Using whole oats grain as a source of fiber in calves’ rations
Two experiments were carried out aiming to study the value of whole oats (WO) as a potential source of physically effective fiber (peNDF) in rations for calves. In experiment 1, 24 Hereford calves (177 ± 18 kg) were randomly assigned to eight groups and these into one of four experimental rations (7...
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| Format: | Article |
| Language: | English |
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Universidad de la República, Facultad de Agronomía
2021-01-01
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| Series: | Agrociencia Uruguay |
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| Online Access: | http://agrocienciauruguay.uy/ojs/index.php/agrociencia/article/view/372/424 |
| _version_ | 1797725414741770240 |
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| author | Virginia Beretta Alvaro Simeone Oscar Bentancur Stefania Pancini Noel Banchero Emiliano García Virginia Martínez Lautaro Oneto |
| author_facet | Virginia Beretta Alvaro Simeone Oscar Bentancur Stefania Pancini Noel Banchero Emiliano García Virginia Martínez Lautaro Oneto |
| author_sort | Virginia Beretta |
| collection | DOAJ |
| description | Two experiments were carried out aiming to study the value of whole oats (WO) as a potential source of physically effective fiber (peNDF) in rations for calves. In experiment 1, 24 Hereford calves (177 ± 18 kg) were randomly assigned to eight groups and these into one of four experimental rations (79% concentrate), varying in the replacement level of grass hay (GH) for WO: 0:21, 7:14, 14:7, 21:0% dry matter (DM) basis WO:GH, respectively. Increasing WO level resulted in a quadratic response for peNDF (P= 0.04) with values above 15% of dm. Intake increased quadratically (P= 0.03) and dm digestibility increased linearly (P= 0.03). As a result, feed conversion efficiency tended to improve (P= 0.08). In Experiment 2, four rumen cannulated steers were assigned in a crossover design to one of two experimental rations (65% concentrate) varying in peNDF fiber source: 35% gh or 35% WO, aiming to study the fermentative pattern. Replacing GH for WO reduced mean daily rumen pH (5.9 vs. 6.3, P < 0.01), varying between 6.1 and 5.8, and always below pH values in gh. No differences were observed for the potentially degradable dm fraction, but fermentation rate was higher for WO (35.0 vs. 9.0 %/ h; P= 0.02), hence increasing effective degradability (58.3 vs. 65.4%; P= 0.048). Results from both experiments suggest it is viable to use WO as a peNDF source for concentrated rations. |
| first_indexed | 2024-03-12T10:30:53Z |
| format | Article |
| id | doaj.art-980bc51c51d549d0baa6bcfb160613b0 |
| institution | Directory Open Access Journal |
| issn | 2730-5066 |
| language | English |
| last_indexed | 2024-03-12T10:30:53Z |
| publishDate | 2021-01-01 |
| publisher | Universidad de la República, Facultad de Agronomía |
| record_format | Article |
| series | Agrociencia Uruguay |
| spelling | doaj.art-980bc51c51d549d0baa6bcfb160613b02023-09-02T09:15:28ZengUniversidad de la República, Facultad de AgronomíaAgrociencia Uruguay2730-50662021-01-01251e37210.31285/AGRO.25.372Using whole oats grain as a source of fiber in calves’ rationsVirginia Beretta0https://orcid.org/0000-0002-4762-5185Alvaro Simeone1https://orcid.org/0000-0001-5240-5710Oscar Bentancur2https://orcid.org/0000-0003-0509-5793Stefania Pancini3https://orcid.org/0000-0001-9647-7169Noel Banchero4https://orcid.org/0000-0002-6986-4654Emiliano García5https://orcid.org/0000-0003-2765-0997Virginia Martínez6https://orcid.org/0000-0002-7293-684XLautaro Oneto7https://orcid.org/0000-0002-1553-8853Universidad de la República, Facultad de Agronomía, Montevideo, UruguayUniversidad de la República, Facultad de Agronomía, Montevideo, UruguayUniversidad de la República, Facultad de Agronomía, Montevideo, Uruguay.Universidad de la República, Facultad de Agronomía, Montevideo, UruguayUniversidad de la República, Facultad de Agronomía, Montevideo, UruguayUniversidad de la República, Facultad de Agronomía, Montevideo, UruguayUniversidad de la República, Facultad de Agronomía, Montevideo, UruguayUniversidad de la República, Facultad de Agronomía, Montevideo, UruguayTwo experiments were carried out aiming to study the value of whole oats (WO) as a potential source of physically effective fiber (peNDF) in rations for calves. In experiment 1, 24 Hereford calves (177 ± 18 kg) were randomly assigned to eight groups and these into one of four experimental rations (79% concentrate), varying in the replacement level of grass hay (GH) for WO: 0:21, 7:14, 14:7, 21:0% dry matter (DM) basis WO:GH, respectively. Increasing WO level resulted in a quadratic response for peNDF (P= 0.04) with values above 15% of dm. Intake increased quadratically (P= 0.03) and dm digestibility increased linearly (P= 0.03). As a result, feed conversion efficiency tended to improve (P= 0.08). In Experiment 2, four rumen cannulated steers were assigned in a crossover design to one of two experimental rations (65% concentrate) varying in peNDF fiber source: 35% gh or 35% WO, aiming to study the fermentative pattern. Replacing GH for WO reduced mean daily rumen pH (5.9 vs. 6.3, P < 0.01), varying between 6.1 and 5.8, and always below pH values in gh. No differences were observed for the potentially degradable dm fraction, but fermentation rate was higher for WO (35.0 vs. 9.0 %/ h; P= 0.02), hence increasing effective degradability (58.3 vs. 65.4%; P= 0.048). Results from both experiments suggest it is viable to use WO as a peNDF source for concentrated rations.http://agrocienciauruguay.uy/ojs/index.php/agrociencia/article/view/372/424cattlegrowtheffective fiberdigestionfeed conversion |
| spellingShingle | Virginia Beretta Alvaro Simeone Oscar Bentancur Stefania Pancini Noel Banchero Emiliano García Virginia Martínez Lautaro Oneto Using whole oats grain as a source of fiber in calves’ rations Agrociencia Uruguay cattle growth effective fiber digestion feed conversion |
| title | Using whole oats grain as a source of fiber in calves’ rations |
| title_full | Using whole oats grain as a source of fiber in calves’ rations |
| title_fullStr | Using whole oats grain as a source of fiber in calves’ rations |
| title_full_unstemmed | Using whole oats grain as a source of fiber in calves’ rations |
| title_short | Using whole oats grain as a source of fiber in calves’ rations |
| title_sort | using whole oats grain as a source of fiber in calves rations |
| topic | cattle growth effective fiber digestion feed conversion |
| url | http://agrocienciauruguay.uy/ojs/index.php/agrociencia/article/view/372/424 |
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