Comparison of the rumen passage rate of different forages using rare-earth markers
The passage rate of nine different forages (diploid perennial ryegrass, tetraploid perennial ryegrass, Italian ryegrass, hybrid ryegrass, meadow fescue, tall fescue, timothy, cocksfoot and white clover) was evaluated with help of two markers (Yb and Dy) in a small-scale study at IGER, Aberystwyth, U...
| Autor principal: | |
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| Formato: | Otro |
| Lenguaje: | sueco Inglés |
| Publicado: |
2006
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| Acceso en línea: | https://stud.epsilon.slu.se/12378/ |
| _version_ | 1855572052234207232 |
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| author | Hansson, Kristina |
| author_browse | Hansson, Kristina |
| author_facet | Hansson, Kristina |
| author_sort | Hansson, Kristina |
| collection | Epsilon Archive for Student Projects |
| description | The passage rate of nine different forages (diploid perennial ryegrass, tetraploid perennial ryegrass, Italian ryegrass, hybrid ryegrass, meadow fescue, tall fescue, timothy, cocksfoot and white clover) was evaluated with help of two markers (Yb and Dy) in a small-scale study at IGER, Aberystwyth, UK. Five dry Holstein-Friesian cows were used in a 4-period incomplete changeover design experiment. Cows received a mix of 30 kg maize silage (30% DM), 1 kg barley straw, 1 kg soyabean meal and dry cow mineral. At the beginning of each measurement period the cows were offered small amounts of two marker-labelled feeds which were randomly assigned to them, one Yb-labelled and one Dy-labelled. Grab samples of faeces were taken twice-daily over the next nine days. Faeces were dried, ground and analysed for concentration of markers. The concentrations were plotted against time and an equation was fitted and analysed statistically. There were no significant differences between passage rate of the different forages or markers. The highest passage rates were for dipolid perennial ryegrass (Dy-labelled) and white clover (Yb-labelled). |
| format | Otro |
| id | RepoSLU12378 |
| institution | Swedish University of Agricultural Sciences |
| language | Swedish Inglés |
| publishDate | 2006 |
| publishDateSort | 2006 |
| record_format | eprints |
| spelling | RepoSLU123782017-10-18T08:01:59Z https://stud.epsilon.slu.se/12378/ Comparison of the rumen passage rate of different forages using rare-earth markers Hansson, Kristina Animal feeding The passage rate of nine different forages (diploid perennial ryegrass, tetraploid perennial ryegrass, Italian ryegrass, hybrid ryegrass, meadow fescue, tall fescue, timothy, cocksfoot and white clover) was evaluated with help of two markers (Yb and Dy) in a small-scale study at IGER, Aberystwyth, UK. Five dry Holstein-Friesian cows were used in a 4-period incomplete changeover design experiment. Cows received a mix of 30 kg maize silage (30% DM), 1 kg barley straw, 1 kg soyabean meal and dry cow mineral. At the beginning of each measurement period the cows were offered small amounts of two marker-labelled feeds which were randomly assigned to them, one Yb-labelled and one Dy-labelled. Grab samples of faeces were taken twice-daily over the next nine days. Faeces were dried, ground and analysed for concentration of markers. The concentrations were plotted against time and an equation was fitted and analysed statistically. There were no significant differences between passage rate of the different forages or markers. The highest passage rates were for dipolid perennial ryegrass (Dy-labelled) and white clover (Yb-labelled). Passagehastigheten av nio olika foder (dipolidt engelskt rajgräs, tetraploidt engelsktrajgräs, Italienskt rajgräs, hybridrajgräs, ängssvingel, rörsvingel, timotej, hundäxing och vitklöver) undersöktes med hjälp av två markörer (Yb och Dy) i en liten studie. Fem Holstein -sinkor användes i ett ofullständigt 4-periods försök på IGER, Aberystwyth, UK. Korna fick en blandning av 30 kg majsensilage (ts ca 30%), 1 kg havrehalm, 1 kg sojamjöl och sinkomineral. På den första morgonen i varje försöksperiod fick korna en mindre mängd av de två markörmärkta foder som var lottade till dem, ett Yb-märkt och ett Dy-märkt. Gödselprover togs två gånger per dag under de nästkommande nio dagarna. Gödseln torkades, maldes och analyserades för innehållet av markörer. Koncentrationen av markörer plottades mot tid och ekvationen från regressionslinjen användes för att beräkna om det var skillnad i passagehastighet mellan foder. Det var ingen signifikant skillnad i passagehastighet mellan olika foder eller markörer. Högst beräknade passagehastighet hade diploidt engelskt rajgräs (Dy-markör) och vitklöver (Yb-markör). 2006-02-21 Other NonPeerReviewed application/pdf sv https://stud.epsilon.slu.se/12378/1/hansson_k_171018.pdf Hansson, Kristina, 2004. Comparison of the rumen passage rate of different forages using rare-earth markers. UNSPECIFIED, Uppsala. 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-s-7957 eng |
| spellingShingle | Animal feeding Hansson, Kristina Comparison of the rumen passage rate of different forages using rare-earth markers |
| title | Comparison of the rumen passage rate of different forages using rare-earth markers |
| title_full | Comparison of the rumen passage rate of different forages using rare-earth markers |
| title_fullStr | Comparison of the rumen passage rate of different forages using rare-earth markers |
| title_full_unstemmed | Comparison of the rumen passage rate of different forages using rare-earth markers |
| title_short | Comparison of the rumen passage rate of different forages using rare-earth markers |
| title_sort | comparison of the rumen passage rate of different forages using rare-earth markers |
| topic | Animal feeding |
| url | https://stud.epsilon.slu.se/12378/ https://stud.epsilon.slu.se/12378/ |