Producing of ecologically safe food raw materials based on new system of calf rearing

Abstract

AbstractThe productivity and physiological state of young cattle in the post-dairy period were studied. The use of whole milk substitute in feeding calves contributed to the strengthening of metabolic processes in the animal body in the post-dairy period, as evidenced by an increase in the amount of volatile fatty acids in the scar fluid by 6.8%, total nitrogen - by 6.9% with a decrease in ammonia, as well as an increase in the number of red blood cells in the blood by 3.9%, hemoglobin - by 5.4%, glucose - by 5.1%, with an increase in the activity of ALT and AST enzymes by 5.6 and 6.2%. Feeding whole milk substitute and feed to young animals with a duration of the dairy period of 90 days contributes to an increase in average daily gains in the post-dairy period by 5.4%, while reducing the cost of growth by 4.4%, which allowed for an additional profit of 6.64 rubles (2.6 US dollars) per head during the research period.