Bakterietillväxt i strömedel till mjölkkor
The resting area is the most important place in the barn for the dairy cow, sometimes called the heart of the free stall system. Inadequate design of the lying area, and lack of or poor quality of bedding materials may reduce the hygiene of the stall. Poor management regarding the cleanliness of t...
| Autor principal: | |
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| Formato: | M2 |
| Lenguaje: | sueco Inglés |
| Publicado: |
SLU/Dept. of Animal Nutrition and Management (until 231231)
2013
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| Materias: |
| _version_ | 1855570950010961920 |
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| author | Törner, Maria |
| author_browse | Törner, Maria |
| author_facet | Törner, Maria |
| author_sort | Törner, Maria |
| collection | Epsilon Archive for Student Projects |
| description |
The resting area is the most important place in the barn for the dairy cow, sometimes called the heart of the free stall system. Inadequate design of the lying area, and lack of or poor quality of bedding materials may reduce the hygiene of the stall. Poor management regarding the cleanliness of the resting area may lead to poor animal hygiene and increased bacterial growth. This in turn will lead to increased risk for environmental mastitis as well as impairing milk quality through contamination with spores.
In this literature study the most commonly used bedding materials; straw, sawdust, wood shavings, clean sand, recycled sand, peat and recycled manure solids, are compared to one another with regards to their ability to resist bacterial growth. Effects of adding hydrated lime to bedding materials have also been studied.
Most bacteria need humidity and prefer a quite high water activity to be able to grow. In addition, bacteria need sources of energy and organic nutrients and obtain these from carbon and nitrogen compounds. Studies show that there is a difference between organic and inorganic bedding materials with regard to their function as a bacterial substrate. Organic bedding has shown to be more susceptible for bacterial growth.
In conclusion the composition of bedding material is of great importance in the maintenance of dairy cow health. In this study a difference between bedding materials in their ability to enhance bacterial growth has been observed.
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| format | M2 |
| id | RepoSLU6062 |
| institution | Swedish University of Agricultural Sciences |
| language | swe Inglés |
| publishDate | 2013 |
| publishDateSort | 2013 |
| publisher | SLU/Dept. of Animal Nutrition and Management (until 231231) |
| publisherStr | SLU/Dept. of Animal Nutrition and Management (until 231231) |
| record_format | eprints |
| spelling | RepoSLU60622013-09-19T15:00:30Z Bakterietillväxt i strömedel till mjölkkor Bacterial growth in bedding material used for dairy cows Törner, Maria bakterietillväxt mastit mjölkko strömedel biologiska egenskaper The resting area is the most important place in the barn for the dairy cow, sometimes called the heart of the free stall system. Inadequate design of the lying area, and lack of or poor quality of bedding materials may reduce the hygiene of the stall. Poor management regarding the cleanliness of the resting area may lead to poor animal hygiene and increased bacterial growth. This in turn will lead to increased risk for environmental mastitis as well as impairing milk quality through contamination with spores. In this literature study the most commonly used bedding materials; straw, sawdust, wood shavings, clean sand, recycled sand, peat and recycled manure solids, are compared to one another with regards to their ability to resist bacterial growth. Effects of adding hydrated lime to bedding materials have also been studied. Most bacteria need humidity and prefer a quite high water activity to be able to grow. In addition, bacteria need sources of energy and organic nutrients and obtain these from carbon and nitrogen compounds. Studies show that there is a difference between organic and inorganic bedding materials with regard to their function as a bacterial substrate. Organic bedding has shown to be more susceptible for bacterial growth. In conclusion the composition of bedding material is of great importance in the maintenance of dairy cow health. In this study a difference between bedding materials in their ability to enhance bacterial growth has been observed. Liggplatsen för mjölkkor är kanske den viktigaste platsen i stallet och kallas ibland lösdriftens hjärta. Bristande utformning av liggytan, bristande mängd samt användning av strömedel av dålig kvalitet försämrar liggplatsens hygien. Bristande rutiner för renhållning av liggplatsen kan påverka kornas hygien och leda till ökad tillväxt av mikroorganismer. Bakterietillväxt kan i sin tur leda till försämrad juverhälsa samt försämra mjölkkvaliteten genom sporer. Denna litteraturstudie jämför bakterietillväxt och biokemiska egenskaper hos de vanligaste strömedlen; halm, sågspån, kutterspån, ren sand, återvunnen sand, torv och återvunnen fastgödsel. Även släckt kalks inverkan på tillväxt av bakterier då det blandats med spån eller halm har studerats. De flesta bakterier behöver fukt och föredrar ganska hög vattenaktivitet för att kunna växa. De är även i behov av organiska näringsämnen som kol- och kväveföreningar som energikälla. Studier visar att organiska och oorganiska strömedel har olika fysiska och biokemiska egenskaper. Flera av de organiska strömedlens fysikaliska och biokemiska egenskaper har visat sig gynna bakterietillväxt. Denna litteraturstudie visar att strömedels biologiska egenskaper har betydelse för bakterietillväxtens utveckling på kons liggplats samt för djurhälsan i besättningen. SLU/Dept. of Animal Nutrition and Management (until 231231) 2013 M2 swe eng https://stud.epsilon.slu.se/6062/ |
| spellingShingle | bakterietillväxt mastit mjölkko strömedel biologiska egenskaper Törner, Maria Bakterietillväxt i strömedel till mjölkkor |
| title | Bakterietillväxt i strömedel till mjölkkor |
| title_full | Bakterietillväxt i strömedel till mjölkkor |
| title_fullStr | Bakterietillväxt i strömedel till mjölkkor |
| title_full_unstemmed | Bakterietillväxt i strömedel till mjölkkor |
| title_short | Bakterietillväxt i strömedel till mjölkkor |
| title_sort | bakterietillväxt i strömedel till mjölkkor |
| topic | bakterietillväxt mastit mjölkko strömedel biologiska egenskaper |