Introduction of biotechnology in animal breeding, as a factor of improving its efficiency
| Autor: | Y. A. Kozub, T. A. Khoroshailo, I. V. Serdyuchenko, O. A. Boginskaya |
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| Rok vydání: | 2020 |
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| Zdroj: | IOP Conference Series: Earth and Environmental Science. 548:042051 |
| ISSN: | 1755-1315 1755-1307 |
| Popis: | The article presents the results of the introduction of the biotechnological method to improve the reproduction of the herd of Holstein cattle. Comparative data on the growth of calves obtained in different ways are given: from artificial insemination and transplantation of embryos during the growing period - from birth to the age of 18 months. It was found that calves obtained from the biotechnological method grew faster than their peers obtained from artificial insemination. The difference was 18.3 kg in favor of the heifers of the experimental group. The largest average daily gain in live weight was observed during the period from 12 to 18 months - 50 g is naturally in favor of the heifers of the experimental group. The difference in live weight during the first insemination between the heifers of the studied groups was 10.0 kg or 2.5%. The fertility rate was +2.0 absolute percent. The insemination index was excellent and amounted to a difference between experimental groups of +0.6 absolute growth. The conditional profit from the cultivation of Holstein heifers obtained by the method of embryo transplantation amounted to 267.8 thousand rubles. Profitability was 22.4 percent. |
| Databáze: | OpenAIRE |
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