Using condensed tannin containing forages to establish sustainable and productive forage-based cattle production systems
Bibliographic record
Abstract
espanolLas leguminosas desempenan un papel clave en los sistemas de produccion de rumiantes, siendo la alfalfa el forraje de leguminosas mas frecuente en climas templados. La alfalfa puede mantener altos niveles de produccion en el ganado a pastoreo, pero su propension a causar timpanismo desalienta su inclusion a altas densidades de siembra. La alfalfa produce polifenoles de alto peso molecular conocidos como taninos condensados, en su cubierta de la semilla, mientras que otras leguminosas como el loto corniculado (Lotus corniculatus L.), garbanzo silvestre (Astragalus cicer L.), trebol purpura de pradera (Dalea purpurea Vent) y esparceta (Onobrychis vicifolia Scop.) producen taninos condensados en diversos grados. Los taninos condensados (CT) son responsables de prevenir el timpanismo, mejora la utilizacion del N ruminal, controla los parasitos intestinales, reduce la Escherichia coli en las heces y posiblemente las emisiones de metano enterico. El timpanismo de los pastos es casi siempre de tipo espumoso y surge como resultado de interacciones complejas entre el animal, el forraje y el microbioma del rumen. El riesgo de que la alfalfa provoque timpanismo es mayor cuando se encuentra en la etapa vegetativa y se vuelve considerablemente menor a medida que entra en la etapa de floracion. El riesgo de timpanismo en el ganado que pastorea alfalfa se puede reducir a traves de varias practicas de manejo. Cortar y marchitar la alfalfa antes de permitir el acceso del ganado al potrero puede reducir drasticamente la incidencia de timpanismo. La esparceta es comparable a la alfalfa en calidad nutricional y da como resultado ganancias diarias promedio en ganado que son similares a la alfalfa. Los TC que contienen son de alto peso molecular y muestran una mayor afinidad por Rubisco que la mayoria de los demas TC, lo que posiblemente le confiere una capacidad superior para prevenir el timpanismo. Entre los forrajes de TC, la espuma es quizas la mas adaptable para el empleo en un sistema de pastoreo de alto rendimiento donde se cultiva en rodales mixtos con alfalfa. EnglishLegumes play a key role in ruminant production systems, with alfalfa being the most common legume forage in temperate climates. Alfalfa can maintain high production levels in grazing livestock, but its propensity to cause bloating discourages its inclusion at high planting densities. Alfalfa produces high molecular weight polyphenols known as condensed tannins, in their seed coat, while other legumes such as the corniculated lotus (Lotus corniculatus L.), wild chickpea (Astragalus cicer L.), purple prairie clover (Dalea purpurea Vent) and sainfoin (Onobrychis vicifolia Scop.) produce condensed tannins in varying degrees. Condensed tannins (CT) are responsible for their bloat-safe nature, improving the use of ruminal N, controlling intestinal parasites, reducing Escherichia coli in faeces and possibly enteric methane emissions. Tympanism of grasses is almost always of the foamy type and arises as a result of complex interactions between the animal, the forage and the rumen microbiome. The risk that lucerne causes bloating is greater when it is in the vegetative stage and becomes considerably smaller as it enters the flowering stage. The risk of bloating in cattle pasturing alfalfa can be reduced through various management practices. Cutting and withering the alfalfa before allowing cattle access to the paddock can drastically reduce the incidence of bloat. The sainfoin is comparable to alfalfa in nutritional quality and results in average daily gains in cattle that are similar to alfalfa. The CTs they contain are of high molecular weight and show a greater affinity for Rubisco than most other CT scans, which possibly gives them a superior ability to prevent tympanism. Among TC forages, foam is perhaps the most adaptable for use in a high-performance grazing system where it is grown in mixed stands with alfalfa.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".