Regulation of the Limousine cows' and Heifers' Reproductive Function
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GUMINSKAYA, E. Yu., SIDUNOV, S., LOBAN, R., SIDUNOVA, M., LEBEDEV, N., LUPOLOV, Tatyana, EL BATTAWY , Khairi. Regulation of the Limousine cows' and Heifers' Reproductive Function. In: IOP Conference Series: Earth and Environmental Science, Ed. 852, 7 octombrie 2021, Veliky Novgorod. Bristol, UK: IOP Publishing Ltd, 2021, Vol. 852, Issue 1 , pp. 1-8. ISSN 17551307. DOI: https://doi.org/10.1088/1755-1315/852/1/012034
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IOP Conference Series: Earth and Environmental Science
Vol. 852, Issue 1 , 2021
Conferința "International Scientific and Practical Conference on Innovative Technologies in Agroindustrial, Forestry and Chemical Complexes and Rational Use of Natural Resources"
852, Veliky Novgorod, Rusia, 7 octombrie 2021

Regulation of the Limousine cows' and Heifers' Reproductive Function

DOI: https://doi.org/10.1088/1755-1315/852/1/012034

Pag. 1-8

Guminskaya E. Yu.1, Sidunov S.1, Loban R.1, Sidunova M.1, Lebedev N.2, Lupolov Tatyana3, El Battawy Khairi4
 
1 Scientific and Practical Center of the National Academy of Sciences of Belarus on animal husbandry,
2 Mozyr State Pedagogical University named after I.P. Shamyakin,
3 Scientific and practical institute of Biotechnologies in Animal Husbandry Veterinari Medicine,
4 National Research Centre, Animal Reproduction and Artificial Insemination, Cairo
 
Disponibil în IBN: 1 noiembrie 2021


Rezumat

Methods for regulating the cows' reproductive function have been introduced into agricultural practice long ago. In most cases, the schemes existing in the Republic of Belarus are used in dairy farming. The present study is aimed at studying the effectiveness of using the "CO-Synch"scheme with subsequent resynchronization on Limousine beef cows and heifers using pharmacological agents, taking into account the animals age and the calving season. It has been found that the use of the sexual cyclicity synchronization-stimulation "CO-Synch"scheme contributed to the achievement of cows' breeding efficiency in 43.9-55.5% of cases. The initial injection of hormonal preparations to heifers has contributed to fertile conception in 9.0-12.5-47.6% of cases. Resynchronization has increased their breeding efficiency to 50.0-63.6%. The best breeding efficiency of 60.0-61.5% has been observed in cows aged 5-9 years. Pregnancy has been found in 75.0% of animals calved in winter, 71.9% in spring, and 66.7% in summer.