Plant raw materials for correction of reproductive function of cows

The article presents data on the study of effect supplement Lamarin Saldonum reproductive ability highly productive cows. experiment was conducted in APC collective farm "Iskra" (Kotelnichsky district, Kirov region). involved cows a black-and-white Holstein breed aged 2-5 lactation, with milk yield 7,500 kg for 305 days previous completed divided according to principle analogues into experimental groups O1, O2, O3 and control K4 (n=5). additive introduced ration O2 30 before expected date calving 2 months (60 days) daily doses 0.3, 0.4 0.5 g/kg live weight per day respectively. It found that use dietary supplements these does not affect duration pregnancy females timing their arrival hunt after calving. However, it reduces number spermodoses spent fruitful insemination by 7,69; 46,15 (p?0,01) 23,08 % (p?0,05), from 19, 65 (p?0,01), 38,24 (p?0,001) 27,27 (p?0,001), period infertility 32,81 63,84 45,54 respectively relative group (intact animals). According studies, most optimal dose correcting function is an 0,4 g 1 weight.