Nitrate is safe to feed ad libitum in molasses roller drums as a source of non-protein nitrogen
We investigated voluntary intake, growth and safety of cattle offered low-quality forage diets plus isonitrogenous molasses-based liquid supplements containing either urea (U) or a calcium nitrate-containing compound (NO3). We hypothesised that changing the nitrogen source from U to calcium nitrate...
| Autores principales: | , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Commonwealth Scientific and Industrial Research Organisation
2019
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| Acceso en línea: | https://hdl.handle.net/10568/129328 |
| _version_ | 1855527844877172736 |
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| author | Goopy, John P. Hegarty, Roger S. |
| author_browse | Goopy, John P. Hegarty, Roger S. |
| author_facet | Goopy, John P. Hegarty, Roger S. |
| author_sort | Goopy, John P. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | We investigated voluntary intake, growth and safety of cattle offered low-quality forage diets plus isonitrogenous molasses-based liquid supplements containing either urea (U) or a calcium nitrate-containing compound (NO3). We hypothesised that changing the nitrogen source from U to calcium nitrate would not jeopardise animal health or affect intake. Angus cattle (n = 24) were allocated to six pens, with three pens each receiving a molasses supplement containing U or a molasses supplement containing NO3 for 31 days. There was a trend (P = 0.06) for the NO3 treatment group to consume more of the (oaten chaff) basal diet than the U treatment group. The U group consumed more supplement than did the NO3 group (1.31 vs 0.40 kg DM/head.day s.e.m. = 0.094, P < 0.0001), but total DM intake was not different (6.45 vs 6.10 kg/head.day, P = 0.15). Mean final animal liveweight was not different between treatments. Methaemoglobin levels were higher in the NO3 group (2.1 vs 1.3%, P < 0.001). Low consumption of nitrate was also reflected in there being no effect of nitrate on the methane production rate when assessed in open-circuit calorimetry chambers (7.1 vs 7.0 g/head.2 h, P = 0.898). It is confirmed that nitrate may be safely provided to cattle when dissolved at 154 g/kg in a molasses-based liquid supplement available ad libitum, but may not be an effective methane mitigant due to low NO3 intake. It is speculated that nitrate may be a useful tool to limit voluntary intake of non-protein nitrogen supplements. |
| format | Journal Article |
| id | CGSpace129328 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Commonwealth Scientific and Industrial Research Organisation |
| publisherStr | Commonwealth Scientific and Industrial Research Organisation |
| record_format | dspace |
| spelling | CGSpace1293282025-12-08T10:29:22Z Nitrate is safe to feed ad libitum in molasses roller drums as a source of non-protein nitrogen Goopy, John P. Hegarty, Roger S. nitrogen molasses nitrate protein We investigated voluntary intake, growth and safety of cattle offered low-quality forage diets plus isonitrogenous molasses-based liquid supplements containing either urea (U) or a calcium nitrate-containing compound (NO3). We hypothesised that changing the nitrogen source from U to calcium nitrate would not jeopardise animal health or affect intake. Angus cattle (n = 24) were allocated to six pens, with three pens each receiving a molasses supplement containing U or a molasses supplement containing NO3 for 31 days. There was a trend (P = 0.06) for the NO3 treatment group to consume more of the (oaten chaff) basal diet than the U treatment group. The U group consumed more supplement than did the NO3 group (1.31 vs 0.40 kg DM/head.day s.e.m. = 0.094, P < 0.0001), but total DM intake was not different (6.45 vs 6.10 kg/head.day, P = 0.15). Mean final animal liveweight was not different between treatments. Methaemoglobin levels were higher in the NO3 group (2.1 vs 1.3%, P < 0.001). Low consumption of nitrate was also reflected in there being no effect of nitrate on the methane production rate when assessed in open-circuit calorimetry chambers (7.1 vs 7.0 g/head.2 h, P = 0.898). It is confirmed that nitrate may be safely provided to cattle when dissolved at 154 g/kg in a molasses-based liquid supplement available ad libitum, but may not be an effective methane mitigant due to low NO3 intake. It is speculated that nitrate may be a useful tool to limit voluntary intake of non-protein nitrogen supplements. 2019 2023-03-10T14:33:20Z 2023-03-10T14:33:20Z Journal Article https://hdl.handle.net/10568/129328 en Limited Access Commonwealth Scientific and Industrial Research Organisation Goopy, John P.; Hegarty, R.S. 2019. Nitrate is safe to feed ad libitum in molasses roller drums as a source of non-protein nitrogen. Animal Production Science 59: 1288 |
| spellingShingle | nitrogen molasses nitrate protein Goopy, John P. Hegarty, Roger S. Nitrate is safe to feed ad libitum in molasses roller drums as a source of non-protein nitrogen |
| title | Nitrate is safe to feed ad libitum in molasses roller drums as a source of non-protein nitrogen |
| title_full | Nitrate is safe to feed ad libitum in molasses roller drums as a source of non-protein nitrogen |
| title_fullStr | Nitrate is safe to feed ad libitum in molasses roller drums as a source of non-protein nitrogen |
| title_full_unstemmed | Nitrate is safe to feed ad libitum in molasses roller drums as a source of non-protein nitrogen |
| title_short | Nitrate is safe to feed ad libitum in molasses roller drums as a source of non-protein nitrogen |
| title_sort | nitrate is safe to feed ad libitum in molasses roller drums as a source of non protein nitrogen |
| topic | nitrogen molasses nitrate protein |
| url | https://hdl.handle.net/10568/129328 |
| work_keys_str_mv | AT goopyjohnp nitrateissafetofeedadlibituminmolassesrollerdrumsasasourceofnonproteinnitrogen AT hegartyrogers nitrateissafetofeedadlibituminmolassesrollerdrumsasasourceofnonproteinnitrogen |