Toasting of cereal grains: effects on in vitro rumen gas production and VFA yield
The fermentation properties of the following feeds: pelleted barley (PB), toasted and pelleted barley (TPB), pelleted maize (PM) and toasted and pelleted maize (TPM) were studied using an in vitro gas production (GP) technique. Each feed sample (0.5g) was incubated (3 replications), with rumen fluid...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2010-01-01
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| Series: | Italian Journal of Animal Science |
| Subjects: | |
| Online Access: | http://www.aspajournal.it/index.php/ijas/article/view/799 |
| _version_ | 1811214792209203200 |
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| author | Seerp Tamminga Franco Tagliapietra Robert Tóthi |
| author_facet | Seerp Tamminga Franco Tagliapietra Robert Tóthi |
| author_sort | Seerp Tamminga |
| collection | DOAJ |
| description | The fermentation properties of the following feeds: pelleted barley (PB), toasted and pelleted barley (TPB), pelleted maize (PM) and toasted and pelleted maize (TPM) were studied using an in vitro gas production (GP) technique. Each feed sample (0.5g) was incubated (3 replications), with rumen fluid collected from 3 grazing lactating dairy cows. The kinetics of GP were automatically recorded for 72h. The amounts of DM disappeared (DMd) and the volatile fatty acid yields (VFA) were measured. On barley, compared to simple pelleting, toasting significantly (P<0.05) reduced DMd (87.5 vs. 86.2%), the asymptotic GP (A, 388 vs. 367ml/g DMd) and slightly increased the time of maximum GP rate (TRmax, 2.89 vs. 3.15h). On maize toasting did not affect DMd and A, but significantly reduced T1/2 (9.71 vs. 8.57; P<0.05) and TRmax (5.04 vs. 4.49, P<0.05). Toasting significantly reduced the VFA yields both of barley and maize. These results, in agreement with previous in sacco and in vivo observations, suggest that toasting might reduce the amount of potential fermentable substrate of barley, whereas it might increase the rate of fermentation of maize. |
| first_indexed | 2024-04-12T06:11:26Z |
| format | Article |
| id | doaj.art-3cbb7467355f4fd08474a5a6c08464b9 |
| institution | Directory Open Access Journal |
| issn | 1594-4077 1828-051X |
| language | English |
| last_indexed | 2024-04-12T06:11:26Z |
| publishDate | 2010-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Italian Journal of Animal Science |
| spelling | doaj.art-3cbb7467355f4fd08474a5a6c08464b92022-12-22T03:44:42ZengTaylor & Francis GroupItalian Journal of Animal Science1594-40771828-051X2010-01-0183s14214410.4081/ijas.2009.s3.142Toasting of cereal grains: effects on in vitro rumen gas production and VFA yieldSeerp TammingaFranco TagliapietraRobert TóthiThe fermentation properties of the following feeds: pelleted barley (PB), toasted and pelleted barley (TPB), pelleted maize (PM) and toasted and pelleted maize (TPM) were studied using an in vitro gas production (GP) technique. Each feed sample (0.5g) was incubated (3 replications), with rumen fluid collected from 3 grazing lactating dairy cows. The kinetics of GP were automatically recorded for 72h. The amounts of DM disappeared (DMd) and the volatile fatty acid yields (VFA) were measured. On barley, compared to simple pelleting, toasting significantly (P<0.05) reduced DMd (87.5 vs. 86.2%), the asymptotic GP (A, 388 vs. 367ml/g DMd) and slightly increased the time of maximum GP rate (TRmax, 2.89 vs. 3.15h). On maize toasting did not affect DMd and A, but significantly reduced T1/2 (9.71 vs. 8.57; P<0.05) and TRmax (5.04 vs. 4.49, P<0.05). Toasting significantly reduced the VFA yields both of barley and maize. These results, in agreement with previous in sacco and in vivo observations, suggest that toasting might reduce the amount of potential fermentable substrate of barley, whereas it might increase the rate of fermentation of maize.http://www.aspajournal.it/index.php/ijas/article/view/799In vitro gas production, Barley, Maize, VFA. |
| spellingShingle | Seerp Tamminga Franco Tagliapietra Robert Tóthi Toasting of cereal grains: effects on in vitro rumen gas production and VFA yield Italian Journal of Animal Science In vitro gas production, Barley, Maize, VFA. |
| title | Toasting of cereal grains: effects on in vitro rumen gas production and VFA yield |
| title_full | Toasting of cereal grains: effects on in vitro rumen gas production and VFA yield |
| title_fullStr | Toasting of cereal grains: effects on in vitro rumen gas production and VFA yield |
| title_full_unstemmed | Toasting of cereal grains: effects on in vitro rumen gas production and VFA yield |
| title_short | Toasting of cereal grains: effects on in vitro rumen gas production and VFA yield |
| title_sort | toasting of cereal grains effects on in vitro rumen gas production and vfa yield |
| topic | In vitro gas production, Barley, Maize, VFA. |
| url | http://www.aspajournal.it/index.php/ijas/article/view/799 |
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