Effect of different nitrogen levels and irrigation techniques on the ruminal degradation of the crude protein of maize
Article Sidebar
Main Article Content
Abstract
0, 3, 6, 12 and 24 h in the rumen of four heifers. A completely randomized design was applied with factorial arrangement 2x2 of the treatments (nitrogen and irrigation technique).There were not statistical differences between the interactions of the variables under study (P < 0.05).However, drip irrigation vs gravity (8.72 vs 8.05%) and fertilization with 400 vs 300 kg de N ha-1 (8.52
vs. 8.25 %) increased (P ≤ 0.05) the crude protein content of the grain. The treatments did not affect (P ≥ 0.21) the PC solubility (19.4 ± 2.85 %).The ruminal degradation of the maize CP in the different incubation times did not change (P ≥ 0.20) by the maize grain obtained by means of irrigation technique or N levels used in maize production. The ruminal degradation rate of CP (0.10 ± 0.03) did not change (P ≥ 0.13) by the treatments. The percentage of crude protein effectively degraded in the rumen (42.14 ± 2.83 %) was similar (P ≥ 0.48) between treatments. Although the schemes of nitrogen levels or irrigation technique can modify the crude protein content in the maize grain, this did not influence on the characteristics of ruminal degradation of its crude protein.
Key words: irrigation techniques, fermentation pattern, solubility.
Article Details
Those authors that have publications with this journal accept the following terms:
1. They will retain their copyright and guarantee the journal the right of first publication of their work, which will be simultaneously subject to the License Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) that allows third parties to share the work whenever its author is indicated and its first publication this journal. Under this license the author will be free of:
- Share — copy and redistribute the material in any medium or format
- Adapt — remix, transform, and build upon the material
- The licensor cannot revoke these freedoms as long as you follow the license terms.
Under the following terms:
- Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- NonCommercial — You may not use the material for commercial purposes.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
2. The authors may adopt other non-exclusive license agreements to distribute the published version of the work (e.g., deposit it in an institutional telematics file or publish it in a monographic volume) whenever the initial publication is indicated in this journal.
3. The authors are allowed and recommended disseminating their work through the Internet (e.g. in institutional telematics archives or on their website) before and during the submission process, which can produce interesting exchanges and increase the citations of the published work. (See the Effect of open access).