The efficiency of feeding calves with the energy fodder additive "Zeolfat" in feed composition

The purpose of the research was the effectiveness of feeding energy feed additive (EFA) "ZeolFat" to young cattle. The research objectives were to study chemical composition and nutritional value of EFA "ZeolFat", to develop scientifically based diets for calves, taking into account the introduction of studied feed additive; to determine the effect of EFA "ZeolFat" on physiological state, growth and development of calves; to calculate economic efficiency of the introduction of EFA "ZeolFat" in calves' diets. Scientific and economic experiment of studying the effectiveness of feeding "ZeolFat" was made at mega farm of LLC "Agrocomplex "AK Bars" Arsky district of Tatarstan. The experiment consisted of preparatory (15 days) and research (60 days) periods. For the experiment, the calves of Holstinized black-and-motley breed at the age of 2 months with an average live weight of 80 kg were selected and divided into 3 groups of 10 heads each. All the calves were clinically healthy...