Dependence of productive qualities of cows of brown Swiss breed on their physiological devel-opment
DOI:
https://doi.org/10.28983/asj.y2021i5pp71-74Keywords:
brown Swiss breed, physiological development, productivity, genealogyAbstract
The brown Swiss breed of cattle, which is currently being bred in the Smolensk region for dairy and meat productivity, is of interest from the point of view of its production feasibility and competitiveness, and the biological properties of livestock. The research was carried out in a breeding reproducer for the breeding of brown Swiss cattle of the Smolensk region, in the conditions of the farm, the age of fruitful insemination, physiological development, linear affiliation and productive qualities were analyzed (n=384). According to the terms of fertilization, the animals were conditionally divided into three groups: - early-maturing 46 heads (12%) live weight of the first insemination 329 kg, medium-maturing 191 heads (49.7%) live weight 388 kg and late-maturing 147 heads (38.3%) live weight 429 kg. The genealogical structure of the analyzed livestock includes descendants of the related groups Meridian 90827 (46.3%), Concentrate 106157 (25.4%), Master 106902 (25.4%) and line Laird 71151 (2.9%). The highest milk yield and fat for the first (4520 kg) and highest lactation (5022 kg, 3.97 %) in late-maturing animals. The group of first-calf cows of medium precocity in terms of milk yield occupies an intermediate position (4334 kg). The difference in live weight between the third and first groups is significant (P<0.05). There were no significant differences in milk fat and protein between the groups of cows. From these studies, it follows that the larger the live weight at the first insemination, the more productive they are.
Downloads
References
Дунин И., Кочетков А., Шаркаев В. Племенные и продуктивные качества молочного скота в Российской Федерации // Молочное и мясное скотоводство. – 2010. – № 8. – С. 2–5.
Интенсивность выращивания тёлок и их последующие воспроизводительные качества / А.А. Некрасов [и др.] // Достижения науки и техники АПК. – 2013. – № 3. – С. 43–46.
Использование тёлок бурой швицкой породы в селекционном процессе в ПСХК «Новомихайловский»/ Д.В. Леутина [и др.] // Вестник аграрной науки. – 2019. – № 4(79). – С. 56–60.
Красота В.Ф., Лобанов В.Т., Джапаридхе Т.Г. Разведение сельскохозяйственных животных. – М.: Колос, 1983. – 424 с.
Новиков В.М. Бурая швицкая порода крупного рогатого скота. – Смоленск, 017. – С. 38–39.
Русанова С.А., Гонтов М.Е., Кольцов Д.Н. Изменение генеалогической структуры бурой швицкой породы в процессе селекции // Аграрный научный журнал. – 2020. – № 12. – С. 68–71.
Сельцов В.И., Молчанова Н.В., Калиевская Г.Ф. Формирование и реализация продуктивного потенциала коров // Зоотехния. – 2008. – № 3. – С. 2–3.
Стрекозов Н.И., Амерханов Х.А. Молочное скотоводство России. – М., 2013. – С. 88–89.
Цысь В.И., Медведева Е.Г., Леутина Д.В. Качественные показатели молока коров бурой швицкой породы и перспективы их улучшения // Молочная промышленность. – 2013. – № 7.– С. 42–43.
Downloads
Published
Issue
Section
License
Copyright (c) 2021 The Agrarian Scientific Journal
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.