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Воспроизводительные способности коров породы салерс в период их акклиматизации в условиях Северного Зауралья

Воспроизводительные способности коров породы салерс в период их акклиматизации в условиях Северного Зауралья

Abstract

The paper presents the characteristics of the reproductive performance of specialized meat breed Salers farmed in the south of the Tyumen region, which since 2002 has been imported from France. Investigations were carried out on cows of different generations of animals. At that imported animals belong to the zero generation, their descendants to the 1st and grandchildren belong to the 2nd generation of genetic and environmental. Observation of animals of different generations have shown that acclimatization has postponed its mark on the reproductive functions of animals. Thus the import of breeding cows were characterized by a longer recovery period after delivery, which in turn increased the interval between calving. Since the average length of time between the first and second calving in imported animals was 432 days, their daughters 410 days, giving zero generation by 5.4%, and granddaughters 397 days, which is less than the imported cows by 8.8 % P> 0.95. With age, the animals showed a decrease of this index. Evaluation on the effectiveness of livestock shows quite satisfactory level of fertility of cows, where each cow at intervals more than a year receive litter. With the highest rates are found in cows of the second generation, where the coefficient of reproductive ability was 0.97 after the third calving. Average for all calving in cows of the second generation was 0.93, the cows of the first generation of 0.92 and 0.91 the zero generation. The results lead to the conclusion, acclimatization Salers cattle breed in the North Trans-Ural was quite successful, evidenced by the best indicators of reproduction of cows 2 genetic and environmental generation.

В работе представлена характеристика воспроизводительных показателей породы салерс, разводимой в условиях юга Тюменской области, которую с 2002 г. импортировали из Франции. Исследования проводили на коровах разных поколений. При этом завезённыхживотных относили к нулевой генетикоэкологической генерации, их потомков к 1-й, а внуков ко 2-й генерации. Акклиматизация наложила свой отпечаток на воспроизводительные функции животных. Так, коровы импортной селекции характеризовались более продолжительным восстановительным периодом после родов, что, в свою очередь, увеличило промежуток между отёлами. Средняя продолжительность периода между первым и вторым отёлами у завезённыхживотных составила 432 дн., у их дочерей 410 дн. (на 5,4 % меньше), у внучек 397дн. (меньше, чем у завезённых коров, на 8,8 %, Р>0,95). С возрастом животных отмечалось снижение величины этого показателя. Оценка эффективности разведения скота, показывает вполне удовлетворительный уровень плодовитости коров, где от каждой коровы с интервалом чуть больше года получают приплод. При этом наивысший показатель отмечен у животных второй генерации, у которых коэффициент воспроизводительной способности после третьего отёла составляла 0,97. Средняя его величина за все отёлы у этих коров составил 0,93, у животных первой генерации 0,92 и нулевой генерации 0,91. Полученные результаты позволяют сделать вывод, что акклиматизация скота породы салерс в условиях Северного Зауралья прошла вполне успешно, о чем свидетельствуют наилучшие показатели воспроизводства коров 2 генетико-экологической генерации.

Keywords

МЯСНОЙ СКОТ, ПОРОДА САЛЕРС, ВОСПРОИЗВОДСТВО, МЕЖОТЕЛЬНЫЙ ПЕРИОД, ПОКОЛЕНИЯ ЖИВОТНЫХ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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