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Effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets
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| Zeitschriftentitel: | Canadian Journal of Animal Science |
|---|---|
| Personen und Körperschaften: | , , |
| In: | Canadian Journal of Animal Science, 84, 2004, 3, S. 481-490 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Canadian Science Publishing
|
| Schlagwörter: |
| author_facet |
Koenig, K. M. Beauchemin, K. A. Rode, L. M. Koenig, K. M. Beauchemin, K. A. Rode, L. M. |
|---|---|
| author |
Koenig, K. M. Beauchemin, K. A. Rode, L. M. |
| spellingShingle |
Koenig, K. M. Beauchemin, K. A. Rode, L. M. Canadian Journal of Animal Science Effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets Animal Science and Zoology Food Animals |
| author_sort |
koenig, k. m. |
| spelling |
Koenig, K. M. Beauchemin, K. A. Rode, L. M. 0008-3984 1918-1825 Canadian Science Publishing Animal Science and Zoology Food Animals http://dx.doi.org/10.4141/a03-108 <jats:p> Four British cross heifers fitted with ruminal and duodenal cannulas were used in an experiment designed as a 4 × 4 Latin square. The basal diet was composed of 90% barley grain concentrate and 10% barley silage (DM basis) with either no protein supplementation (13.6% CP), or an additional 1.2% CP (% of DM) in the form of urea, canola meal (CM) or blood meal (BM). Ruminal ammonia N concentration was highest (P < 0.05) for the urea-supplemented diet (111 ± 18 mg N L<jats:sup>-1</jats:sup>), but no differences were observed among the control, CM- or BM-supplemented diets (59 to 78 mg N L<jats:sup>-1</jats:sup>; P > 0.05). Ruminal pH averaged 5.78 and was not affected by protein source (P = 0.97). Canola meal and BM tended (P < 0.10) to increase microbial N flow by 31 g N d<jats:sup>-1</jats:sup> or 21% above the control diet. The response of microbial N flow to urea supplementation was intermediate between the control and true protein sources (P > 0.10). Ruminal OM and starch digestion were not affected by the dietary treatments (P > 0.10). In conclusion, barley grain-based finishing diets supplemented with protein sources of varying ruminal degradabilities increased microbial protein supply, but the improvement in microbial protein synthesis had no effect on diet fermentability. Key words: Protein supplements, microbial proteins, barley, beef cattle </jats:p> Effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets Canadian Journal of Animal Science |
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| title |
Effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets |
| title_unstemmed |
Effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets |
| title_full |
Effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets |
| title_fullStr |
Effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets |
| title_full_unstemmed |
Effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets |
| title_short |
Effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets |
| title_sort |
effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets |
| topic |
Animal Science and Zoology Food Animals |
| url |
http://dx.doi.org/10.4141/a03-108 |
| publishDate |
2004 |
| physical |
481-490 |
| description |
<jats:p> Four British cross heifers fitted with ruminal and duodenal cannulas were used in an experiment designed as a 4 × 4 Latin square. The basal diet was composed of 90% barley grain concentrate and 10% barley silage (DM basis) with either no protein supplementation (13.6% CP), or an additional 1.2% CP (% of DM) in the form of urea, canola meal (CM) or blood meal (BM). Ruminal ammonia N concentration was highest (P < 0.05) for the urea-supplemented diet (111 ± 18 mg N L<jats:sup>-1</jats:sup>), but no differences were observed among the control, CM- or BM-supplemented diets (59 to 78 mg N L<jats:sup>-1</jats:sup>; P > 0.05). Ruminal pH averaged 5.78 and was not affected by protein source (P = 0.97). Canola meal and BM tended (P < 0.10) to increase microbial N flow by 31 g N d<jats:sup>-1</jats:sup> or 21% above the control diet. The response of microbial N flow to urea supplementation was intermediate between the control and true protein sources (P > 0.10). Ruminal OM and starch digestion were not affected by the dietary treatments (P > 0.10). In conclusion, barley grain-based finishing diets supplemented with protein sources of varying ruminal degradabilities increased microbial protein supply, but the improvement in microbial protein synthesis had no effect on diet fermentability. Key words: Protein supplements, microbial proteins, barley, beef cattle </jats:p> |
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| author | Koenig, K. M., Beauchemin, K. A., Rode, L. M. |
| author_facet | Koenig, K. M., Beauchemin, K. A., Rode, L. M., Koenig, K. M., Beauchemin, K. A., Rode, L. M. |
| author_sort | koenig, k. m. |
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| container_title | Canadian Journal of Animal Science |
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| description | <jats:p> Four British cross heifers fitted with ruminal and duodenal cannulas were used in an experiment designed as a 4 × 4 Latin square. The basal diet was composed of 90% barley grain concentrate and 10% barley silage (DM basis) with either no protein supplementation (13.6% CP), or an additional 1.2% CP (% of DM) in the form of urea, canola meal (CM) or blood meal (BM). Ruminal ammonia N concentration was highest (P < 0.05) for the urea-supplemented diet (111 ± 18 mg N L<jats:sup>-1</jats:sup>), but no differences were observed among the control, CM- or BM-supplemented diets (59 to 78 mg N L<jats:sup>-1</jats:sup>; P > 0.05). Ruminal pH averaged 5.78 and was not affected by protein source (P = 0.97). Canola meal and BM tended (P < 0.10) to increase microbial N flow by 31 g N d<jats:sup>-1</jats:sup> or 21% above the control diet. The response of microbial N flow to urea supplementation was intermediate between the control and true protein sources (P > 0.10). Ruminal OM and starch digestion were not affected by the dietary treatments (P > 0.10). In conclusion, barley grain-based finishing diets supplemented with protein sources of varying ruminal degradabilities increased microbial protein supply, but the improvement in microbial protein synthesis had no effect on diet fermentability. Key words: Protein supplements, microbial proteins, barley, beef cattle </jats:p> |
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| imprint_str_mv | Canadian Science Publishing, 2004 |
| institution | DE-Brt1, DE-Zwi2, DE-D161, DE-Zi4, DE-Gla1, DE-15, DE-Pl11, DE-Rs1, DE-14, DE-105, DE-Ch1, DE-L229, DE-D275, DE-Bn3 |
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| spelling | Koenig, K. M. Beauchemin, K. A. Rode, L. M. 0008-3984 1918-1825 Canadian Science Publishing Animal Science and Zoology Food Animals http://dx.doi.org/10.4141/a03-108 <jats:p> Four British cross heifers fitted with ruminal and duodenal cannulas were used in an experiment designed as a 4 × 4 Latin square. The basal diet was composed of 90% barley grain concentrate and 10% barley silage (DM basis) with either no protein supplementation (13.6% CP), or an additional 1.2% CP (% of DM) in the form of urea, canola meal (CM) or blood meal (BM). Ruminal ammonia N concentration was highest (P < 0.05) for the urea-supplemented diet (111 ± 18 mg N L<jats:sup>-1</jats:sup>), but no differences were observed among the control, CM- or BM-supplemented diets (59 to 78 mg N L<jats:sup>-1</jats:sup>; P > 0.05). Ruminal pH averaged 5.78 and was not affected by protein source (P = 0.97). Canola meal and BM tended (P < 0.10) to increase microbial N flow by 31 g N d<jats:sup>-1</jats:sup> or 21% above the control diet. The response of microbial N flow to urea supplementation was intermediate between the control and true protein sources (P > 0.10). Ruminal OM and starch digestion were not affected by the dietary treatments (P > 0.10). In conclusion, barley grain-based finishing diets supplemented with protein sources of varying ruminal degradabilities increased microbial protein supply, but the improvement in microbial protein synthesis had no effect on diet fermentability. Key words: Protein supplements, microbial proteins, barley, beef cattle </jats:p> Effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets Canadian Journal of Animal Science |
| spellingShingle | Koenig, K. M., Beauchemin, K. A., Rode, L. M., Canadian Journal of Animal Science, Effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets, Animal Science and Zoology, Food Animals |
| title | Effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets |
| title_full | Effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets |
| title_fullStr | Effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets |
| title_full_unstemmed | Effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets |
| title_short | Effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets |
| title_sort | effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets |
| title_unstemmed | Effect of protein source on microbial protein synthesis and nutrient digestion in beef cattle fed barley grain-based diets |
| topic | Animal Science and Zoology, Food Animals |
| url | http://dx.doi.org/10.4141/a03-108 |