Improvement of the cattle breeding industry based on the application of polymicrobiological feed addi-tives "Yarosil"

Authors

  • Yuri Yanisovich Kravainis Yaroslavl Research Institute of Animal Husbandry and Fodder Production, a branch of the Federal State Budgetary Scientific Institution “Federal Scientific Center for Fodder Production and Agroecology named after V.R. Williams"
  • Alexander Vladimirovich Konovalov Yaroslavl Research Institute of Animal Husbandry and Fodder Production, a branch of the Federal State Budgetary Scientific Institution “Federal Scientific Center for Fodder Production and Agroecology named after V.R. Williams"
  • Raisa Stepanovna Kravaine Yaroslavl Research Institute of Animal Husbandry and Fodder Production, a branch of the Federal State Budgetary Scientific Institution “Federal Scientific Center for Fodder Production and Agroecology named after V.R. Williams"
  • Vitaly Yuryevich Morozov St. Petersburg State Agrarian University
  • Roman Vladimirovich Shkrabak St. Petersburg State Agrarian University
  • Vladimir Stepanovich Shkrabak St. Petersburg State Agrarian University

DOI:

https://doi.org/10.28983/asj.y2020i10pp94-99

Keywords:

heifers, milk production, service period, insemination index, incidence, safety, feed, feed additive “Yarosil”

Abstract

In the work carried out at Dzerzhinsky Plemzavod OJSC in the Yaroslavl region of the Yaroslavl region, the effect of the feed additive, Yarosil, fed to heifers during pregnancy, on young cows, was studied. It was established that the feed additive "Yarosil" had a prolonged positive effect on the body of first-calf heifers, which was expressed in improving the quality of household and normalizing physiological parameters. Feeding the feed additive “Yarosil” in the amount of 35 ml per animal per day increased the milk productivity of young cows for lactation by 562.5 kg - 12.10%, the average daily milk yield by 1.81 kg - 12.03%, while reducing feed costs by 1 kg of milk per 10.55% feed. units, reduced the service period by 21.2–16.77% of the day, the insemination index by 26.70%. The economic effect per heifer increased due to milk production by 3375.00 rubles. - 12.10%, sperm dose saving by 96.90 rubles - 26.70%. With an increase in the input rate by a factor of 2 (70 ml per animal per day), milk production per lactation increased by 1111.6 kg - 23.91%, average daily milk yield by 3.22 kg - 21.39%, while reducing feed costs by 1 kg of milk per 18.95%, feed. units, the service period decreased by 24,3–19,22% of the day, the insemination index by 27.74%. The economic effect per one heifer increased due to: milk production by 6669.60 - 23.91% rubles, saving sperm doses by 100.70 – 27.74% rubles. Regardless of the input rate, the feed additive “Yarosil” reduced the incidence by 16,67%, ensured 100% safety without the use of medical agents, increasing this indicator by 8.33%, and increased the economic effect due to the absence of the need for treatment costs by 7714, 00 rub., And safety for 28064.77 rub. The research results allowed to identify additional reserves for increasing the efficiency of the livestock industry with the rational use of feed, based on the use of feed additives "Yarosil" in the amount of 70 ml per animal per day.

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Author Biographies

Yuri Yanisovich Kravainis, Yaroslavl Research Institute of Animal Husbandry and Fodder Production, a branch of the Federal State Budgetary Scientific Institution “Federal Scientific Center for Fodder Production and Agroecology named after V.R. Williams"

Doctor of Biological Sciences, Senior Researcher

Alexander Vladimirovich Konovalov, Yaroslavl Research Institute of Animal Husbandry and Fodder Production, a branch of the Federal State Budgetary Scientific Institution “Federal Scientific Center for Fodder Production and Agroecology named after V.R. Williams"

Candidate of Agricultural Sciences

Raisa Stepanovna Kravaine, Yaroslavl Research Institute of Animal Husbandry and Fodder Production, a branch of the Federal State Budgetary Scientific Institution “Federal Scientific Center for Fodder Production and Agroecology named after V.R. Williams"

Candidate of  Veterinary Sciences, Senior Researcher

Vitaly Yuryevich Morozov, St. Petersburg State Agrarian University

Doctor of Veterinary Sciences

Roman Vladimirovich Shkrabak, St. Petersburg State Agrarian University

Candidate of Technical Sciences, Associate Professor

Vladimir Stepanovich Shkrabak, St. Petersburg State Agrarian University

Doctor of   Technical Sciences,  Professor

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Published

2020-10-27

Issue

Section

Veterinary and livestock

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