. In the study a total of 39 gestated Yorkshire and Yorkshire x Swedish Landrace sows were given either a restricted amount of commercial feed, 60 percentages, or 100 percentage of recommended feed ratio together with free amount of grass-silage. The results showed that the sows with lower commercial feed ratio had a 17 percentage higher frequency of time spend chewing on silage and they also had a 52 percentage lower average duration time from opening the feeding crate after feeding, until chewing on silage for the first time. The results can correspond to that sows given a lower feed ratio have a higher motivation for eating silage due to hunger. During the treatment period weight and backfat thickness gain differed between treatments and was lower among sows given 60 percentage commercial feed ratio. However this did not have any effect on piglet production. |
| format | Second cycle, A2E |
| id | RepoSLU2315 |
| institution | Swedish University of Agricultural Sciences |
| language | swe Inglés |
| publishDate | 2011 |
| publishDateSort | 2011 |
| record_format | eprints |
| spelling | RepoSLU23152012-04-20T14:18:00Z https://stud.epsilon.slu.se/2315/ Motivation for eating roughage in sows Bergström, Tove Animal feeding Today’s feeding methods can determine the domestic pig’s abilities to fulfill basic behavioral needs, such as foraging, and the way in which pigs are feed is an important aspect. Feed does not only provide the energy and nutrients critical for survival, but feeding is also associated with a number of other factors contributing to well-being and reproduction. Today the feed for gestated sows is often composed by high energy and low dietary fiber grain products such as wheat. Three kg of this kind of feed can often be consumed by the sow within 20 minutes. Hunger leads to stress which often causes some kind of stereotypic behavior. One way to reduce that kind of behavior and to relieve the feeling of hunger and stress is to allow the sow access to low energy, high fiber feedstuff in the form of roughage. At least half of the sows requirements for energy intake can be covered by roughage without affecting the production and access to roughage gives the sows a possibility to perform a feeding behavior they are highly motivated to perform. The performance of stereotypies has been used as evidence of reduced welfare; when an animal has a high motivation to perform a certain behavior but the environment does not allow the animal to perform this. So how can high motivation to perform a certain feeding related behavior due to hunger, be measured? The aim of this study was to investigate if sows given a lower amount of concentrate feed are more motivated to eat silage. In the study a total of 39 gestated Yorkshire and Yorkshire x Swedish Landrace sows were given either a restricted amount of commercial feed, 60 percentages, or 100 percentage of recommended feed ratio together with free amount of grass-silage. The results showed that the sows with lower commercial feed ratio had a 17 percentage higher frequency of time spend chewing on silage and they also had a 52 percentage lower average duration time from opening the feeding crate after feeding, until chewing on silage for the first time. The results can correspond to that sows given a lower feed ratio have a higher motivation for eating silage due to hunger. During the treatment period weight and backfat thickness gain differed between treatments and was lower among sows given 60 percentage commercial feed ratio. However this did not have any effect on piglet production. I dagens grisproduktion kan utfodringsmetoderna spegla grisens möjligheter att få utlopp för basala beteenden som födosök och hur grisen utfodras är en viktig aspekt. Grisens foder utgörs inte bara av energi och de näringsämnen som behövs för överlevnad, utan det berör även många andra faktorer som bidrar till en bra djurvälfärd och reproduktion. Foder till dräktiga suggor består ofta av spannmål med hög koncentration av energi och lågt fiberinnehåll. Tre kg av denna sorts foder konsumeras ofta av suggan inom 20 minuter. Hunger hos suggan leder ofta till stress vilket i sin tur kan leda till stereotypa beteenden. Ett sätt att minska dessa typer av beteenden och stress är att erbjuda suggan tillgång till grovfoder med lägre energi- och högre fiberinnehåll än spannmål. Åtminstone halva suggans rekommenderade energiintag kan täckas upp av grovfoder utan att påverka hennes smågrisproduktion och tillgången till grovfoder ger henne en möjlighet att utföra ett födosöks beteende hon är starkt motiverad att utföra. Utförandet av stereotypa beteenden har använts som belägg för reducerad djurvälfärd; när ett djur har en stor motivation att utföra ett visst beteende men miljön tillåter inte djuret att genomföra det den vill. Så hur kan motivationen att utföra ett vist födorelaterad beteende, på grund av hunger, mätas? Syftet med denna studie var att undersöka om suggor som ges en mindre mängd kommersiellt suggfoder är mer motiverade att äta ensilage. I studien fick totalt 39 dräktiga Yorkshire och Yorkshire x Lantras suggor endera en begränsad giva av kommersiellt suggfoder, 60 procent, eller den rekommenderade fodergivan, 100 procent tillsammans med fri tillgång till gräsensilage. Resultaten visade att suggor med restriktiv fodergiva spenderade 17 procent mer tid åt att äta ensilage och hade även 52 procent kortare genomsnittstid från det att foderbåsen öppnas upp efter utfodring av kommersiellt suggfoder till att de tuggade på ensilage för första gången. Dessa resultat kan tyda på att suggor som får en lägre kommersiell fodergiva har en högre motivation att äta ensilage på grund av större hungerkänsla. Under försöksperioden skiljde sig den erhållna vikt och späcktjockleken mellan behandlingarna och resultaten visade att det var lägre för de suggor som fick begränsad fodergiva. Däremot påverkade inte vikt eller späcktjockleken suggornas smågrisproduktion. 2011-02-28 Second cycle, A2E NonPeerReviewed application/pdf swe https://stud.epsilon.slu.se/2315/1/bergstrom_t_110228.pdf Bergström, Tove, 2011. Motivation for eating roughage in sows : as an indiction of hunger. Second cycle, A2E. Uppsala: (VH) > Dept. of Animal Nutrition and Management (until 231231) <https://stud.epsilon.slu.se/view/divisions/OID-650.html> urn:nbn:se:slu:epsilon-6-439 eng |
| spellingShingle | Animal feeding Bergström, Tove Motivation for eating roughage in sows |
| title | Motivation for eating roughage in sows |
| title_full | Motivation for eating roughage in sows |
| title_fullStr | Motivation for eating roughage in sows |
| title_full_unstemmed | Motivation for eating roughage in sows |
| title_short | Motivation for eating roughage in sows |
| title_sort | motivation for eating roughage in sows |
| topic | Animal feeding |
| url | https://stud.epsilon.slu.se/2315/ https://stud.epsilon.slu.se/2315/ |