Evaluation of Domperidone Dosages and Delivery Methods for the Treatment of Fescue Toxicosis in Beef Heifers
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Bibliographic record
Abstract
The objective of this study was to develop a practical method of domperidone delivery to ameliorate fescue toxicosis. Experiment 1 used heifers assigned to 7 treatment groups (n = 6 each): positive control (0.44 mg domperidone/kg BW daily s.c. for 9 d), negative control, and 0.22, 0.44, 0.88, and 1.76 mg domperidone/kg BW per os daily for 9 d, or a 3 g domperidone i.m. injection. Blood was collected every third day for 24 d. Domperidone concentrations in the 0.88 and 1.76 mg/kg BW treatments and the i.m. treatment were greater than positive control (P < 0.05) on d 3. None of the oral treatments were greater than the positive control on subsequent days. Between d 6 and 24, no oral treatments differed from the negative control except for the 1.76 mg/kg of BW treatment on d 9. The i.m. formulation increased domperidone when compared with the negative and positive controls (P < 0.05) on d 3 through d 21. Experiment 2 evaluated the i.m. injection protocol on performance. Heifers were assigned to control (n = 15) or i.m. domperidone (n = 15) treatments and grazed endophyte-infected fescue paddocks. Blood was sampled weekly and analyzed for progesterone and prolactin concentrations. Controls had reduced BW gains (P < 0.001) and BCS (P < 0.05) and elevated rectal temperatures (P < 0.05) compared with treated heifers. Domperidone treatment interacted with day on affecting prolactin (P < 0.0001) and progesterone (P < 0.0001). Intramuscular delivery of domperidone is an effective method for relieving fescue toxicosis.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it