The effect of liposomal feed additives on the provision of vitamin A and carotene in cows

Abstract

In conditions of industrial milk production, it is important to provide livestock with complete  feed,  including  all  the  necessary nutrients  to  meet  the  needs  of  a  lactating cow. Active metabolic processes and intense activity of the cow’s entire body during lactation  are  a  prerequisite  for  increasing  its need  for  vitamins.  Currently,  various  feed additives and premixes are used in feeding dairy cows, enriching the animals’ diet with essential vitamins, but their productive effect is  contradictory.  The  conducted  studies  established the positive effect of the liposomal additive “LipoCar” on meeting the need for β-carotene  and  vitamin  A  in  the  body  of cows  during  lactation.  Introduction  of  the feed additive “LipoCar” into the main diet in the amount of 6 g/cow/day. helps normalize the  vitamin  nutrition  of  cows,  especially during the transit period. This is confirmed by the results of studies of the blood serum of cows before and after the use of the LipoCar feed additive. In the control group, the content of vitamin A in the blood serum of cows was 2.4 times higher and corresponded to the physiological norm, compared to the control  group,  where  this  indicator  did  not correspond to the norm. There was a positive trend  in  the  content  of  β-carotene  in  the blood  serum  of  cows  in  the  experimental group, with an increase of 4.4 times by the end  of  the  study  compared  to  the  control group. The results obtained allow us to recommend the use of the LipoCar feed additive in the diets of cows from the first day after  calving  in  an  amount  of  6  g/head.  1 time per day for 30 days to normalize metabolism  and  increase  resistance  in  lactating cow.