Reproduction Mares Of Novoaleksandrovskaya Heavy-Horse Breed Of Horses Dubrovsky Stud Farm

A basic task of reproduction is an increase of amount and improvement of quality of animals.      His clear organization assists the acceleration of rates of perfection of tribal and working horse, allows to take the structure of population to the economically reasonable sizes, and also to increase supplying with animals on a tribe, for meat, sport and on an export. Relization of these tasks is related to the annual receipt of foals from every with reproductive ability. Efficiency of breeding work in horse breeding and economy of branch considerably depend on reproductive ability of stallions and mares. Practice of the last decades demonstrates that even at optimum feeding at mares of factory breeds considerable decrease in an conception and high mortality of embryos is observed. Chirgin E. D. for the first time in dairy horse breeding has conducted a research on identification of connection of intensive milking with reproduction of mares. Results allow to draw a conclusion - intensity of a milk ability for the entire period of economic use of mares of heavy breeds, Lithuanian, Soviet and Russian, doesn't exert negative impact on their reproduction abilities. It is important in practical activities stationary the koumiss of farms. At the best horse-breeding centers and in farms of various forms of ownership of Ukraine have on 80 - 90 foals from 100 mares. But in general on the republic this indicator low (31 - 35%) that negatively affects horse breeding economy. The main indicator of reproduction of a livestock in horse breeding receiving (the heads, percent) foals counting on 100 mares who were in economy for the beginning of calendar year. Besides, consider safety of foals from the birth before depriving (the relation of quantity of the separated foals to been born), percent of in-foal of mares from quantity coupled, a share of those mares, aborted and have given birth to dead foals, the sperm of stallions impregnating ability and other indicators which in a complex influence an exit of live foals. These indicators are directly connected with economic efficiency of production therefore the analysis of reproductive ability and a research of the reasons of its variation is a prerequisite of objective assessment in any branch of livestock production. Studying of indicators of reproductive ability of mares of novoaleksandrovsky heavy breed for different years was the purpose of researches. Indicators of reproductive ability of mares of a tribal farm on breeding of novoaleksandrovsky heavy breed of branch of Dibrovsky horse-breeding center of the State breeding horse breeding of Ukraine. Data for 1995 and 2000 are taken from the State book of breeding horses of novoaleksandrovsky heavy breed. Indicators from 2012 to 2016 are taken from a form  № 7-k, "Foaling and coupling of mares". Considering the technology of seasonal receiving milk accepted in the farm, in this economy technologically caused reduction of borders of a season of pairing is observed. There is positive dynamics of reproduction on the farm. The average value of an exit of foals from 100 mares in 2012-2016 at the level of 69,5 is sufficient for a background relative average quantity of pregnant of mares of 74,4%.The relative number of pregnant mares averaged 71.4% in 1995 and 2000 and 74.4% in 2012-2016. The number of foals per 100 mares was 50.4 in 1995 and 2000 and 69.5 in 2012-2016. Losses foals to abortions and stillbirths in 2012-2016 amounted to an average of 4.9%, which does not exceed technological requirements (5%) compared to losses in 1995 and 2000, which amounted to 21%.