Pavel I Khristianovsky, Timur B Aldyyarov, Stanislav A Platonov, Erlan S Medetov

Animal Husbandry and Fodder Production. 2023. Vol. 106, no. 4. Р. 112-120.

doi:10.33284/2658-3135-106-4-112

Original article

Efficiency of the improved scheme for estrus stimulation in ewes

 

Pavel I Khristianovsky1, Timur B Aldyyarov2, Stanislav A Platonov3, Erlan S Medetov4

1,2,3,4Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, Orenburg, Russia

1paor1953@bk.ru, https://orcid.org/0000-0003-3902-4379

2aldyyarov97@mail.ru, https://orcid.org/0000-0002-8636-7553

3 platonstas1994@mail.ru, https://orcid.org/0000-0002-9806-412X

4erlanmedetov29@mail.ru, https://orcid.org/0000-0002-9424-4254

 

Abstract. A test of the combined use of specific sex hormones and the general-action biostimulator krezacin was carried out in a scheme for stimulating estrus in ewes. For the experiment, three groups of Romanov breed ewes, 24 heads in each, were formed during the period of spring anaphrodisia. All animals were fortified with eleovit. In group I (control) no stimulation of estrus was carried out. In groups II and III, stimulation was carried out according to the following scheme: 1st day - follimag, 8th day - progestamag, surfagon. In group III, sheep were additionally injected with a solution of krezacin on days 1 and 8 of stimulation. From 11 to 24 days the ewes were mated. The result was taken into account using ultrasound diagnostics 45 days after the end of mating. A study of the dynamics of sex hormones showed that the optimal ratio of hormones for ovulation was noted on the 11th day of stimulation. When sheep were mated during this period, the fertility rate in group I was 54.2%; in group II – 70.8%; in group III – 79.2%. Maximum fertility was obtained when krezacin was included in the hormonal stimulation of estrus.

Keywords: ewes, Romanov sheep, stimulation of sexual hunting, follimag, progestamag, surfagon, crezacin, fertilization

Acknowledgments: the work was performed in accordance with the research plan for 2021-2023 FSBRI FRC BST RAS (No. FSZM-2019-0006).

For citation: Khristianovsky PI, Aldyyarov TB, Platonov SA, Medetov ES. Efficiency of the improved scheme for estrus stimulation in ewes. Animal Husbandry and Fodder Production. 2023;106(4):112-120. (In Russ.). https://doi.org/10.33284/2658-3135-106-4-112

 

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Information about the authors:

Pavel I Khristianovsky, Dr. Sci. (Biology), Senior Researcher of the Department of Technology of Beef Cattle Breeding and Beef Production, Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 29 9 Yanvarya St., Orenburg, 460000, tel.: 8(3532)43-46-78, cell: 89877814269.

Timur B Aldyarov, PhD student, research specialist of the Department of Technology of Beef Cattle Breeding and Beef Production, Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 29 9 Yanvarya St., Orenburg, 460000.

Stanislav A Platonov, Cand. Sci. (Biology), Specialist of the Department of Technology of Beef Cattle Breeding and Beef Production, Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 29 9 Yanvarya St., Orenburg, 460000, tel.: 89619483786.

Erlan S Medetov, PhD student, research specialist of the Department of Technology of Beef Cattle Breeding and Beef Production, Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 29 9 Yanvarya St., Orenburg, 460000.

The article was submitted 07.11.2023; approved after reviewing 23.11.2023; accepted for publication 11.12.2023.

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