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RESEARCH ON REPRODUCTIVE PARAMETERS OF THE PRESENT POPULATION OF SEMI-BURDEN HORSES BREED FROM THE STUD FARM BECLEAN, BISTRI?A-N?S?UD COUNTY

2009; AcademicPres; Volume: 64; Linguagem: Inglês

10.15835/buasvmcn-asb

2457-1423

N. Marcu, Ioana Camelia Ludu, O. Ludu, Mariana Şut-Gherman,

Reproductive Physiology in Livestock

The paper analyses aspects related to the reproductive indexes of the horse lot in the stud farm of Beclean, Bistri?a-N?s?ud county, and the research is conducted on a lot of 126 heads of mother mares. The research aims to determine the evolution of the number of heats and the number of coverings per gestation, the service period, the duration of gestation and the calving interval depending on calving and calendar years. We also calculated the index of fertility. The results of research show that the number of heats and the number of coverings per gestation, the service period and the calving interval are indexes that are strongly influenced by the environment, while the duration of gestation is strongly influenced by genes. The reproduction and genetic improvement of horses depend on the progress of reproduction processes. The reproductive parameters analysed in the paper fit within the characteristics of the breed and the differences are caused by environmental factors.