THE INFLUENCE OF GENETIC FACTORS ON MILK PRODUCING ABILITY AND REPRODUCTIVE QUALITIES OF HOLSTEIN COWS IN OOO "KRASNY MAYAK"
Bibliographic record
Abstract
В статье представлен анализ влияния таких генетических факторов, как линейная принадлежность и бык-отец, на молочную продуктивность и воспроизводительные качества коров голштинской породы в племзаводе ООО «Красный маяк» Ярославской области. Максимальный удой, содержание жира в молоке получены от коров собственной репродукции. Среди импортного скота наибольшие удои, жирно- и белковомолочность – у животных, завезённых из Венгрии и Германии. Большая часть анализируемого поголовья коров относится к линиям Уес Идеал (1922 гол., или 56,0%) и Рефлекшн Соверинг (1470 гол., или 42,8%). Коровы линии Уес Идеал отличаются высокими удоями молока по итогам первой лактации, коротким сервис-периодом, ранним возрастом при первом плодотворном осеменении при высокой живой массе. Для коров линии Монтвик Чифтейн характерно повышенное содержание жира в молоке, а также более высокий удой за наивысшую лактацию. Коровы родственной группы Розейф Ситейшн были самыми крупными при первом отёле. У животных линии Рефлекшн Соверинг все исследуемые показатели находятся на уровне среднего по стаду. Первотёлки от отцов канадского и американского происхождения выровнены по удою (+13 и +28 кг к среднему по стаду соответственно). Жирномолочность выше у животных канадского происхождения (+0,02% и +2,8 кг молочного жира), а белковомолочность – у коров американского происхождения (+0,02% и +3,2 кг молочного белка). По наивысшей лактации сочетание максимального удоя, содержания жира и белка в молоке характерно для коров, отцы которых немецкого происхождения (+167 кг молока, +0,03% и 9,5 кг молочного жира, +5,6 кг молочного белка к сверстницам стада). Лидером стада по удою дочерей за 305 дней первой лактации (10916 кг) является бык Стентонс РР 12652442 линии Уес Идеал. По результатам BLUP-оценки племенной ценности 11922 живых и выбывших быков-производителей голштинской породы в 2023 году в РФ Стентонс занял 18 место (данные ФГБНУ ВНИИплем). The article presents an analysis of the influence of such genetic factors as linear affiliation and paternal bull on the milk producing ability and reproductive qualities of Holstein cows in the stud farm of LLC "Krasny Mayak" in the Yaroslavl region. The maximum milk yields, fat content of milk are obtained from cows of their own reproduction. Among imported livestock, the highest yields, fat and protein milk content are in animals imported from Hungary and Germany. Most of the analyzed cow population belongs to the lines Vis Ideal (1922 heads or 56.0%) and Reflection Sovering (1470 heads or 42.8%). Cows of the Vis Ideal line are distinguished by high milk yields according to the results of the first lactation, a short service period, an early age at the first fertile insemination and a high live weight. Cows of the Montvik Chieftain line are characterized by an increased fat content in milk, as well as a higher milk yield during the highest lactation. The cows of the related group Rosafe Citation were the largest at first calving. In animals of the Reflection Sovering line all studied indicators are at the level of the average for the herd. First-calf heifers from fathers of Canadian and American origin are equal in milk yield (+13 and +28 kg to the average for the herd, respectively). The butterfat percentage is higher in animals of Canadian origin (+0.02% and +2.8 kg of milk fat), and the protein milk content is higher in cows of American origin (+0.02% and +3.2 kg of milk protein). According to the highest lactation the combination of maximum milk yield, fat and protein content in milk is typical for cows whose fathers are of German origin (+167 kg of milk, +0.03% and 9.5 kg of milk fat, +5.6 kg of milk protein compared to herdmates). The leader of the herd in milk yield of daughters for 305 days of the first lactation (10916 kg) is the bull Stantons PP 12652442 of the Vis Ideal line. According to the results of the BLUP-assessment of the breeding value of 11,922 living and retired Holstein servicing bulls in the Russian Federation in 2023, Stantons took 18th place (data from the FSBSI ARSIplem).
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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 | 0.000 |
| 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".