The experiment on studying the influence of feeding a new feed additive from local mineral natural raw materials on the dynamics of live weight and gains of Romanov sheep yaks in conditions of the State Farm Yakupov D.N. of Birsky district of the Republic of Bashkortostan is carried out. It is established that the use of the additive contributed to the increase in average daily gain by 9.89 %, 14.11 and 24.76 %. At the same time the consumption of feed protein per 1 kg of live weight gain for the whole period of experience decreased by 9.47 %, 11.56 and 19.31 % in comparison with animals from the control group
yarki, feed additive, local mineral raw material, main ration, feed, gain, live weight
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