Évaluation de la technologie de la semence du taureau au centre de multiplication des animaux performants (CMAP) de Loumbila au Burkina Faso : Forces et Faiblesses
Bibliographic record
Abstract
Objectif : La présente étude vise à évaluer le protocole de la technologie de la semence de taureaux pratiqué au Centre de Multiplication des Animaux Performants de Loumbila. Méthodologie et résultats : Au total, 256 éjaculats ont été collectés sur 4 taureaux d’âge et de poids compris entre les intervalles [24 -132] mois et [437-530] kg. Le protocole de traitement de la semence porte sur la détermination des caractéristiques macroscopiques et microscopiques des éjaculats. Les volumes moyens des éjaculats récoltés au moyen du vagin artificiel ont été de 4,31 ± 1 ml ; 3,75 ± 0,80 ml ; 2,34 ± 0,89 ml et 3,96 ± 0,57 ml respectivement pour les races Montbéliard, Tarentaise, Azawak et Métis. A l’aide du microscope, la motilité massale moyenne par race de taureau a été de 3,88 ± 0,72 ; 3,69 ± 1,30 ; 3,81 ± 0,98 et 2,54 ± 0,42. Au moyen d’un spectrophotomètre, la concentration moyenne par race a été de 2,64 ± 0,63 ; 2,78 ± 0,49 ; 2,59 ± 0,97 et 2,29 ± 0,53 (109 spz/ml). Les taux de spermatozoïdes anormaux ont représenté respectivement 19 ± 0,15% ; 13 ± 0,07% ; 10 ± 0,05% et 12 ± 0,06%. La motilité individuelle moyenne par race après décongélation a été de 83 ± 0,65% ; 80 ± 0,7% ; 79 ± 0,1% et 80 ± 1,1%. Le matériel et la méthodologie appliqués à Loumbila sont comparables à ceux rapportés dans les centres de production des semences agréés. Conclusion et application des résultats : Ces résultats sont des éléments de repères importants qui contribuent à valider la qualités du travail produit au CMAP. La semence produite à Loumbila pourrait être distribiuée et utilisée pour les insémination dans les élevages au Burkina Faso. Mots clés : biotechnologie, caractéristiques, CMAP, éjaculat, protocole, zébu. 19168 Tapsoba et al., J. Appl. Biosci. Vol : 183, 2023 Évaluation de la technologie de la semence du taureau au centre de multiplication des animaux performants (CMAP) de Loumbila au Burkina Faso : Forces et Faiblesses Semen technology in bulls at performing animals breeding centre of Loumbila, Burkina Faso: Strengths and Weaknesses ABSTRACT Objective: The present study aims to evaluate the bull semen technology protocol practiced at the Centre de Multiplication des Animaux Performants de Loumbila. Methodology and Results: A total of 256 ejaculates were collected from 4 bulls of age and weight ranging from [24-132] months to [437-530] kg. The semen processing protocol focused on the determination of macroscopic and microscopic characteristics of the ejaculates. The mean volumes of ejaculates collected by means of the artificial vagina were 4.31 ± 1 ml; 3.75 ± 0.80 ml; 2.34 ± 0.89 ml and 3.96 ± 0.57 ml for the Montbéliard, Tarentaise, Azawak and Métis breeds respectively. Using the microscope, the average mass motility per bull breed was 3.88 ± 0.72; 3.69 ± 1.30; 3.81 ± 0.98 and 2.54 ± 0.42. Using a spectrophotometer, the average concentration per breed was 2.64 ± 0.63; 2.78 ± 0.49; 2.59 ± 0.97 and 2.29 ± 0.53 (109 spz/ml). Abnormal sperm counts were 19 ± 0.15%; 13 ± 0.07%; 10 ± 0.05% and 12 ± 0.06% respectively. The average individual motility per breed after thawing was 83 ± 0.65%; 80 ± 0.7%; 79 ± 0.1% and 80 ± 1.1%. The material and methodology applied in Loumbila are comparable to those reported in the accredited seed production centres. The results obtained are comparable to the data reported in the literature. Conclusion and Application of results: Bull semen produced at CMAP can be declared of acceptable quality and accepted for AI. Therefore, bull semen can be produced and stored at the CMAP laboratory for local use and eventually exported to countries in the sub-region Keywords: biotechnology, characteristics, CMAP, ejaculate, protocol, zebu.
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How this classification was reachedexpand
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 | 0.006 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".