Various breeds mares embryonic period and abortion reasons research

Various breeds mares embryonic period and abortion reasons research Working in Lithuania stud Vilnius section. The coverage of the work 36 pages, 6 pictures, 6 tables, examined 32 references. Aim: To investigate the influence of a variety of mare reproductive performance. Tasks: to investigate the different breeds of equine reproduction rates Vilnius equestrian center and explore a variety of mares influence embryonic period of time. The study was performed using data of Vilnius stud, bred their mares. The study was conducted by monitoring 6 different varieties. Use 5 different time data (2005, 2007, 2009, 2010, 2011) the mare reproductive evaluations. The time embryological study was to use data of 2013 year . Data processing of an Excel spreadsheet and SPSS . Examination of the different varieties of mare reproductive traits to identify the differences between varieties. Trakehner mares stud farm , it is increased by 14.3 percent . more mares than the beginning of the study , but the number of foals decreased in 2011 were 1.4 times less than in 2005 . Coverings have been done but more mares abort the study period also increased. Thoroughbreds kemel declined steadily decreased , respectively , and all other indicators . Arab thoroughbred horse grew all indicators mares grown twice as much as 2005 . There is growing foals (1.5 times ), while subjects in the number of abortions declined last year of the study did not abort mares . Old-style Žemaitukai equine abortions occur during the whole period . Mares and foals uneven number of other breeding mares increased by 1.3 times . Since the beginning of the study to increase the number of foals in 2009 were mainly obtained , which is 48.6 per cent . from mares should be in the same year . Large Žemaitukai abortavimai not common in horses , their study occurred in only 1 or 2 cases per year, representing 5.6 per cent. , And foals steadily increased ( 1.6 times more than the beginning of the study ) . Embryonic -term study noted that the average number of mares embryonic period is 335 days , the shortest time is observed in large Žemaitukai mare 321 days and the longest 352 days Thoroughbred mare . Žemaitukai and large Žemaitukai average foal is shorter than other mares in the stud farm -grown , it is 330 days , while the longest period average parity Arabians 340 days. Stud farm , most mares are mated , inseminated only some varieties . The most commonly applied insemination Thoroughbred breed of horses , Arabians and large Žemaitukai mares inseminated at all , and not every year. Hanoverian mare always just mated