Bibliographic record
Abstract
The objective of this thesis was to evaluate the influence of steroids and gonadotropins on reproduction in beef cattle. In experiment 1, beef heifers were used to determine the influence of growth-promoting implants on growth, reproductive development, estrous behavior, and pregnancy rate. Heifers were assigned to 1 of 4 implant treatment groups: control (CON); trenbolone acetate (TBA); trenbolone acetate plus estradiol (TBA+E2) or zeranol (ZER). Heifers were implanted once, A.I. and exposed to bull during this experiment. Body weight, BCS, HH, RTS, estrous behavior and pregnancy data were collected throughout this experiment. Average daily gain of heifers was greater for TBA+E2 heifers. Fewer heifers treated with ZER were classified with a cyclic RTS on d 106 than CON and TBA treated heifers while heifers treated with TBA+E2 were similar to all treatments. Heifers treated with TBA had increased mounts during estrus compared with all other treatments. Overall and A.I pregnancy rates did not differ among treatments.In experiment 2, superovulated beef donors were utilized to determine the feasibility of performing a cow-side LH assay (PrediBov®) on superovulated donors, with emphasis on determining how to use the results in a commercial program. Donors were subjected to superstimulation; blood samples were collected starting at CIDR removal, continuing every 6 h until a positive test was acquired or 36 h after CIDR removal. Whole blood (0.5 mL) was submitted to the assay and donors were inseminated approximately 12 and 24 h after a positive test or onset of estrus. The majority of positive LH tests occurred within 12 to 24 h after CIDR removal. Forty-four percent of the positive tests occurred 0 to 6 h after the onset of estrus. Donors that were inseminated 6 to 10 h after a positive LH test produced more viable and grade 1 embryos than donors inseminated either < 6 or 10 to 14 h after a positive test. There were no differences in embryo production between insemination times from the onset of estrus or between donors inseminated approximately 12 and 24 h after a positive test or the onset of estrus.
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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 | 0.001 |
| 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) | 0.001 | 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".